A mobile network is a radio system that allows multiple mobile devices to communicate with each other. Wi-Fi is a technology that provides wireless communication for transmitting data over close distances between different devices

One of the most stylish new products of 2015 is Xiaomi Redmi 2. Reviews about this amazing device, it technical specifications and possibilities, as well as its pros and cons will be discussed in detail below.

Device positioning

One of the best smartphones entry level today can rightfully be considered “Xiomi Redmi 2”. This device has everything you need for convenient and comfortable work: a small display diagonal of 4.7 inches by today’s standards, a 4-core performance chip, sufficient quantity built-in and RAM. It is also worth noting that there is a more advanced version of this gadget - Xiaomi Redmi 2 Pro. Reviews indicate more high level its performance, which is ensured by a larger built-in storage capacity and twice the amount of RAM. Otherwise these are identical devices. It is worth noting the different color options for the device’s body. Besides the typical white and black, there are also pink, green and yellow. It is this nuance that allows us to accurately determine potential buyers of this apparatus - youth. After all, it is in this way that she tries to express her individuality.

Gadget kit

The equipment in the Xiaomi Redmi 2 is typical, as for most devices from this manufacturer. Reviews indicate this once again. Its boxed version includes:

  • The smartphone itself.
  • Rechargeable battery 2200 mAh.
  • Charger with an output current of 1A.
  • and instruction manual.

In some cases, this device is additionally equipped with an adapter for domestic sockets. But the previously mentioned list clearly lacks a cover and protective film for the front panel. The body, as noted earlier, of this smartphone is made of plastic; you simply cannot do without these accessories when using it. Also, an additional memory card will not be superfluous, which, like a case with film, will have to be purchased additionally. In addition to this, you will also need to purchase a stereo headset.

Design

The two generations of this smartphone have a lot in common. On the front panel there is a screen with a diagonal of 4.7 inches. Sensors are located above the display, speaker and Below the screen there is a familiar control panel of three standard touch buttons. On the bottom side of the device there is a hole for a spoken microphone and a microUSB port. On the contrary, on its upper edge, there is a 3.5 mm audio port. On right side The device contains buttons for regulating the volume of the gadget and locking it. But on the left edge there are no communication or control elements. The front panel of any device in this series has only one color - black. But the back cover, as noted earlier, can be white, black, green, yellow or pink. This design solution is similar to this smart phone from iPhone 5c. So the Xiaomi Redmi 2 Black has a very practical option for the back cover. Reviews from its owners indicate that dirt, fingerprints and scratches are not too noticeable on it. But the female half of humanity will prefer the Xiaomi Redmi 2 White. Reviews from happy owners are further confirmation of this. The remaining color options (yellow, green and pink) will be optimal choice for youth. On the back of the device there is a peephole for the main camera, an LED backlight for it and a main loud speaker.

CPU

As in the Xiaomi Hongmi 2 and Redmi 2 smartphones, reviews of this feature of this device quite often indicate that the same chip is installed - Snapdragon 410 from Qualcom. Its second name is MSM8916. It has 4 computing modules based on the Cortex A53 architecture, which is quite progressive at the moment. At maximum load, they can deliver 1.2 GHz each. Again, this CPU will handle most tasks without issue. The only thing he definitely can’t do is the most demanding toys latest generation. But in this case, you need to look towards devices costing $300 or more. And this is a completely different price category.

Screen and graphics subsystem

The display diagonal in this gadget is 4.7 inches. It is based on the currently most popular technology for manufacturing matrices for screens - “IPS”. Its color rendition is excellent, and viewing angles are close to 180 degrees. The display resolution is 1280x720. That is, the image on it is displayed in HD quality. The basis of the graphics subsystem of this device is the Adreno 306 video accelerator. It cannot boast an impressive level of performance, but it is perfect for solving most everyday tasks. Also, entry-level and intermediate-level toys will run on this graphic solution without any problems. But the most demanding games of the latest generation should not be run on this gadget: the performance is definitely not enough.

Cameras, photo shooting and video recording

The main camera in this device is based on an 8MP sensor. It also includes important technologies such as autofocus, digital zoom and face recognition. The developers did not forget about LED backlighting. The quality of photos obtained with its help is simply excellent for such a device. This camera can shoot video in 1080p format. In this case, the image refresh rate will be 30 frames per second. The front camera sensor is more modest - 2 megapixels. But this is quite enough for selfies and making video calls. It should also be noted that the front camera can record video in 720p format.

Memory

IN basic configuration this phone equipped with only 1 GB of RAM. At the same time, only 300MB is allocated for the user’s needs. The capacity of the built-in storage is 8 GB. It is divided as follows: 3 GB - system software, 2 GB - internal memory for installing application software, 3 GB are reserved for the user's personal data. This is clearly not enough for comfortable work. Therefore, when purchasing such a device, the potential owner will also have to purchase an external flash card for an additional fee. Its maximum capacity in this case can be 32 GB. But there is also a more advanced modification of this smartphone - Xiaomi Redmi 2 Enhanced Edition. Reviews highlight its memory subsystem. The RAM capacity of the gadget has been doubled and is already 2 GB. That is, not 300 MB, but 1300 MB are allocated for the user’s needs. Accordingly, more applications can be run simultaneously on such a phone. The capacity of the built-in storage has been increased to 16 GB, and the user in this situation can count on 11 GB for personal data. To top it all off, this device has exactly the same expansion slot as the “younger” model, and a 32 GB memory card can be installed in it.

Battery

The Xiaomi Redmi 2 phone boasts good autonomy. Reviews speak of a reliable 2-3 days of operation on a single battery charge at an average load level. If you run the most demanding applications on this device, you can count on 1 day of battery life. Well, in case of maximum battery saving, you can last 5 days. The battery in this device is removable, its capacity is 2200 mAh (200 mAh more than the previous generation model). It charges from the included charger in just over 2 hours.

Exchange of information

IN this device Support for all major data exchange interfaces has been implemented. Among wireless methods transmission of information, the following can be distinguished:

  • Supports all currently existing mobile networks: GSM, 3G and LTE. In the first case, the data transfer speed can reach 500 kb/s - this is only enough to load small sites and communicate on social networks. But in the case of 3G or LTE, files of any size or demanding Internet portals will be loaded quite quickly.
  • To navigate using this phone, it is best to use GPS. It has a corresponding transmitter. Support is also provided at the software level domestic system"GLONASS". There is also A-GPS system, which uses towers to determine the location of the smartphone mobile communications.
  • The device is equipped with a Wi-Fi transmitter, which allows you to download files of any size in a matter of minutes.
  • There is also Bluetooth, which allows you to connect wireless headphones to the gadget or exchange small files with similar devices.
  • A standard microUSB port is used to charge the battery and connect to the computer.
  • A 3.5 mm audio port is provided for connecting wired headphones.

Software

"Android" with serial number 4.4 is system software, on the basis of which the Xiaomi Redmi 2 smartphone operates. Reviews highlight its stable and reliable operation. The manufacturer's proprietary shell, MIUI version 6, is installed on top of the operating system. The interface of this software system simple and intuitive. Therefore, dealing with it will not be difficult. The rest of the software set is standard: social mini-programs (Facebook, Twitter and, of course, Google+), operating system add-ons (calculator, organizer, calendar, etc.) and a set of utilities from Google. (browser, Google News, etc.). The new owner of this device will have to additionally install all other application software from the Play Store application store.

Current cost of the device

It is the excellent ratio of low cost and excellent technical characteristics that is strong point of this manufacturer. This smartphone model was no exception in this regard. At $130 today the most valued affordable option this gadget is Xiaomi Redmi 2 8Gb. Reviews highlight a more advanced modification of the device with the “Pro” prefix. It is priced at $195. But at the same time, it has doubled the capacity of the built-in storage and RAM.

We are all used to Xiaomi making smartphones of excellent quality and functionality. Moreover, they also cost significantly less than their competitors. And then the extremely strange Xiaomi Redmi S2 comes onto the scene. Boring design, plastic body, outdated characteristics, but they ask for it like a modern device like a . What's the catch? Let's understand Xiaomi review Redmi S2.

Equipment

Boring and ordinary. There is a box with a piece of paper inside English, because the global version has been on sale for a long time. Nearby is a 2 amp power supply and cable Micro USB. The latter, of course, is extremely bad. In 2018, in a new smartphone that does not cost $50, Xiaomi continues to install Micro USB. How long will this continue?!


Design

There are a lot of strange things in the appearance of Xiaomi Redmi S2. Let's go in order.

The first is the plastic case. Xiaomi and other Chinese manufacturers have long taught us that if a smartphone is cheap, it can and should still be clad in metal. Only the most affordable devices have plastic in the case. A striking example— . A good device in plastic for less than 100 bucks and therefore it can be forgiven.

The Xiaomi Redmi S2 costs an average of $150, exactly the same as the S, but the S2 has an entirely plastic body. How so?

And it would be nice if it were some interestingly played material like Soft Touch or something similar. No, it's very cheap and simple plastic.

This Redmi Note 5A

Second. Xiaomi tends to stick to its design path. Only in the highest segment does it allow itself to brazenly copy competitors, as was the case with and. Even the wallpaper was almost identical. This is hilarious!

More affordable mi devices always have their own face and, as a rule, they copy them, and not Xiaomi.

In our case, everything happened the other way around. On the back of the case we have an imitation of thin strips of antennas. Why are they here? After all, the case is plastic, the signal passes through it just fine! And secondly, this step repeats the design of smartphones - admittedly, it is far from the most successful design.


Third. The front is completely flat. safety glass. Yes, it has an oleophobic coating, but why is it flat? After all, the manufacturer switched to 2.5D glass a long time ago, and here you have a surprise! The same as in the state employee. And again, this is forgivable for him, because it costs $90. But more expensive device Looks like our S2 is no longer there.

Fourth. I can assume that they protrude into the cameras because high-quality and advanced modules are installed there. We can come to terms with this, because in contrast to us it is proposed high quality photo at the exit.

What is offered to us in Redmi S2? Just a protruding camera in style without any pretensions to the highest level of photography. This element literally screams: “Hey! Look! I don’t have money for this, but I have bad taste and a passion to imitate!” Well, how is this possible?!

Convenience

Xiaomi RS2 is a hefty smartphone. If you can’t tell this from the pictures on the Internet, then in person, believe me, this is the same shovel.

In addition, the device has very wide frames: both on the sides, top and bottom.

Yes, the screen here is also rather large, which is, of course, convenient, but coupled with the wide frames, the result is far from the most user-friendly smartphone on the market.

One more moment. The system supports gesture control. Great stuff! It works accurately, without errors, and getting used to it takes a minimum of time.

There’s just one problem: a normal swipe from the edge of the screen is hampered by the plastic edge on the body. Of course, he doesn’t protrude much, but it’s enough to cause inconvenience. You can, of course, get used to it, but it would be convenient to move your finger along the curved glass at the edges.

Otherwise there are no problems. Calm, discreet, utilitarian smartphone.

Display

Unfortunately, it’s hardly possible to say anything positive about the screen. Except that it’s big and there’s a lot of useful information in there.

The Xiaomi RS2 display has two big problems: low resolution and poor color reproduction.

Still, a resolution of 1440 by 720 pixels on 6 inches is no longer enough. The same one has a slightly smaller matrix (5.7 inches) and this resolution is generally sufficient. Not here. The fonts look loose and it’s not difficult to make out individual pixels.

  • Xiaomi Redmi 5 – pixel density 282 ppi
  • Xiaomi Redmi S2 – 269 ppi
  • Xiaomi Redmi 5 Plus – 403 ppi

The difference is only 13 points, but believe me, this is very noticeable in real use.

The second problem is poor color rendering. All colors, no matter how bright they were initially, look faded on the RS2's display, as if they were bleached by the sun. Adjusting the contrast from the menu does not help. The maximum that can be done there is to increase the temperature of the colors to warmer or cooler shades.

Lets down and automatic adjustment brightness It always lowers the backlight, so you often have to turn it up to a more comfortable level.

However, the minimum brightness level of 1 nit is, of course, a cool feature of all latest devices from Xiaomi. It helps a lot when reading at night. At least something!

Characteristics of Xiaomi Redmi S2

  • Qualcomm Snapdragon 625 platform (eight Cortex A53 cores with a frequency of 2.0 GHz, 14 nm)
  • video accelerator Adreno 506
  • RAM 3 (1.5 GB available after reboot) or 4 GB
  • physical memory 32 (23 GB free on a clean device) or 64 GB
  • Micro SD cards supported (independent slot allocated)
  • IPS screen 5.99’’, 1440 x 720 pixels (18:9, density 269 ppi, contrast 1000 to 1, brightness 450 nits, 70.8% NTSC palette support)
  • 16 MP front camera (S5K3P8SP sensor, f/2.0 aperture)
  • two rear cameras: 12 MP (1/2.9’’ Sony IMX486 matrix, pixel size 1.25 microns, f/2.2, PDAF focusing, Full HD video recording) and 5 MP (S5K5E8 sensors)
  • 3080 mAh battery (no fast charging)
  • OS Android 8.1.0
  • MIUI 9.5 shell (global firmware available)
  • Sensors:: G-sensor, lighting, distance, gyroscope, fingerprint scanner, e-compass, LED LED indicator(one color - white)
  • networks: 2G, 3G, 4G (LTE bands: 1, 3, 5, 7, 8, 34, 38, 39, 40, 41), 2x Nano SIM cards
  • Wi-Fi (802.11 b, g, n), Bluetooth 4.2, IR port
  • geolocation: GPS, Glonass, Beidou
  • connectors: Micro USB ( OTG protocol works), 3.5 mm headphone output
  • dimensions: 160.7 × 77.3 × 8.1 mm, weight 170 grams
  • colors: black-gray, white-gold, white-pink

The biggest enemy of our device is, which costs the same or a little more, but offers much more interesting characteristics. In his review you can easily verify this.

But for independent slots for SIM cards and external memory The company needs to be thanked. Now you don't have to choose between additional memory and another SIM card.

Performance

The Qualcomm Snapdragon 625 processor, coupled with an HD screen, should provide excellent performance even today, in 2018. However, it’s impossible to call a smartphone fast.

The device likes to think, albeit for a short time, but still.

In addition, it slows down periodically. Either when opening an application, or when scrolling through lists, freezes on the Redmi S2, unfortunately, happen often.

Perhaps the firmware will improve performance, but maybe not. It depends on your luck, because Xiaomi has a very wide range of smartphones. Who knows whether programmers will have enough time and effort for all devices and whether S2 has at least some priority.

You can play games on Xiaomi RS2. World of Tanks Blitz launches without problems on maximum settings graphics. At the same time, the frame rate varies between 30-60 FPS depending on the complexity of the scenes. In any case, you can play comfortably. Doesn't save high resolution screen, which does not load the processor as much as Full HD.

Cameras

Our main camera is 12 megapixels - Sony sensor IMX486. If anything, exactly the same matrix is ​​installed as the main peephole in . And judging by the quality of the photos it produces, the Indians are out of luck.

A few weeks ago I tested Xiaomi Redmi Note 5 (Pro) for the Chinese market and the camera there simply amazed me with its quality (S5K2I7 module). The smartphone costs 200 bucks, and its sensor is from a 350-dollar device at least.

In our case, they ask for 150 bucks for the device and the camera fully corresponds to this price list. Here are some sample photos from the Xiaomi Redmi S2 camera.

We grab originals without resize.

Affordable Xiaomi smartphones have one problem - white balance. You point the sensor at a blade of grass, focus, and the output is either too light with cold colors, or too dark with an overabundance of warm colors.


HDR works, but not too well. Yes, dark areas are slightly highlighted, the sky shows itself in the clouds, but the photo’s white balance again suffers. It also takes 1-2 seconds to take each HDR photo, so keep your hands straight and be patient.

Portrait mode works surprisingly well. The algorithm cuts off the contours of the object in the foreground softly, which is good. Yes, mistakes happen - sometimes the system does not understand where the object is and where the background is. However, for a smartphone for that kind of money, this is still very cool.


Video recording

The smartphone can please you with Full HD video recording at 30 frames per second. Despite the fact that the QS 625 chipset is capable of recording 4K, Xiaomi decided not to add this feature. Really, why do we need it in 2018?

The manufacturer generally does not pay enough attention to video recording in its products. For example, I recently scored 105 points in the DxOMark photo test - higher than and. And in the video part, it received only 88 points - a little more than that released more than two years ago.

In any case, FHD videos look good. Yes, the dynamic range suffers (either the sky is too light or the horizon is too dark), but we must give it its due great job stabilization and detailing of the picture as a whole.

I was very pleased that the developers finally dealt with their nasty and gurgling noise reduction, which spoiled the sound recording during video shooting. A long-standing problem that has finally been resolved in the RS2. Pah-pah, so as not to jinx it.

Front camera

The 16 megapixel front camera is represented by the S5K3P8S module. For simple selfies, it will do from time to time. For glamorous pussies and their 100,000-strong Instagrams, of course not.

Sound

The sound in the Xiaomi RS2 headphones is shameless. It doesn’t strike the imagination, of course, but for 90% of users it will do just fine.

One speaker located on the bottom edge is responsible for external sounds. It's average in quality, and not so great in volume either. It could be better, but in this price category there are often smartphones that play noticeably worse.

Autonomy

Well, the battery life of the RS2 will be the envy of anyone modern smartphone. Well, except perhaps.

So, our hero works quietly on one charge for two full days.

And the screen operating time will be 5-6 hours. At the same time, I used almost all components of the phone with the exception of games - I spent about 20 minutes on “Tanks”, so we won’t count them.

Under the hood they placed a battery for only 3 thousand “machs”. It’s scary to imagine how long a device would work on a 4 thousand mAh battery. But here everything is fine.

There is no fast charging, because 5 volts and 2 amperes at the output is no longer considered such.

Bottom line

Before making a final conclusion, let's look again at all the positive and negative aspects of the device.

Pros:

  • big screen
  • fast and stable MIUI (opportunity to test MIUI 10)
  • Confident gaming performance
  • Micro SD slot separate from two Nano SIM cards
  • two rear cameras -> yes portrait mode(bokeh)
  • great autonomy
  • high-quality FHD video recording

Cons:

  • plastic case
  • strange design (strips of “antennas” and protruding camera)
  • flat glass front
  • inconvenient gesture control (blame the side)
  • HD display resolution
  • poor color rendering and display contrast
  • animation brakes
  • Poor photo quality overall
  • lack of USB Type-C

In short, the Xiaomi Redmi S2 is the same, only with a more powerful processor and two cameras on the rear panel, that is, with a working portrait mode. And we pay the difference in price between these two devices (about 50-60 dollars) precisely for these two parameters.

If you give preference (same prices), then you will lose the portrait mode, but you will gain a more elegant design, metal in the body and a slightly better color rendering screen.

My Xiaomi Redmi S2 arrived from the Gearbest online store. Here is the link to check the current price. By the way, buying a Xiaomi Redmi S2 in this place will result in it being pre-installed at the factory global firmware and a box with instructions in English. After all, the international version of the smartphone has been on sale for a long time.

Get cashback

Xiaomi Redmi S2 is the first smartphone that opens the new budget line of the S series. According to official data, all devices in this series are focused on creating high-quality selfie shots with AI support and will be sold at a low price.

A logical question arises: how much of the Redmi S2's specifications and features were sacrificed for great photos? I've gone into more detail into every aspect of this. Xiaomi phone to save you a lot of questions.

Technical specifications of Xiaomi Redmi S2

5.99-inch IPS, 1440x720 (18:9, 269 ppi density, 1000:1 contrast ratio, 450 nits brightness.

CPU

Qualcomm Snapdragon 625 (eight Cortex A53 cores @ 2.0 GHz, 14 nm).

3 or 4 GB.

32 or 64 GB.

Android 8.1 Oreo with MIUI 9.5 shell.

SIM support

2x Nano SIM cards.

Micro USB (OTG support), 3.5 mm audio jack.

Network support

2G (GSM): 850 / 900 / 1800 / 1900 MHz.

3G (WCDMA): 850 / 900 / 1900 / 2100 MHz.

4G (LTE bands: 1, 3, 5, 7, 8, 34, 38, 39, 40, 41).

Rear – 12 MP (Sony IMX486 sensor) and 5 MP (S5K5E8 sensor), LED flash.

Front – 16 MP (S5K3P8SP sensor), LED flash.

Built-in speaker, noise canceling and conversation microphone.

Wireless interfaces

WiFi 802.11 b/g/n and Bluetooth 4.2 A2DP.

Expansion slots

MicroSD (independent slot).

Navigation

GPS, A-GPS, Beidou and GLONASS.

Proximity, lighting, gyroscope, accelerometer and compass.

Safety

Fingerprint scanner.

Non-removable 3080 mAh.

Dimensions

160.7×72.3×8.1 mm.

Available colors

Pink, gold and grey.

Redmi S2 design

The Xiaomi Redmi S2 phone is not a premium or high-end gadget, so its design does not stand out from the crowd. The build quality is not bad, there is no play or creaking, however, the budget is evident in everything.

The back cover is plastic and has fake antenna lines for beauty. However, the smartphone looks and feels good, and its appearance corresponds to all modern trends.

The side frames of the screen are small, but the top and bottom are quite noticeable even despite the absence of touch buttons (here they are on-screen). Most likely, this was done in order to save money. The screen has an aspect ratio of 18:9, and the absence of a 2.5D effect at the edges will allow you to stick a good protective glass.

On the right side of the gadget there is a volume rocker and a power button. On the opposite side there is a SIM card tray with a separate slot for memory cards. You no longer have to sacrifice a SIM card to increase internal memory.

At the top end of the Redmi S2 there is a 3.5 mm headphone jack, an infrared sensor and a microphone for noise reduction. On the bottom, there is a conversational microphone, speaker and micro USB port. Xiaomi still uses the older connectivity standard on its budget smartphones.

On the back panel there is a vertical module with two cameras and a flash. Just below which is a fingerprint scanner and the company logo. Above the display there is a standard set of sensors and an earpiece.

The Redmi S2 smartphone from Xiaomi is available in three colors - pink, gold and gray.

Phone screen

The Xiaomi Redmi S2 screen matches it well price range. This is a 5.99-inch IPS LCD panel made of low temperature PolySilicon. The resolution here is HD + 1440×720, and the pixel density is 269 ppi. The color depth of the display is 24 bits, which gives approximately 16 million colors.

Although the viewing experience is not the best, the screen performs its functions 100% and does not have annoying black stripes on the sides. You need to be a real expert to find specific flaws in this display. I am sure that the average user will be quite satisfied with the panel of the new Redmi S2.

Equipment and performance

Xiaomi Redmi S2 is equipped with a 64-bit octa-core Qualcomm Snapdragon 625 (MSM8953) processor clocked at 2.0 GHz. This processor is designed for the mid-to-low segment, so don't expect anything extraordinary from its performance. When switching between applications that have animations, slight delays are noticeable. Otherwise, the phone works well and handles everyday tasks without any problems.

The Adreno 506 video chip is responsible for graphics processing here. The Redmi S2 phone comes with 3 GB or 4 GB of LPDDR3 RAM with a frequency of 930 MHz. Internal memory also varies between 32GB and 64GB. For a 2018 gadget, this amount of internal memory is not always enough, so the device comes with a dedicated slot for microSD cards.

In the AnTuTu test, Xiaomi Redmi S2 showed only 68,913 points. The result is quite low compared to other competitors.

Software

The Xiaomi Redmi S2 smartphone comes with MIUI 9.5 shell, which runs on Android 8.1 Oreo OS. MIUI combines best qualities everyone user interfaces and introduces several new, original features.

For example, “Second Space” allows you to run one application with different credentials. This is useful for those who use more than one account on social networks.

Additionally, MIUI offers the option to replace traditional Android buttons like Back, Home and Apps with gesture controls.

Redmi S2 comes with Google services pre-installed, so you don't need to go through the manual installation process. The global version of the S2 firmware has multiple languages ​​and can be used in almost any part of the world.

Connectivity

The budget Xiaomi Redmi S2 has a standard set of sensors, such as proximity, lighting, gyroscope, accelerometer and compass. The fingerprint scanner consists of FPC1028, so it works very quickly and accurately.

GPS, A-GPS, Beidou and GLONASS are responsible for navigation here. The phone supports 2G, 3G and 4G LTE networks. There is also WiFi 802.11 b/g/n with support for WiFi Direct, Display, Hotspot and Bluetooth 4.2 A2DP. Micro port USB 2.0 has OTG support.

Redmi S2 is one of the few budget smartphones that comes with AI unlocking feature. It's nice to have this feature without having a high-end smartphone.

Battery and autonomy

This gadget is equipped with a lithium polymer non-removable battery 3080 mAh, the charge of which is enough for the whole day. With an average load, it can be stretched for a day and a half.

Thanks to the energy-efficient processor, we get good battery life, which is longer than most smartphones with a 5.7-inch screen diagonal. The package includes charger 5V/2A.

Cameras Xiaomi Redmi S2

The most attractive part of this smartphone is the cameras. The dual rear camera of Xiaomi Redmi S2 consists of sensors - 12.0 MP Sony IMX486 Exmor RS with f/2.2 aperture and 5.0 MP Samsung S5K5E8 with a pixel size of 1.12 microns. An LED flash is installed between the lenses.

The main camera of Redmi S2 is capable of capturing photos with a resolution of 4000×3000 and videos of 1920×1080 pixels at 30 frames per second. The AI ​​feature provides better focusing and is especially useful in portrait mode.

The 16-megapixel front camera supports beauty modes, facial recognition using AI, allows you to create high-quality high-resolution selfies even in low light conditions. It is equipped with a 1/3.1″ Samsung S5K3P8SP sensor with f/2.2 aperture, 3.52 mm focal length and LED flash. This allows you to take photos at a resolution of 4608x3456 and shoot videos at 1920x1080 at 30 frames per second.

Bottom line

Xiaomi Redmi S2 is not premium smartphone however, it offers high quality images at a low price. Without spending a lot of money, you get a great smartphone with excellent cameras that you won't find on other devices in this price range.

The design here corresponds to all modern trends, and the large screen, together with an energy-efficient processor, makes the Redmi S2 an excellent companion in everyday life.

Xiaomi Redmi S2 phone review - video

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Information about the make, model, and alternative names of the specific device, if available.

Design

Information about the dimensions and weight of the device, presented in different units of measurement. Materials used, colors offered, certificates.

Width

Width information - refers to the horizontal side of the device in its standard orientation during use.

67.2 mm (millimeters)
6.72 cm (centimeters)
0.22 ft (feet)
2.65 in (inches)
Height

Height information - refers to the vertical side of the device in its standard orientation during use.

134 mm (millimeters)
13.4 cm (centimeters)
0.44 ft (feet)
5.28 in (inches)
Thickness

Information about the thickness of the device in different units measurements.

9.4 mm (millimeters)
0.94 cm (centimeters)
0.03 ft (feet)
0.37 in (inches)
Weight

Information about the weight of the device in different units of measurement.

133 g (grams)
0.29 lbs
4.69 oz (ounces)
Volume

The approximate volume of the device, calculated based on the dimensions provided by the manufacturer. Refers to devices with the shape of a rectangular parallelepiped.

84.65 cm³ (cubic centimeters)
5.14 in³ (cubic inches)
Colors

Information about the colors in which this device is offered for sale.

White
Yellow
Green
Pink
Grey
Materials for making the case

Materials used to make the device body.

Plastic

SIM card

The SIM card is used in mobile devices to store data that certifies the authenticity of mobile service subscribers.

Mobile networks

A mobile network is a radio system that allows multiple mobile devices to communicate with each other.

GSM

GSM (Global System for Mobile Communications) is designed to replace the analogue mobile network (1G). For this reason, GSM is often called a 2G mobile network. It is improved by the addition of GPRS (General Packet Radio Services), and later EDGE (Enhanced Data rates for GSM Evolution) technologies.

GSM 900 MHz
GSM 1800 MHz
GSM 1900 MHz
CDMA2000

CDMA2000 is a group of 3G mobile network standards based on CDMA. Their benefits include more powerful signal, less interruptions and network breaks, support analog signal, wide spectral coverage, etc.

1xEV-DO Rev. A
TD-SCDMA

TD-SCDMA (Time Division Synchronous Code Division Multiple Access) is a 3G mobile network standard. It is also called UTRA/UMTS-TDD LCR. It is designed as an alternative W-CDMA standard in China by the Chinese Academy of Telecommunications Technology, Datang Telecom and Siemens. TD-SCDMA combines TDMA and CDMA.

TD-SCDMA 1900 MHz
TD-SCDMA 2000 MHz
UMTS

UMTS is an abbreviation for Universal Mobile Telecommunications System. It is based on GSM standard and applies to 3G mobile networks. Developed by 3GPP and its most big advantage is providing higher speed and spectral efficiency thanks to W-CDMA technology.

UMTS 850 MHz
UMTS 1900 MHz
UMTS 2100 MHz
UMTS 900 MHz (Redmi 2 Prime)
LTE

LTE (Long Term Evolution) is defined as a technology fourth generation(4G). It is developed by 3GPP based on GSM/EDGE and UMTS/HSPA to increase the capacity and speed of wireless mobile networks. The subsequent technology development is called LTE Advanced.

LTE 2100 MHz
LTE 2600 MHz
LTE-TDD 1900 MHz (B39)
LTE-TDD 2500 MHz (B41)
LTE-TDD 2600 MHz (B38)
LTE 1800 MHz (Redmi 2 Prime)
LTE-TDD 2300 MHz (B40) (Redmi 2 Prime)

Mobile communication technologies and data transfer speeds

Communication between devices on mobile networks is carried out using technologies that provide different data transfer rates.

Operating system

An operating system is a system software that manages and coordinates the operation of hardware components in a device.

SoC (System on Chip)

A system on a chip (SoC) includes all the most important hardware components of a mobile device on one chip.

SoC (System on Chip)

A system on a chip (SoC) integrates various hardware components, such as a processor, graphics processor, memory, peripherals, interfaces, etc., as well as the software necessary for their operation.

Qualcomm Snapdragon 410 MSM8916
Process

Information about the technological process by which the chip is manufactured. Nanometers measure half the distance between elements in the processor.

28 nm (nanometers)
Processor (CPU)

The primary function of a mobile device's processor (CPU) is to interpret and execute instructions contained in software applications.

ARM Cortex-A53
Processor size

The size (in bits) of a processor is determined by the size (in bits) of the registers, address buses, and data buses. 64-bit processors have higher performance compared to 32-bit processors, which in turn are more powerful than 16-bit processors.

64 bit
Instruction Set Architecture

Instructions are commands with which the software sets/controls the operation of the processor. Information about the instruction set (ISA) that the processor can execute.

ARMv8
Level 0 cache (L0)

Some processors have L0 (level 0) cache, which is faster to access than L1, L2, L3, etc. The advantage of having such memory is not only more high performance, but also reducing energy consumption.

4 kB + 4 kB (kilobytes)
Level 1 cache (L1)

Cache memory is used by the processor to reduce access time to more frequently used data and instructions. L1 (level 1) cache is small in size and works much faster as system memory, and other levels of cache memory. If the processor does not find the requested data in L1, it continues to look for it in the L2 cache. On some processors, this search is performed simultaneously in L1 and L2.

16 kB + 16 kB (kilobytes)
Level 2 cache (L2)

L2 (level 2) cache is slower than L1 cache, but in return it has a higher capacity, allowing it to cache more data. It, like L1, is much faster than system memory (RAM). If the processor does not find the requested data in L2, it continues to look for it in the L3 cache (if available) or in RAM memory.

2048 kB (kilobytes)
2 MB (megabytes)
Number of processor cores

The processor core executes software instructions. There are processors with one, two or more cores. Having more cores increases performance by allowing multiple instructions to be executed in parallel.

4
CPU clock speed

The clock speed of a processor describes its speed in terms of cycles per second. It is measured in megahertz (MHz) or gigahertz (GHz).

1200 MHz (megahertz)
Graphics Processing Unit (GPU)

The Graphics Processing Unit (GPU) handles calculations for various 2D/3D graphics applications. In mobile devices, it is most often used by games, consumer interfaces, video applications, etc.

Qualcomm Adreno 306
GPU clock speed

Running speed is the clock speed of the GPU, measured in megahertz (MHz) or gigahertz (GHz).

400 MHz (megahertz)
Amount of random access memory (RAM)

Random access memory (RAM) is used by the operating system and all installed applications. Data stored in RAM is lost after the device is turned off or restarted.

1 GB (gigabytes)
2 GB (gigabytes)
Type of random access memory (RAM)

Information about the type of random access memory (RAM) used by the device.

LPDDR3
Number of RAM channels

Information about the number of RAM channels that are integrated into the SoC. More channels mean higher data rates.

Single channel
RAM frequency

The frequency of RAM determines its operating speed, more specifically, the speed of reading/writing data.

533 MHz (megahertz)

Built-in memory

Each mobile device has built-in (non-removable) memory with a fixed capacity.

Memory cards

Memory cards are used in mobile devices to increase the storage capacity for storing data.

Screen

The screen of a mobile device is characterized by its technology, resolution, pixel density, diagonal length, color depth, etc.

Type/technology

One of the main characteristics of the screen is the technology by which it is made and on which the quality of the information image directly depends.

IPS
Diagonal

For mobile devices, screen size is expressed by the length of its diagonal, measured in inches.

4.7 in (inches)
119.38 mm (millimeters)
11.94 cm (centimeters)
Width

Approximate screen width

2.3 in (inches)
58.53 mm (millimeters)
5.85 cm (centimeters)
Height

Approximate screen height

4.1 in (inches)
104.05 mm (millimeters)
10.4 cm (centimeters)
Aspect Ratio

The ratio of the dimensions of the long side of the screen to its short side

1.778:1
16:9
Permission

Screen resolution shows the number of pixels vertically and horizontally on the screen. Higher resolution means clearer image detail.

720 x 1280 pixels
Pixel Density

Information about the number of pixels per centimeter or inch of the screen. More high density Allows you to display information on the screen with clearer details.

312 ppi (pixels per inch)
122ppcm (pixels per centimeter)
Color depth

Screen color depth reflects the total number of bits used for color components in one pixel. Information about the maximum number of colors that the screen can display.

24 bit
16777216 flowers
Screen area

Approximate percentage of screen area occupied by the screen on the front of the device.

67.85% (percent)
Other characteristics

Information about other screen features and characteristics.

Capacitive
Multi-touch
Scratch resistance
Dragontrail glass

Sensors

Different sensors perform different quantitative measurements and convert physical indicators into signals that a mobile device can recognize.

Main camera

The main camera of a mobile device is usually located on the back of the body and is used for taking photos and videos.

Sensor model

Information about the manufacturer and model of the photo sensor used in the device's camera.

OmniVision OV8825
Sensor type

Digital cameras use photo sensors to take photographs. The sensor, as well as optics, are one of the main factors in the quality of the camera in a mobile device.

CMOS BSI (backside illumination)
Sensor size

Information about the dimensions of the photosensor used in the device. Typically, cameras with larger sensors and lower pixel densities offer higher image quality despite the lower resolution.

4.61 x 3.44 mm (millimeters)
0.23 in (inches)
Pixel size

The smaller pixel size of the photosensor allows more pixels per unit area, thus increasing resolution. On the other side, smaller size pixel may have a negative impact on image quality at high ISO levels.

1.414 µm (micrometers)
0.001414 mm (millimeters)
Crop factor

The crop factor is the ratio between the dimensions of the full-frame sensor (36 x 24 mm, equivalent to a frame of standard 35 mm film) and the dimensions of the device's photosensor. The indicated number represents the ratio of the diagonals of the full-frame sensor (43.3 mm) and the photosensor of a particular device.

7.51
Diaphragm

Aperture (f-number) is the size of the aperture opening that controls the amount of light reaching the photosensor. A lower f-number means the aperture opening is larger.

f/2.2
Focal length

Focal length is the distance in millimeters from the photosensor to the optical center of the lens. The equivalent focal length is also indicated, providing the same field of view with a full frame camera.

3.73 mm (millimeters)
28.01 mm (millimeters) *(35 mm / full frame)
Flash type

The most common types of flashes in mobile device cameras are LED and xenon flashes. LED flashes produce softer light and, unlike brighter xenon flashes, are also used for video shooting.

LED
Image Resolution

One of the main characteristics of mobile device cameras is their resolution, which shows the number of horizontal and vertical pixels in the image.

3264 x 2448 pixels
7.99 MP (megapixels)
Video resolution

Information about the maximum supported resolution when shooting video with the device.

1920 x 1080 pixels
2.07 MP (megapixels)
Video - frame rate/frames per second.

Information about the maximum number of frames per second (fps) supported by the device when shooting video with maximum resolution. Some of the main standard video shooting and playback speeds are 24p, 25p, 30p, 60p.

30fps (frames per second)
Characteristics

Information about other software and hardware features related to the main camera and improving its functionality.

Autofocus
Continuous shooting
Digital zoom
Geographical tags
HDR shooting
Touch Focus
Face recognition
Setting White Balance
ISO Setting
Exposure compensation
Scene Selection Mode
5-element lens

Additional camera

Additional cameras are usually mounted above the device screen and are used mainly for video conversations, gesture recognition, etc.

Audio

Information about the type of speakers and audio technologies supported by the device.

Radio

The radio of the mobile device is a built-in FM receiver.

Location determination

Information about the navigation and location technologies supported by your device.

WiFi

Wi-Fi is a technology that provides wireless communication for transmitting data over close distances between various devices.

Bluetooth

Bluetooth is a standard for secure wireless data transfer between various devices of different types over short distances.

USB

USB (Universal Serial Bus) is an industry standard that allows different electronic devices to exchange data.

Headphone jack

This is an audio connector, also called an audio jack. The most widely used standard in mobile devices is the 3.5mm headphone jack.

Connecting devices

Information about other important connection technologies supported by your device.

Browser

A web browser is a software application for accessing and viewing information on the Internet.

Video file formats/codecs

Mobile devices support different video file formats and codecs, which respectively store and encode/decode digital video data.

Battery

Mobile device batteries differ from each other in their capacity and technology. They provide the electrical charge necessary for their functioning.

Capacity

Battery capacity shows maximum charge, which it is capable of storing, measured in milliamp-hours.

2200 mAh (milliamp-hours)
Type

The type of battery is determined by its structure and, more precisely, the chemicals used. There are different types batteries, with lithium-ion and lithium-ion polymer batteries most often used in mobile devices.

Li-Ion (Lithium-ion)
Fast charging technology

Fast charging technologies differ from each other in terms of energy efficiency, supported output power, control of the charging process, temperature, etc. The device, battery and charger must be compatible with fast charging technology.

Qualcomm Quick Charge 1.0
Characteristics

Information about some additional characteristics of the device's battery.

Fast charging
Removable

Specific Absorption Rate (SAR)

The SAR level refers to the amount of electromagnetic radiation absorbed by the human body while using a mobile device.

SAR level for head (EU)

The SAR level indicates the maximum amount electromagnetic radiation to which the human body is exposed when holding a mobile device next to the ear in a conversation position. In Europe the maximum valid value SAR for mobile devices is limited to 2 W/kg per 10 grams of human tissue. This standard has been established by CENELEC in accordance with IEC standards, subject to the guidelines of ICNIRP 1998.

0.701 W/kg (Watt per kilogram)
Body SAR level (EU)

The SAR level indicates the maximum amount of electromagnetic radiation to which the human body is exposed when holding a mobile device at hip level. The maximum permissible SAR value for mobile devices in Europe is 2 W/kg per 10 grams of human tissue. This standard has been established by the CENELEC Committee in compliance with the ICNIRP 1998 guidelines and IEC standards.

0.703 W/kg (Watt per kilogram)
Head SAR level (US)

The SAR level indicates the maximum amount of electromagnetic radiation that the human body is exposed to when holding a mobile device near the ear. Maximum value, used in the USA, is 1.6 W/kg per 1 gram of human tissue. Mobile devices in the US are regulated by the CTIA, and the FCC conducts tests and sets their SAR values.

0.999 W/kg (Watt per kilogram)
Body SAR level (US)

The SAR level indicates the maximum amount of electromagnetic radiation to which the human body is exposed when holding a mobile device at hip level. The highest permissible SAR value in the USA is 1.6 W/kg per 1 gram of human tissue. This value is set by the FCC, and the CTIA monitors mobile devices' compliance with this standard.

0.982 W/kg (Watt per kilogram)

Xiaomi Redmi S2 is an affordable smartphone with a dual camera and a frameless design. The device has received support for artificial intelligence to create high-quality photographs. The announcement of the gadget took place in May 2018.

Appearance and ergonomics

Xiaomi Redmi C2 has a spectacular frameless design. The large screen occupies almost the entire front part of the device. At the same time, the manufacturer did not come up with different “eyebrows”, but simply made small indentations below and above. There are no extra buttons under the screen for navigation - now they are virtual. All front panel covers the elegant 2.5D glass that separates the display from the body. It looks stylish and interesting.

At the bottom there are not only stereo speakers, but also a microUSB connector. The right side received a power button and a volume rocker, and left side Has a barely noticeable SIM card slot. Almost the entire back part is made of lightweight and durable aluminum. The lines defining the inserts for the antennas are very original. They are chrome plated and also have an elegant shape. Behind is vertical block with dual camera and flash. Just below is a round fingerprint scanner.

The smartphone fits perfectly in the hand due to its elongated body. It is worth noting the presence of a built-in battery with a capacity of 3080 mAh. Available colors: gold, silver and rose gold. Dimensions: height - 160.7 mm, thickness - 8.1 mm, width - 77.3 mm, weight - 170 g.

Display

Redmi S2 has an IPS screen with a 5.99-inch diagonal and an 18:9 aspect ratio. The resolution of this display is 1440 by 720 pixels. The fairly high brightness level is complemented by extensive color gamut NTSC spaces. The image is moderately detailed and colorful. At the same time, the color gamut is largely oversaturated. It should be noted that the viewing angles are excellent, and colors are not greatly distorted even at severe angles. The side frames here are small, which automatically makes the screen “frameless”. The top of the display is covered with a reliable protective glass with good anti-glare properties.

Hardware and performance

The budget smartphone Redmi C2 has an eight-core (Cortex-A53) Snapdragon 625 MSM8953 processor with a clock frequency of 2000 MHz. Here it is used graphics accelerator Adreno 506. The standard version is equipped with 3 GB of RAM and 32 GB of internal storage. But the advanced modification received 4 GB of RAM and 64 GB of free space for files. The device supports memory cards with a capacity of up to 256 GB. There is a non-removable battery with a capacity of 3080 mAh, the charge of which is enough for a whole day of active use.

In the AnTuTu test, this phone scores about 65,000 points, which is a good indicator for the budget segment. In Geekbench 4 - 850 points in single-core mode and 3500 points in multi-core mode. For games this processor It’s a stretch, since many “heavy” projects are seriously slowed down. But in everyday tasks the gadget works really quickly. It is noteworthy that the device received an operating room Android system 8.1 along with branded shell MIUI 9.5.

Communication and sound

Thanks to the stereo speakers, Xiaomi Redmi S2 sounds very decent. You definitely won't be able to miss a call. Somewhere there is a lack of rich bass, but otherwise the sound is very good. It's nice to listen to music on headphones. It is comfortable to talk with your interlocutors, since the corresponding speaker effectively suppresses extraneous noise. The gadget received Bluetooth 4.2, as well as support for two SIM cards. Moreover, the memory card is placed in a separate slot for convenience. It is worth noting the presence of FM radio and LTE.

Camera

Xiaomi Redmi C2 has a dual camera with flash and phase detection autofocus. The main module with an aperture of 2.2 is 12-megapixel, and the additional one is 5-megapixel. This camera takes excellent pictures in the daytime, but when poor lighting Artifacts and noise are clearly visible.

The manufacturer paid special attention to the 16-megapixel front camera with a separate LED flash and HDR mode. With the help of really large pixels, the front camera captures a lot of light, so high-quality self-portraits will be obtained even indoors. The camera is also helped by artificial intelligence, which is responsible for precise blur. background and overall image improvement. Moreover, the front camera has a facial recognition system to instantly unlock the smartphone.

Conclusions

For its price, Redmi S2 offers a lot of features. This budget smartphone stands out as advanced front camera, very stylish design, pleasant sound, rich display and decent performance. In the low-cost phone segment this model rightfully occupies a very high place.

Pros:

  • Metal body and frameless design.
  • Very high quality front camera.
  • Facial recognition system and fingerprint scanner.
  • Bright FullView display.
  • Good sound from external speaker.

Cons:

  • The screen lacks a higher resolution.
  • The dual camera doesn't take good photos in the evening.

Technical specifications of Xiaomi Redmi S2

General characteristics
ModelXiaomi Redmi S2
Date of announcement and start of salesMay 2018 / May 2018
Dimensions (LxWxH)160.7 x 77.3 x 8.1 mm.
Weight170 g
Available colorsrose gold, champagne gold, silver
operating systemAndroid 8.1 (Oreo) + MIUI 9.5
Connection
Number and type of SIM cardstwo, Nano-SIM, dual stand-by
Communication standard in 2G networksGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
CDMA 800 & TD-SCDMA
Communication standard in 3G networksHSDPA 850 / 900 / 1900 / 2100
Communication standard in 4G networksLTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500 )
Carrier CompatibilityMTS, Beeline, Megafon, Tele2, Yota
Data transfer
WiFiWi-Fi 802.11 b/g/n, WiFi Direct, hotspot
Bluetooth4.2, A2DP, LE
GPSyes, A-GPS, GLONASS, BDS
NFCNo
Infrared portThere is
Platform
CPUOcta-core Qualcomm MSM8953 Snapdragon 625
Octa-core 2.0 GHz Cortex-A53
GPUAdreno 506
Internal memory16/32 GB
RAM2/3 GB
Ports and connectors
USBmicroUSB 2.0
3.5mm jackThere is
Memory card slotmicroSD, up to 256 GB (dedicated slot)
Display
Display typeIPS LCD capacitive, 16M colors
Screen size5.99 inches (~74.5% of the front surface of the device)
Display protection2.5D glass
Camera
Main cameradual 12 MP (f/2.2, 1.25μm, PDAF) + 5 MP, gyro-EIS, phase detection autofocus, LED flash
Functionality of the main cameraGeo-tagging, touch focus, face detection, panorama, HDR
Video recording1080p@30fps
Front camera16 MP (2.0µm), HDR, LED flash
Sensors
IlluminanceThere is
ApproximationsThere is
GyroscopeThere is
CompassThere is
HallNo
AccelerometerThere is
BarometerNo
Fingerprint scannerThere is
Battery
Battery type and capacityLi-Po 3080 mAh
Battery mountnon-removable
Equipment
Standard kitRedmi S2: 1
USB cable: 1
SIM tray eject clip: 1
Protective silicone case: 1
User manual: 1
Warranty card: 1
Charger: 1

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