What to do if it says wpa2 protection saved. Establishing a Wi-Fi connection on Android

Before you begin to find out why Wi-Fi or the Internet does not work, you should know (especially for those who have just purchased a Wi-Fi router) that it is not enough to just connect the provider cable to the router, you also need to configure it (set up the Internet and Wi-Fi network ). All of the methods described below are valid if Wi-Fi and the Internet were working for you before, and then suddenly stopped or you cannot connect a new device to Wi-Fi. For convenience, I divided the article into two parts, the first is devoted to the inability to connect to a wireless network, the second part will answer your questions if you are connected to a Wi-Fi network but there is no Internet.

Cannot connect to Wi-Fi network.

Reboot the router.

The first thing you need to do if you have problems connecting to a Wi-Fi network is to restart the router. To do this, simply disconnect the power supply from the router and connect it again after a few seconds. After 1-2 minutes. The device will boot, then try connecting to the wireless network again. To avoid such situations in the future, I recommend updating the router firmware (perhaps the manufacturer knows about the problem and fixed it in the new firmware).

Enabling the Wi-Fi module on the laptop.

Check if Wi-Fi is turned on on your laptop, I won’t bother, I described all the ways to turn on Wi-Fi in the article How to turn on Wi-Fi on a laptop .

Change the wireless network mode.

If you are trying to connect a device (laptop, smartphone) that is more than 5-7 years old, you must take into account that it may not support the modern Wi-Fi mode - n. Therefore, you need to switch the router to an operating mode that is supported by the device or enable mixed mode b/g/n. More details about Wi-Fi operating modes are described. In order to switch the wireless network mode, you need to go to the router’s web interface, go to the Wi-Fi settings and select the appropriate mode.

Removing a duplicate network SSID.

One of the possible problems of not being able to connect to Wi-Fi is a duplicate Wi-Fi network name (SSID). Suppose you come to your friends, their Wi-Fi network is called “Home”, you successfully connected to it. Time passed and you came across the same network name with other friends or at home. The laptop (this also applies to tablets and smartphones) tries to connect to the network using the previously saved password, but it fails because a new password is used for this name. To solve this problem, you need to remove the matching network from the list of saved Wi-Fi networks.

To do this, right-click on network icon in the lower right corner of the screen and select "Network and Sharing Center."

After this, you will see a list of saved wireless networks. If you see that the network you are trying to connect to is in this list, you need to remove it from this list. Select the network and click the "Delete" button. After this, you will need to enter a password to connect to the wireless network.

No Internet via Wi-Fi.

Internet payment check.

The simplest thing that can happen when the Internet is not working is that it’s time to pay for it or the provider is working on it. To clarify the situation, call your provider and find out if you have a debt for the Internet and whether work is being done on the line.

Static IP address.

One of the problems with the Internet not working may be that the registered static address does not have the network settings that are necessary. In this case, I recommend using automatic network settings retrieval. To do this, you need to go to the Network and Sharing Center. One way to do this is to right-click on network icon in the lower right corner of the screen and select "Network and Sharing Center".

Another way is to use hotkeys + , enter the command ncpa.cpl and press Enter.

It doesn’t matter which method you used, the result will be the same - the Network Connections window will appear on the monitor. Next, you need to double-click on the wireless connection. In the status window that opens, select “Properties” in the properties window “Internet Protocol Version 4 (TCP/IPv4)”

Problem with the router.

The Internet may not work due to a router failure; the simplest thing you can do is reboot it. There are situations when the router resets the Internet settings, in which case you need to connect to it via the web interface and re-enter the Internet settings, in order to experience fewer problems with the router in the future, I recommend updating its firmware.

Conclusion

In this article, I described all the ways I know to solve problems with Wi-Fi and the Internet. If these methods do not help you, you can describe the problem in detail in the comments and I, together with the readers of this site, will try to help you.

If Android does not connect to WiFi, then most often the user sees the “Obtaining an IP address” message or the “Authentication Error” notification. Another common connection error is that Android writes “Saved, WPA/WPA2 protection,” but does not connect to the Internet.

This article is suitable for all brands that produce phones on Android 9/8/7/6: Samsung, HTC, Lenovo, LG, Sony, ZTE, Huawei, Meizu, Fly, Alcatel, Xiaomi, Nokia and others. We are not responsible for your actions.

Possible causes of failure

If Android cannot connect to Wi-Fi - for example, instead of an active Wi-Fi icon, you see a gray button and an exclamation mark icon - then the reason for this could be:

Wrong from Wi-Fi.
Setting an unsupported security type or wireless standard in the router settings.
Problems with Android firmware.

The first step is to understand which device is having problems. If only your phone does not connect to the point, then the reason should be sought in its settings and firmware. If no device finds the wireless network, then you should check the router settings.

"Obtaining an IP address" message

If, when you try to connect, a message with the text “ ” appears, but the connection is not established, then the reason for this may be that the DHCP server is disabled in the router settings or problems with Android. A simple reboot of the router can help.

If the DHCP server fails, restarting the device will fix it. When saving an error:

Open your router settings.
Make sure the DHCP server is enabled.

Increase

Depending on the router model, the procedure for enabling/disabling DHCP may vary, so you will need to look for instructions for your device.

Authentication Error

If connection authentication fails, the problem is most likely caused by entering your Wi-Fi password incorrectly. To resolve the error:

Forget the wireless hotspot on your phone/tablet.
Reboot your router.

Increase

Change your password using only Latin letters and numbers.
Make sure that WPA2-PSK is selected for network authentication.

Increase

If your phone does not support the WPA2-PSK standard, then select another mode - WPA, WPA2. It’s clear that you can’t do this in the subway or a shopping center, so you just have to accept it. But at home or in a hotel, you can access the router and check the wireless network settings.

Saved, WPAWPA2 protection

If the connection is made without a password, then there cannot be an authentication error. However, there is another situation - the network is saved, but . Usually rebooting the router helps, but sometimes you have to go into the settings quite deeply.

Increase

Also, look at the number of devices allowed. If it is “0”, then there are no restrictions.

There are many reasons why your phone won't connect to wifi. Mobile phones can provide us with access to the Internet, no matter where we are.

However, sometimes it turns out that the phone has stopped connecting to a non-wifi network.

In most cases, the smartphone tells us what the problem is by displaying characteristic notifications on the screen.

Sometimes, when the connection indicator shows that the phone is connected to Wi-Fi, you still cannot access the Internet and pages do not load.

In this case, it makes sense to look for the “ ” notification in the network settings, which often appears in such cases.

In this case, you can try to solve the problem in two ways. Often this problem occurs due to the fault of the router.

Most likely, no matter what device you tried to connect to this network from at that moment, from a laptop or tablet, the result would be the same.

The simplest solution is to try turning the router off and on again. Let it cool down for about 10 minutes and try to connect again. It is likely that the problem will be fixed.
In addition, this notification may appear if Internet access is not paid for at home. This problem is also completely solvable.
If the Internet has been paid for, the wifi router has been turned off and on again, but you still cannot access the Internet, then the problem is most likely on the operator’s side, and therefore you should call customer support.
Sometimes you will have to do the same if you cannot access the Internet only from your phone, although you can do this from other devices.

Important! Regardless of what connection problem and what method you solve, after taking action, you need to turn off the connection on the device. Then turn it on again to check its functionality.

Obtaining an IP address...

Another common problem arises during the process of connecting your phone to a wifi router. The connection process stops when the phone attempts to obtain an IP address.

The notification “Obtaining an IP address...” may remain next to the network name for hours. Naturally, you cannot go online, since your phone is not connected to it.

The problem is not solved as easily as the previous one. However, the first step is the same - turn off and turn on the router again after 10 minutes. If you still cannot connect after this, proceed to the second step.
Not the most convenient way is to register a static IP address on the device. You actually specify the parameters of the network to which you connect at home.
However, when using this method, problems will arise with accessing the Internet through other networks. In order to do this, you will have to erase the IP address and change its type.

You can register a static address as follows:

When you click on the name of the wifi network, an item called “Advanced settings”, “Advanced settings” or similar will appear in the window that opens;
Check the box next to this item;
After that, in the “IP Settings” or “IP Settings” section, change the network protocol type (DHCP) to static and enter the IP.

Before you try to connect to the Internet through another network, change the protocol type again from static to automatic.

Authentication Error

A common reason why you cannot connect to the Internet.

This notification that your phone displays after trying to connect to your home's wifi network actually means that the network has not recognized your device as suitable for wifi reception.

The most common reason why this happens is an incorrect network password. Check it carefully and try to go online again. If you are sure that the password is correct, proceed to the next step.

This is already familiar advice. Try turning the router off and on again after a few minutes. This is a universal recommendation that is given even by customer support operators.
A more difficult way is to try making changes to the router settings. To do this, you need to go to its settings page through a browser.

Select the following data in the router settings. Version WPA-PSK, encryption – AES. Enter the password.

On most routers these should only be numbers, no more than 8 pieces. Set the security mode to WPA\WPA 2 personal.

These options make connecting to wifi as easy as possible. However, such actions are necessary only when nothing else has helped.

And, in addition, there is reason to believe that there are compatibility problems, for example, with the type of encryption used by the router and phone.

Let's understand the main reasons for the message "Authentication failed when connecting to Wi-Fi" on Android tablets, phones and laptops running Windows 7.

Fixing WiFi authentication error:

The most popular reason. why the phone does not connect to Wi-Fi - the password was entered incorrectly when connecting to the router.
Make sure you enter the password correctly, including capital letters and numbers,
the password may be only in English!!!
If it doesn’t work, we’ll re-enter the password into the router. How to do this is below.

At the end of the answer, we will consider the option when the password is entered correctly but Wi-Fi does not connect. In this case, you need to reconfigure the network settings in the router.
This is interesting:

Connect to Wi-Fi on Android:

1. Click the "Settings" button on your tablet or phone - "Wireless Networks".
In the list of networks, find your connection that you cannot connect to and delete it.

2. Add the network a second time, carefully enter the password and try to connect.
If the problem remains - re-enter the password into the router and carefully enter it when connecting to a wireless network.

How does authentication work?

In essence, authentication is a procedure during which the correctness of the ID and password is verified. Several types of authentication are used. The desired one is selected in the settings menu of the device used as an access point. Authentication usually refers to the type of router data encryption.

The most commonly used technology is WPA-2, which uses the symmetric AES algorithm. The authentication method for wireless clients is WPA2 Personal. It is impossible for an attacker, regardless of his qualifications, to bypass this protection. In normal conditions, for example, at home, one key is installed for everyone. Its use creates a connection to the network.

In conditions where more serious protection is needed, for example, at sensitive facilities, a different approach is used. Each subscriber who has the right to connect to the network receives his own password.

Steps to connect to wireless Internet

Process or tablet to " wifi" looks like this. First, Wi-Fi is turned on on your own device. To do this, in most cases, it is enough to swipe - a sliding movement with your finger - from the top of the screen down and click on the desired icon. The name of the network will appear on the screen and prompt you to connect to it. After that, you just need to enter the password in a special field, and everything will go well: the user will gain access. However, sometimes an error occurs during authentication.

Reasons for this malfunction

Situations when, when connecting a device running on Android, for example, a smartphone Samsung Galaxy, on a Sony tablet or any other device, it says on the screen about an authentication error, two: a mismatch in the entered password or a different type of encryption on the router and the connected device. They cover most cases, but sometimes malfunctions and errors are caused by reasons of a different nature.

Incorrect password

Typically, an authentication error when connecting a phone occurs because users enter the set password incorrectly. This is usually due to the high complexity of the latter. Users, by analogy with passwords for their own mail or social networks, are increasingly using different case of letters, their random arrangement and interlacing with numbers and other symbols. All this leads to the fact that many people who rarely connect to a particular network cannot enter the code correctly and without errors.

Faulty router

Sometimes wifi authentication errors are caused by the device, or access point, being faulty at a particular point in time. Modern routers are equipped with color indicators that indicate this. However, professionals or experienced users pay attention to their incorrect operation.

Often, a smartphone or tablet does not connect to the network due to the fact that at the hardware level, due to obsolescence, it is not capable of working with the modern high-speed 802.11N standard.

Data encryption type mismatch

A frequently occurring authentication error on an Android phone is reported due to an encryption type mismatch.

Modern routers, by default, install a symmetric encryption algorithm - AES. However, owners of many old devices in this case simply cannot connect Wi-Fi on their phone. This happens because the installed version of Android is outdated and does not support AES. Also, some devices do not support WPA-2. All this leads to an error.

Ways to solve the authentication problem

Based on the reasons described above for a malfunction when connecting to a wireless network, it becomes clear that there is no single answer to the question of how to quickly remove an authentication error. In each specific case, a different algorithm is used to solve identification problems. They will be described in more detail below.

Reconnecting the network

If an identification error occurs, you must first try to connect again. To do this, the device is switched to flight mode for 20-30 seconds. Sometimes a connection problem can be fixed by simply deleting network data. Let's consider this using the example of a Samsung smartphone. In the first case, you swipe from top to bottom, press the “Airplane Mode” button, and then turn it off. In the second case, you need to go to the settings, go to the wi-fi sub-item, and select the desired network there. By holding your finger on its name for a long time, a menu is called up where the “Forget network” option is selected. After this, information related to a specific wireless network is erased from the memory of the smartphone or tablet and, most likely, authentication errors can be avoided. In addition, you should be aware that some devices may not be able to work with the 802.11N standard. To do this, the b/g/n mixed mode must be changed to b/g mixed:

Authentication Error

There are situations when Android devices are unable to connect to the network when authenticating due to a conflict with the version of the security standard set in the settings. Moreover, this applies to both modern phones and outdated models. In this situation, the simplest solution is to change the newest WPA-2 to the older WPA. In most cases, this is due to a failure in the router’s firmware, so the described solution is temporary; it’s worth updating to a newer and more current firmware version.

Sometimes, an authentication error means that older versions of Android are incompatible with the AES algorithm. In this case, the authentication method changes to WPA-Auto-Personal, after which you will be able to select the TKIP protocol. ASUS routers use an advanced version that uses two protocols at once, depending on the connected device.

The fact that this is the cause of the authentication error is determined by the temporary setting of open access. In the authentication method, select Open System from the drop-down menu. If after this step the smartphone is successfully authenticated, it is obvious that you should experiment with this field. Using a brute force method, determine a method that will function without errors.

Finding the reason in the router

If the authentication error is presumably caused by the router, which is an access point, the following simple manipulations are performed with it. The simplest solution to the error is a banal reboot. This is done by turning off the power button and pressing it again after half a minute. If this does not help, see if the network is available for authentication. This is done through the administrator interface, which is easy to access by entering 192.168.1.1 It is necessary that the SSID (network name) be written in English, and that the “hide SSID” checkbox is not checked.

Changing passwords

When correcting authentication errors, one cannot help but mention changing the set password. Instead of a complex set of symbols and signs, make a simple password of numbers, which will allow you to successfully authenticate.

Additional methods to solve the problem

If the above methods do not fix authentication errors, the reason may be, for example, filtering possible clients by MAC address. When the function is active, the tablet or phone will not be able to connect successfully. This happens if their MAC addresses are not included in a special allow list located directly in the administrator interface of the router. Another solution to the error is used for equipment manufactured by Lenovo. To successfully pass authentication, according to reviews from owners of smartphones from this company, it is necessary to change the channel from Automatic to 6.

In some situations, to correct an error that occurred during authentication, it is worth trying to change the channel width. Setting a higher value increases speed at the cost of greater throughput. Sometimes rebooting the device connected to the access point also helps.

It is possible to experiment with other settings, for example, change the wireless network operating mode, use static channels.

In any case, do not despair when an authentication error appears when connecting to a wifi network on any device running Android. To decide what to do to correct the problem, you must first identify the cause of the problem.