The phone reboots itself what to do android. Why does the phone constantly reboot itself

Now we will try to figure out the reasons why your Android phone / tablet restarts by itself and we will try to understand how to fix the breakdown. It can be rebooted simply by lying on the table, in your pocket, when connected to a charger, during a call and in other cases.

Structurally, we will divide the article by types of reasons, so that it is easier to read and find the item you need.

This article is suitable for all brands that produce phones on Android 10/9/8/7: Samsung, HTC, Lenovo, LG, Sony, ZTE, Huawei, Meizu, Fly, Alcatel, Xiaomi, Nokia and others. We are not responsible for your actions.

Attention! You can ask your question to a specialist at the end of the article.

Battery as the reason for Android reboot

This reason is most common and can manifest itself in both used phones and new ones.

Here you should consider both a low-quality battery and not tight contact of the battery with the contact group on the phone.

Increase

If the reason is in the battery, then at some point the energy may not be supplied to the modules, or it is not distributed as needed, which leads to an emergency restart of the device in automatic mode. In this case, the phone may also turn itself off.

During shaking, contact is lost; during a call, the energy is not supplied correctly; while playing or working in applications, the phone heats up, which causes a lack of power, etc.

A defective battery means:

Defect in the production of the original battery (remember the case with the Samsung Galaxy Note).
Using non-original low quality battery.
Normal wear and tear of the battery over time.
Consequences of moisture getting under the case.
Signs of oxidation or "bloating" appear.
The consequences of using a non-original charging cable, which damaged the charging or power controller, as a result of which the smartphone does not correctly distribute energy and reboots itself in an emergency.

You can solve the current problem by installing a new battery and appropriate performance tests.

From practice. One client had a Samsung Android phone rebooting itself when he tried to type something on the on-screen keyboard. It turned out to be tapping on the screen, which contributed to the loss of contact between the battery and the contact group of the phone itself. It was possible to calculate by chance.

Also, when using a non-original and, moreover, a cheap cable, the voltage may be incorrectly supplied, which gives a system failure.

Reboots itself after firmware / Android OS update

Along with the previous problem, firmware is also one of the most common causes.

In this case, you need to independently analyze the situation and remember: an arbitrary reboot of your phone or tablet on Android started after the firmware update or not. There can be both a planned update of the Android version "over the air" and a forced installation via a cord.

We will also include this item:

Unsuccessful obtaining Root rights to the phone.
Conflict of installed applications. If this is the case, try using the phone for a while and see if problems persist.

Flash module problems or memory overloaded

Physical damage (shock, moisture, power surge) can damage the flash memory module. As a result, when the phone is loaded, it "drops", which causes the system to crash. A reboot occurs and the phone works again until a certain point.

The second option is to overload the RAM with installed applications. Many users do not close applications, but simply minimize them by clicking the Home button. As a result, these applications remain running in the background, consuming not only RAM, but also energy (did you notice that the battery quickly started to run out?). Here, the loss of performance and braking of the phone / tablet is also possible. We clean the RAM using special programs, or built-in.

Reboots cyclically - turned on / off

In this case, we consider both the battery and the firmware.

From practice. The client had a cyclic reboot and could only be stopped by removing the battery. The reason turned out to be in the damaged loop of the power button, as a result of which the circuit was closed and the phone turned on, reaching the logo, and then turned off. From the outside, it looked like a cyclic reboot.

Reboots itself after hit / fall

Everything is clear here: any of the phone modules could fail, or any of the loops received microcracks. To determine exactly the damaged element, you will need diagnostics with the disassembly of the device. This can only be done on the basis of a service center.

Do not try to disassemble the phone yourself. Thus, you can only make the situation worse by damaging other modules. Do you need it?

Reboots after moisture gets under the case

Even if your phone is IP67 and newer, it is not a guarantee that water will not get under the case.

There is an option that you forgot to close the lid tightly or there is a small gap in the external interfaces after the impact.

Breakage may not appear immediately, but after the oxidation of the internal modules.

We go to the service.

Android reboots itself in the cold

In the cold, the rechargeable battery partially loses its properties and can "glitch", which leads to a loss of energy on certain modules of the phone and further reboot.

This is not a standard situation and it is recommended to contact the service for diagnostics of the phone. There is an option that the battery will have to be replaced. Although it cannot be ruled out that something will have to be changed in the phone itself. Here it is no longer possible to single out any one problematic module and in each case everything is individual, depending on the phone model and its condition.

Reading time: 4 minutes

Let's look at the main reasons why the Android phone reboots by itself: what causes this and how this or that problem is eliminated.

Interestingly, both Chinese "NoName" brands and famous flagships like Samsung Galaxy, HTC One, or Sony Xperia are subject to the disadvantage. Let's understand the reasons.

Mechanical damage

Let's start with the leader of all troubles - falls. This also includes blows, negligent use, the use of a smartphone for other purposes (opening bottles, hammering nails, etc.). They seem to be funny cases, but they happen everywhere. The phone is made for calls and work, but not for such events. Yes, there are shockproof models made by companies like CAT, but there are only a few of them.

Methods of "treatment" are banal to the point of disgrace: buy a cover, bumper and protective glass. Protection is flimsy, but periodically saves. This will save you from damaging the motherboard, processor blade, memory, camera module and vital cables. But it's still worth going to the service to understand exactly the reason for the reboots.

Firmware and everything about them

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

official;
custom;
test.

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

It's more difficult with custom ones. The only stable foreign firmware can be considered exclusively Cyanogen Mod, but this team disintegrated, and the rest of the team renamed themselves Lineage OS. Their work was really worthy, but had one significant drawback: the firmware was installed at your own peril and risk. Also be prepared for reboots, CPU overheating, unstable battery, GPS, modem and other key components affecting stability.

As for the test ones, which are laid out in abundance on resources like w3bsit3-dns.com, XDA and analogues. If you are going to use your smartphone as a "test subject" and you know about the problems in advance - install. The rest is strongly discouraged from doing such things without knowing the materiel. This is the easiest way to turn a device into a brick, not to mention cyclic reboots.

Battery

The battery, like any storage device, is designed for a certain number of charge / discharge cycles. If you constantly charge the device, then sooner or later the battery will simply lose its full potential and will not hold a charge. A similar disadvantage is typical for Li-Pol models with a "memory effect". Ying must be charged to 100%, and then discharged to 0. Only then can you put on charge. Li-Ion drives have no such flaw.

Critical point: you must use only the "native" charger. The point is in the amperage indicated on the charge. If the manufacturer has indicated, for example, 1A (Ampere), then the value cannot be exceeded. Therefore, you should not use more powerful analogs for 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. In the future, 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 restart. If the battery is removable, remove it, dry the smartphone, wipe all contact pads with alcohol as gently as possible and insert the drive after 30-60 minutes. The bloated one must be replaced.

Motherboard defects and factory defects

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

Less often, a factory defect occurs, 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 see typical "sores". If you did not drop, drown or open the device, but it reboots, then something is short inside. Better to send such a smartphone under warranty. You will lose time, but you will get a workable analogue.

Memory problems

Installing a large number of applications is highly discouraged due to the conflict of certain files with each other. This is especially true for programs for working with a camera, GPS, data, antiviruses and "cleaners". Each has its own algorithm of work, so reboots are frequent.

The Android OS is regularly updated and optimized, which has a positive effect on the stability of the work. However, sometimes crashes and errors occur, resulting in slowdowns and performance degradation or a complete freeze of the device. The listed problems are solved by simply rebooting the android system on the phone.

Periodic cleaning of RAM when performance has decreased.
Malfunctions of programs or modules, for example, Wi-Fi is turned on, but does not work.
The device is frozen and does not respond to the owner's commands.
The device does not allow to work, as it is overloaded with active applications and services.

How to reboot android with hardware methods

Method 1: hold down the power button

Press and hold the on / off button for 1-3 seconds until the corresponding menu appears. If the device supports reboot, press this button and the phone will reboot. Otherwise, select the option - "Power off". The device will turn off, then hold down the "power" button again to turn on the device - this way you restart the android by turning off and on the phone.

If the phone freezes or an emergency restart is required, remove the battery, provided that the battery is of a removable type. It is not recommended to use this method on an ongoing basis, but only in an emergency.

Tablets and most modern android smartphones come with a built-in battery. Since the removal of the battery is accompanied by the disassembly of the case, in such a case there is an emergency restart of the phone with a keyboard shortcut. Hold down the power button and both volume buttons at the same time, hold for 10-15 seconds until a reboot occurs.

How to reboot your phone programmatically

Some applications, such as ROM Toolbox, contain a section for rebooting the android system. In the section "Tools" (Tootls) at the bottom, click on the "Rebooter" button and select one of the preferred options:

Power Off - turn off the power.

Restart system UI - Restart the system user interface.

Conclusion

If the performance of your mobile device has decreased or something does not work, use the power button for a regular restart, or use the programmatic method for an accelerated restart, as described in the article. If the device freezes, then hold down the combination of buttons or remove the battery.

A constantly rebooting smartphone is a problem that occurs, not as rarely as we would like. There are several common reasons why the phone reboots by itself, and we will try to cover each of them in detail.

It is worth noting that sometimes there is no visible pattern in these restarts, and sometimes there is. For example, they can happen during a call, when you are using Bluetooth, or when the device is charging.

Malicious applications

In most cases, spontaneous reboots are caused by poor quality software. Try uninstalling unused apps that might be causing the problem. Make sure your daily programs are verified and released by official developers and are not fake (downloaded from third-party resources). After all, it can be a poorly written product, and besides, it contains malicious code.

Pay special attention to software that has access to system data or with which e-mail, text messages, etc. are processed. Sometimes it happens that the gadget restarts when you receive a text message or, for example, during communication.

You may have software running in the background causing your Android to restart accidentally. If it's a software issue, try the following steps, preferably in the order shown.

This often helps. If not, read on.

Disabled or missing preinstalled apps

Have you tried to disable programs? If you accidentally go too far and disable the pre-installed applications by the manufacturer that are required to run the Android OS, this may cause a problem with the device becoming rebooted.

Go to the "Settings" - "Applications" section, there you can sort the installed software and display only system processes in the list.
If any are frozen, enable applications that are required for the device to function properly.

Now you need to reboot your smartphone for the changes to take effect.

Overheat

Many Android devices have the ability to shut down on their own if they get too hot. If you use the device in 40-degree heat, work with it at maximum brightness, with GPS, LTE on, or even play at all, the device will quickly overheat and turn off. This is done so that the rise in temperature does not damage the "gland", first of all, the battery. Try not to overload the device during the heat, in any case, do not play on it.

However, if overheating occurs constantly, even when the gadget is not under stress or in direct sunlight, this is probably evidence of a more serious problem. It can be solved either by an extreme remedy for dealing with problems (a full reset), which we will describe at the end, or a trip to the salon or store where you bought your device with a request to fix it.

Unstable battery position (unstable contact)

Of course, this problem only occurs on devices with a removable battery. For example, Samsung Galaxy S4 phones sometimes restart non-stop for this reason. Any shock, jolt can displace the battery, and the loop will come off, as a result of which the power supply of the device will be disrupted, and it will turn off or restart spontaneously.

The most common reason for this is that the back cover is slightly bent and does not hold the battery firmly in place. Another is the misalignment of the contacts or their physical damage, as the connectors wear out over time. There is a solution for every problem.

In the first case, just buy some mounting tape (electrical tape), then attach a small strip of it to the back cover to better hold the battery. When you turn it on and continue using it, you will notice that the trouble with the fact that the phone is cyclically rebooting has been decided.

Check the performance, almost always this manipulation helps.

Android crashes

Sometimes the Android system gets damaged, starts to work unstably all the time due to violations caused by external factors (virus attack, unsuccessful updates, etc.). Also, interruptions in work may be due to the memory card.

If you use a USB flash drive, take it out, walk around without it for a while, check how the equipment behaves. If everything is fine, format the card through your computer (insert it into the slot, right-click on it in “My Computer” and click “Format”), after saving all the data from it in another place, and insert it back. But be prepared that you may need to replace it.

Attention! If you're not using a USB flash drive, your only option might be to factory reset your device. However, remember that a reset will erase all data from the device, so be sure to make a backup.

On most Android devices, you can perform a Hard Reset by going to Settings> Backup & Reset> Reset Device. This solution is worth trying in the case of constant overheating of the mobile.

Button lag

Sometimes the Power button absorbs moisture or debris gets underneath. Make sure your gadget doesn't have this problem. Examine the key, remember if the smartphone fell into the water. Also check that nothing is putting pressure on the button and causing the mobile to restart.

Defective hardware

If all of the above has been tried and your Android still restarts non-stop, then obviously you have some kind of breakdown. Contact the retailer or manufacturer with the problem. If your phone is under warranty, you will get it repaired free of charge.

What else can you do?

It should be said about other simple solutions that often help. For example, you can do the following:

remove the battery and leave the device without it for 15 minutes. Then insert it and start the device;
install an anti-virus from the application store, for example, from Kaspersky Lab and scan the system for infection;
insert a new SIM-card into the device, as old ones sometimes conflict with modern devices, and they can turn off when you call.

Perhaps this is all that you can do yourself without flashing your smartphone to custom firmware. Try simple options first, then move on to more complex ones. Most likely, you will be able to overcome the problem.

There are many reasons due to which a smartphone reboot may occur. If the smartphone starts to reboot itself and you have it under warranty - urgently take the device to the service center. Self-repair or firmware may void warranty service. If you no longer have a guarantee or you have lost it for some reason, read the article below.

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

If you dropped your smartphone and it began to reboot on its own, then the reason is that somewhere the smartphone's power supply circuit is broken or some element is out of order. Any device can be dropped, but repairing it can be more difficult.

So, some companies may refuse to repair at all, while others can make paid repairs. For example, if your Samsung smartphone starts to reboot after a fall, then the first thing you need to do is call the hotline 8-800-555-55-55 to clarify whether the device can be repaired. Usually service centers go to a meeting, but you will pay for repairs out of your pocket.

You can also return your smartphone to an unauthorized service center. Choose according to customer reviews, so as not to run into outright "hack". Very often, falls bring such surprises as broken screens, breakdown of the case, so in any case, you cannot do without a service center. But if you have straight hands, then you can try to repair the smartphone yourself by ordering spare parts, for example, for

The smartphone is already several years old and it started to reboot 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 take more effort to do this. And straight arms, of course.

The smartphone restarts after being exposed to water.

Smartphone water is a huge problem unless you have a rugged smartphone like Sony. The ingress of moisture on the board guarantees the failure of the device in 90% of cases. Oxidation of contacts occurs, in which case it can "short out" at the point of ingress of moisture. After getting water, the smartphone can not only reboot, but also give out other "jokes", for example, not turn on at all.

In such cases, diagnostics at the service center is required and very often the cost of repair is obtained as a new device, since in the event of water ingress, it is necessary to replace the motherboard or the component that has gotten wet. The store and service center will refuse to repair, as the operating conditions of the device were violated. Even after repairs, it is not a fact that the device will work normally. Therefore, if you have "drowned" your smartphone, I recommend buying a new one.

The smartphone restarts when turned on.

Most likely you dabbled with the firmware of your device or there was a failure in the firmware. What to do in this case? Perform a factory reset. In Android, this is done using the volume on or off keys, plus the power key. That is, you simultaneously need to hold down the volume key up + the power button or the volume down key + the power button.

You should get to the Recovery menu, from which you can perform a factory reset. If you have a "crooked" firmware, especially not a 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 restarts after inserting the SIM card.

Sometimes there are such cases. I read on the forums that people complained about Lenovo smartphones, allegedly Lenovo reboots after installing the SIM card. Perhaps a solution is to change the SIM card to a new one, if you have it for several years, try to reset the settings or upgrade to a new firmware, if available. An extreme case is to try to insert another SIM card. But here the defect of the device is on the face, the device needs to be repaired. But be careful! In Russia, with the repair of devices, everything is very bad and very often under repair they mean a flashing of a smartphone. So it was with me with a smartphone from HTC.

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

The smartphone itself reboots just like that or other reasons for rebooting the device.

Check the memory card if available. Very often, it can be a faulty memory card. The first thing to do is format it. Preferably in FAT32 or ExtFAT formats.

Don't use Android cleaners. 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 the 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 99% of the time this is cheating! You shouldn't be bothered with it.

Do not use questionable programs, especially desktop launchers, which you are not sure about. Such programs can easily cause an Android device to crash.

If you changed the processor frequency, return everything as it was. This problem affects the owners of devices who have set themselves Root in order to then "optimize" the operation of the device.

As usual, 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.