Why does the phone reboot on its own Lenovo. Cyclic reboot of Samsung smartphone: causes and solution to the problem

A smartphone or tablet, like any other electronic device, can be subject to technical glitches.

One of these manifestations is the independent reboot of the gadget, which can occur either regularly or from time to time at various intervals. Today we will look at the main reasons for this phenomenon.

Moisture ingress

Water is an excellent conductor of current and, when it gets inside the phone, it can cause the closure of various contacts, from the power button to the battery controller. The result is random device shutdowns.

CPU overheating

A smartphone is a multitasking device, i.e. we can work with several programs simultaneously. The more programs are running, the more intensively resources are used. Including the heart of the device - its processor - works more actively. The operation of the processor is accompanied by heating, which can damage it. If the throttling system, which we described in detail in, works incorrectly or late, the gadget will reboot.

You need to calculate the capabilities of your device and not keep the processor at maximum load. To do this, close unused applications more often, and choose modern games with heavy graphics in accordance with the system requirements.

Damage to electronic components

A smartphone consists of many electronic components - motherboard, controllers, processor, memory module and others. They can be damaged as a result of external influence (fall, impact) or due to the banal depletion of resources. In any case, the failure of one of the components leads to incorrect operation of the entire device, including constant reboots. This requires qualified diagnostics.

If none of the previous points correspond to your situation, all that remains is to contact the service center.

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Why does my phone keep rebooting?

1. The most common reason why the phone keeps rebooting is a software glitch or a conflict between several installed applications. For example, several strong antiviruses may be installed on your phone, which, as you know, cannot be done, because they perceive each other as a danger and try to remove them from the system. It is their conflict that can lead to a constant reboot of the phone.

2. In addition, a reboot can be caused by moisture trapped under the body of the mobile device. After all, water is an excellent conductor for current and if it comes into contact with any contact, it shorts out, which causes the phone to malfunction.

3. Not so often, but still sometimes the cause of a reboot can be a failure of the signal power amplifier, because a broken amplifier requires an increased amount of electricity, so the phone can constantly turn on and off, as well as damage to the internal board of the phone.

How to solve the problem with your phone constantly rebooting

Having dealt with the problems of constant rebooting of the mobile device, you can move on to solving them. If it occurs due to a software failure or application conflict, then you need to go to a service center, where a technician can determine the exact cause of the problem. After all, it will be extremely difficult to independently determine which applications are in conflict, or which program crashed. But if several antiviruses are detected on your phone, you can try to remove one of them and reboot the phone yourself. Perhaps after this it will work normally and other useful applications will be available.

In addition, you should contact the service center specialists also in the event that moisture gets into the phone. Although if you take it apart and give it some time to dry, then the problem may disappear.

Well, the power amplifier, as well as the internal board of the phone, will have to be replaced with new ones, since only this will help solve the problem with the phone constantly rebooting.

There are quite a few reasons why a smartphone may reboot. If your smartphone starts to reboot on its own and it is under warranty, urgently take the device to a service center. Self-repair or flashing may result in denial of warranty service. If you no longer have a guarantee or have lost it for some reason, read the article below.

The smartphone begins to reboot on its own after a fall.

If you dropped your smartphone and it started to reboot on its own, then the reason is that somewhere the power supply circuit of the smartphone is broken or some element has failed. Any device can be dropped, but repairs can be more difficult.

So, some companies may refuse repairs altogether, while others may charge for repairs. For example, if your Samsung smartphone starts to reboot after a crash, then the first thing you need to do is call the hotline 8-800-555-55-55 to find out whether the device can be repaired. Usually service centers will accommodate you, but you will pay for the repairs out of your own pocket.

You can also take your smartphone to an unauthorized service center. Choose based on customer reviews so as not to run into outright hack work. Very often, falls bring surprises such as broken screens or case damage, so in any case you cannot do without a service center. But if you have direct hands, then you can try to repair the smartphone yourself by ordering spare parts, for example from

The smartphone is several years old and it started rebooting on its own.

Check the battery. It is advisable to replace it with a new one. In almost all cases, the main reason is a dead smartphone battery. In many phones, especially older ones, the battery can be removed. Modern devices, such as Sony smartphones, have a non-removable battery, but in fact it is also removable, but it will require more effort. And straight arms, of course.

The smartphone reboots after getting water.

Water for a smartphone is a huge problem, unless of course you have a rugged smartphone like Sony. Moisture getting on the board guarantees failure of the device in 90% of cases. Oxidation of the contacts occurs, in this case it can “short-circuit” in the place where moisture gets in. After water gets in, the smartphone may not only reboot, but also produce other “jokes”, for example, not turning on at all.

In such cases, diagnostics are required at a service center and very often the cost of repair is as good as a new device, since if water gets in, you have to replace the system board or the component that got wet. The store and service center will refuse repairs because the operating conditions of the device were violated. Even after repair, it is not a fact that the device will work normally. Therefore, if you “drowned” your smartphone, I recommend buying a new one.

The smartphone reboots when turned on.

Most likely you were messing around with the firmware of your device or there was a glitch in the firmware. What to do in this case? Perform a factory reset. On Android, this is done using the volume on or off keys, plus the power key. That is, you need to simultaneously press the Volume Up key + Power button or the Volume Down key + Power button.

You should be taken to the Recovery menu from which you can perform a factory reset. If you have a “crooked” firmware, especially not the factory one, but some kind of mod, then in this case you will need to go back to the factory firmware. Information on how to flash a smartphone is on the manufacturer’s official website, and the firmware files should also be there.

The smartphone reboots after installing the SIM card.

Sometimes such cases come across. I read on forums that people complained about Lenovo smartphones, allegedly Lenovo reboots after installing a SIM card. A possible solution is to change the SIM card to a new one if you have it for several years, try resetting the settings or updating to new firmware, if available. An extreme case is to try inserting another SIM card. But here the device is defective and the device needs to be repaired. But be careful! In Russia, the repair of devices is very bad and very often by repair they mean flashing a smartphone. This happened to me with a smartphone from HTC.

Try choosing forced 3G or 2G only mode. To do this, use *#*#4636#*#*, with this command you will be taken to the engineering menu of your smartphone. In some smartphones, you can set the network to only 3G or 2G from the settings menu. But in many modern devices this function is blocked, instead there is 3G or 2G priority. If the problem disappears, then there is a high probability that the problem is in the radio module.

The smartphone itself reboots for no reason or there are other reasons for rebooting the device.

Check your memory card if you have one. Very often the issue may be a faulty memory card. The first thing to do is format it. Preferably in FAT32 or ExtFAT formats.

Do not use cleaners for Android. Very often, after using various cleaners, you will not only lose your files, but your device will also fail. In this case, resetting the settings to factory settings or flashing the device will help. The best cleaner for your device - backup files and reset to factory settings! Many sites recommend using cleaners to clean your smartphone from viruses, unnecessary files and speed up the system! Know that in 99% of cases this is a scam! You shouldn't fall for it.

Do not use dubious programs, especially desktop launchers that you are not sure of. Such programs can easily cause a system crash on your Android device.

If you changed the processor frequency, return everything as it was. This problem affects device owners who have installed Root to themselves in order to later “optimize” the operation of the device.

As always, comments and discussion on the article are welcome. Very often in the comments you can find a specific reason for your smartphone or ask a question.

Let's look at the main reasons why an Android phone reboots on its own: what causes this and how to fix this or that problem. It’s interesting that both Chinese “NoName” brands and famous flagships like Samsung Galaxy, HTC One, or Sony Xperia are susceptible to the flaw. Let's understand the reasons.

Mechanical damage

Let's start with the leader of all troubles - falls. This also includes blows, careless use, and the use of a smartphone for other purposes (opening bottles, hammering nails, etc.). These may seem like funny incidents, but they happen everywhere. The phone is designed for calls and work, but not for such events. Yes, there are shock-resistant models produced by companies like CAT, but there are only a few of them.

The methods of “treatment” are banal to the point of disgrace: buy a case, a bumper and a protective glass. The protection is flimsy, but periodically saves. This will protect you from damage to the motherboard, failure of the processor, memory, camera module and vital cables. But it’s still worth going to the service to accurately understand the reason for the reboots.

Firmwares and everything about them

Have you often heard from friends about “firmware”? In short, this is the replacement of the “native” smartphone OS with a more recent version, or a modified one. There are 3 options:

• official;
• custom;
• test.

If the native firmware of the device begins to slow down (too many applications, have not been updated for a long time, viruses, residual cache files), then you can reset settings to factory defaults– should help in 90% of cases. It is also worth looking on the Internet to see which version of Android is current for the smartphone at the moment. The update process occurs independently without your intervention, so no skills are required.

With custom ones it’s more difficult. The only stable foreign firmware can be considered exclusively Cyanogen Mod, but this team disbanded, and the remnants of the team renamed themselves Lineage OS. Their work was truly worthy, but had one significant drawback: install the firmware at your own peril and risk. Also be prepared for reboots, CPU overheating, unstable battery, GPS, modem and other key components that affect stability.

As for the test ones, which are posted in abundance on resources like 4PDA, XDA and analogues. If you are going to use your smartphone as a “test subject” and know about the problems in advance, install it. Others are categorically not recommended to engage in such things without knowledge of the hardware. This is the easiest way to turn a device into a “brick”, not to mention cyclic reboots.

Battery

A battery, like any storage device, is designed for a certain number of charge/discharge cycles. If you constantly charge the device, sooner or later the battery will simply lose all its potential and will not hold a charge. A similar drawback is typical for Li-Pol models with a “memory effect”. The unit must be charged to 100%, and then discharged to 0. Only after this can it be charged. Li-Ion drives are free of this flaw.

Critical point: you must use only the “native” charger. The point is the current indicated on the charger. If the manufacturer indicated, for example, 1A (Ampere), then the value cannot be exceeded. Therefore, you should not use more powerful analogues of 1.5-2A, since you can “kill” the battery much faster. It will simply swell. The average cycle with proper operation is limited to 1.5-2 years. Subsequently, the battery begins to lose its properties.

Another factor is contact oxidation. If moisture has accumulated inside the device, then this may be the reason for the reboot. If the battery is removable, remove it, dry the smartphone, wipe all contact pads with alcohol as carefully as possible and insert the drive after 30-60 minutes. The swollen one must be replaced.

Motherboard defects and manufacturing defects

This category is the most unstable due to the fact that there are many reasons for the breakdown of contacts, cables and other elements; only a complete analysis and testing of each component individually will help here. Often the defect is caused by a fall, “curiosity” (opening a smartphone to see how everything works and subsequent careless assembly), moisture, dust and more.

Less common is a manufacturing defect, which affects no more than 1-2 gadgets per 100,000 devices. The manufacturer often indicates this himself. Also look at thematic forums, look for a topic with your model and look for characteristic “sores”. If you haven’t dropped, drowned or opened the device, but it reboots, then something is shorting inside. It is better to send such a smartphone under warranty. You will lose time, but you will get a working analogue.

Memory problems

Installing a large number of applications is highly not recommended due to the conflict of certain files with each other. This is especially true for programs for working with cameras, GPS, data, antiviruses and cleaners. Each has its own operating algorithm, so reboots are common.

First, keep only 1 option for certain apps. Costs extra format sd card, if files were placed on it. Don't forget about

Android phone keeps rebooting

What to do if your Android phone keeps rebooting

An unauthorized reboot of an Android smartphone is usually associated with unstable operation of an application on the device. There is one factor that affects the operation of a smartphone: if you download and install a lot of applications and then delete them and then do the same thing, then after a while you will notice that Android does not work so fast, and sometimes it starts to freeze. If you practice this, then the best solution would be a smartphone.

It is best, of course, to download exactly those applications that have already been verified, have good popularity and a high rating.

The question arises why the smartphone freezes or reboots after deleting applications. There is a very large number of applications on Google Play: some are “completely safe” - they do not affect the operation of the device in any way, while others may conflict with similar ones or leave a lot of garbage after removal, thereby causing crashes and reboots.

If after installing the application the smartphone starts to reboot, this should alert you. It is better to delete such an application immediately, and make sure that all system folders have also been deleted from the device.

Another option for checking is the Device; read more about how to do this in our article.

Android keeps rebooting - it's worth checking for a virus

One of the obvious options for why a smartphone reboots is that the device is infected with viruses and all sorts of malware. To check your phone for a virus, use applications that analyze the entire system.

Video about the popular and effective antivirus for Android devices DrWeb

Video about an application that analyzes the Android system - Malwarebytes for Android

Read more about this in our article.

Disabling the SD card during spontaneous reboots of the Android device

If you notice that during any operation your smartphone starts to turn off and turn on again. Disconnect the memory card on the device and try again the action that caused the reboot. If you find that the memory card is the cause. Transfer the data (photos, videos and other data) to your PC and format the card. For more details on how to disconnect an SD card and format it, we wrote in