Android phones are great. They're powerful, they're coming to Android 12 soon, and they have everything you need to be comfortable to use. But a problem arises that can bring a few nerve-wracking moments. One of the common problems that people often face is that their phone periodically turns off on its own. As they say, everyone has such a friend. If this has happened to you too, you need to solve the problem, and now is the right time for this. Some of the advice in the article may seem too obvious, but do not rush to dismiss them. Often the very first option that comes to mind turns out to be correct.
The smartphone should work, not turn off.
Whether it's the result of a low battery, an easy-to-fix bug, or something more serious, here are some tips to stop your phone turning off unscheduled.
Hardware faults
Hardware problems often affect the phone turning on. There may be several reasons:
- Overheating of the processor or other parts of the gadget. In this case, you need to pull out the battery and let the phone sit unassembled.
- Malfunctions of control elements - various controllers may fail. For example, when a charge controller fails, it can always inform the smartphone that there is no charge on the battery, and accordingly the phone will immediately turn off. Only contacting a service center will help here.
- Oxidation of terminals and contacts. This usually happens if the phone was “drowned” in water, or it was left in a damp room for a long time. You can remove the battery, check and carefully clean its contacts; it’s also a good idea to check the terminals on your phone.
The solution is simple - remove the battery and clean the terminals, or leave the smartphone charging for a day.
Video
Leading author of many columns on the website expertland.ru. Well versed in technology and electronics. Capable of solving any technical problem in a matter of hours, he loves to write about his experience and best practices.
- published articles - 94
- readers - 23 919
- on the site from September 25, 2022
The phone turns off when there is a sufficient percentage of charge only if the power controller is faulty, the battery life has been exceeded, or in severe frost.
Before reading further, make sure your phone's battery indicator isn't frozen.
The worst thing, which can be indicated by sharp jumps in the percentage from a higher to a lower figure, is the “fatigue” of the battery. It is simply no longer capable of holding as much charge as the device’s standard autonomy is designed for. Below you will find out in what situations the charge indicator “jumps” and the phone turns off.
Other solutions
When the phone constantly restarts, turns off or turns on by itself, this primarily indicates that a software failure . Also, the reasons may be hidden in mechanical damage after a fall or impact. In these cases, you can go to a specialist to determine the breakdown.
But often the reason why a smartphone or tablet turns on and turns off immediately may be a trifle, and you can fix the problem yourself by flashing the device or resetting it to factory settings.
Battery charge
The reasons don't end there. Why does my phone turn off by itself? Check the battery charge. Not the most common case, but one that occurs in practice. It is the low battery charge of the phone that causes the device to turn off.
This situation is quickly resolved. All you need to do is charge your phone and then turn it on. You will notice how the problem disappears by itself. From now on, just keep an eye on your battery charge. Then you won’t have any surprises with your phone. In any case, you will be prepared to disconnect the device.
The phone turns off by itself
First you need to determine the reason why the phone turned off:
- software failure;
- mechanical damage;
- incorrect battery operation.
If, as a result of a fall, the smartphone stopped functioning normally and began to turn off, the reason is damage device parts . If no mechanical injuries were sustained, then the battery is working and the problem is related to the software.
Mechanical damage cannot be eliminated with your own hands, so you should seek repairs.
Battery is faulty or loose
The main reason why most smartphones fail is moisture. To save the gadget, cleaning and drying is required, otherwise the phone may become inoperable. If the battery is faulty, you need to replace it.
The battery may simply come off and you can place a thin sheet of paper or cardboard between the back cover and the battery. If the battery is in working condition, then you can just clean the terminals from dirt and the problem will solve itself.
Reasons for incorrect battery charge display
If you notice that something wrong is going on with the charge numbers, then do not ignore this indicator, but try to determine the reason. It could be:
- Incorrect battery calibration.
- Errors during firmware.
- Battery wear.
If the phone has been in use for several years, then most likely the reason for the rapid discharge and incorrect charge level display lies in the condition of the battery. You can try it, but it will be more effective to replace it with a new power source.
To slow down the rate of battery wear, use an original charger and try to charge your phone/tablet from a wall outlet rather than a computer USB.
If errors in determining the charge level appeared after flashing the device, try flashing it again, after charging the battery to 100%. Or install another firmware if you are using custom builds.
Hardware faults
Hardware problems often affect the phone turning on. There may be several reasons:
- Overheating of the processor or other parts of the gadget. In this case, you need to pull out the battery and let the phone sit unassembled.
- Malfunctions of control elements - various controllers may fail. For example, when a charge controller fails, it can always inform the smartphone that there is no charge on the battery, and accordingly the phone will immediately turn off. Only contacting a service center will help here.
- Oxidation of terminals and contacts. This usually happens if the phone was “drowned” in water, or it was left in a damp room for a long time. You can remove the battery, check and carefully clean its contacts; it’s also a good idea to check the terminals on your phone.
The solution is simple - remove the battery and clean the terminals, or leave the smartphone charging for a day.
Departure
Very often, our current problem appears due to the device’s battery draining. Detecting this phenomenon is not so easy. After all, few people will independently check whether the battery fits well to the mobile phone. Especially if there were no problems with this before.
To eliminate this option, remove the back panel of your mobile phone, then press the battery firmly against the phone. All that remains is to check whether the device will turn off. Yes? Then the reason is clearly something else. No? Now you have found the source of the problem.
The phone turns off by itself
First you need to determine the reason why the phone turned off:
- software failure;
- mechanical damage;
- incorrect battery operation.
If, as a result of a fall, the smartphone stopped functioning normally and began to turn off, the reason is damage device parts . If no mechanical injuries were sustained, then the battery is working and the problem is related to the software.
Mechanical damage cannot be eliminated with your own hands, so you should seek repairs.
Battery is faulty or loose
The main reason why most smartphones fail is moisture. To save the gadget, cleaning and drying is required, otherwise the phone may become inoperable. If the battery is faulty, you need to replace it.
The battery may simply come off and you can place a thin sheet of paper or cardboard between the back cover and the battery. If the battery is in working condition, then you can just clean the terminals from dirt and the problem will solve itself.
Low battery
This can happen at any time, even when the charge is full, or maybe at 40 percent, 15 or even 5. If the phone turns off at 5/15/25 percent of the charge, you need to do a full reset and clean the device. The battery should then be recalibrated. If the situation has not changed within 2 days, you should contact a specialist.
Viruses
When your phone or tablet turns off on its own when the battery is charged, it’s time to check the device with an antivirus. Viruses are the cause of most smartphone malfunctions. You should use an antivirus program to prevent your device from becoming infected.
Software problems
There may be several problems with the software:
- Not enough memory . In this case, you need to free up space.
- Reboot the phone . Don't clog your device with unnecessary programs.
- Virus . It is necessary to detect and eliminate the pest.
System failure
The phone may turn off even when fully charged. The cause may be a failure in the device's OS, most often due to incorrect firmware . You need to repeat the firmware procedure or contact service. If the problem is not resolved, it’s time to update. The device itself may be faulty.
Hardware faults
If the device starts to freeze, then the problem probably lies in the flash card. You can simply change it.
When the phone heats up and turns off, there is likely a manufacturing defect . It's good if there is a valid warranty.
One of the worst and most expensive reasons is damage to the board , when there are no options other than replacement.
In conclusion, I would like to note that with careful use, the likelihood of uninterrupted ownership of the gadget is very high. Technology, like people, also needs to be treated with care.
Using a smartphone in everyday life, we constantly stay in touch with loved ones, friends, colleagues and other people, learn the latest news and share information. If the device suddenly turns off against the owner’s wishes, this can lead to delayed receipt of data, loss of time to turn it on, and the inability to quickly make a call or take a photo.
This problem devalues the joy of owning even the most modern smartphone.
***
Lithium polymer (Li-Po) and lithium-ion (Li-Ion) batteries (learn the difference) are rated at 3.7V per cell. Full charging to 100% gives a voltage of 4.2V (the controller no longer allows charging to avoid damage and overheating). Discharging to 0% and turning off the phone occurs when the battery reaches the “cutoff” of 2.7-3.0V (on some devices the setting is even higher - 3.2-3.4V with a small “reserve”).
Find out more about charging
Have you ever encountered a situation where the battery is discharged from 20%-50% to 1% in a matter of seconds? Write in the comments what helped you or send a message to us on VKontakte @NeovoltRu.
Subscribe in the group to news from the world of gadgets, learn about improving their autonomy and progress in scientific research on batteries. Connect with us on Facebook and Twitter. We also maintain a busy blog on Zen and Medium - come check it out.
Battery drains quickly
This problem is often encountered by users of old devices on which the battery has not been changed for a long time. A mobile device can be fully charged in the morning, but after a few hours you find that it is turned off.
In such a situation, you need to check the condition of the battery and then replace it with a new one if necessary.
Expert opinion Vasily However, do not rush to buy a new battery, but first check all the options from our guide.
Moral deterioration
The smartphone works properly for 3 to 5 years without cosmetic or major repairs, if you use it carefully. Android technology began to be published in 2008, which means the oldest is now about 9 years old. Also look carefully at the OS version: it must be at least 4.4.4, since earlier versions are not supported by either software developers or firmware manufacturers. This is an obsolete product that is simply as valuable as a memory. Getting such spare parts is a serious problem even in large cities. Repairs will cost more than the cost of modern gadgets.
Read also:
Author: · 07/16/2019
Faulty hardware or software of a smartphone can lead to unexpected failures such as freezing or random reboots at the most inopportune moment. If you suddenly encounter a similar problem, then do not panic and read our recommendations. Today we will figure out what to do if the phone turns off and on by itself.
The article describes situations that the owner of any phone may encounter, regardless of the manufacturer and the specific device.
Best answers
Daniil Moiseenko: Cerium: Vladimir:
try charging via USB via computer
Diana Sunargulova:
I have the same problem ((try buying a new battery
Maria Nechepurenko:
The problem is in the battery, I had this too, change the battery, that's all!
Dmitry Voronin:
Hello, please tell me how to remove 398 fts on a motorola e when the phone turns on and immediately turns off, what should I do please tell me
Problematic programs
The phone shutdown may be related to specific applications. Pay attention to the behavior of your smartphone when working with various programs or games. If the device starts to reboot in a certain application, you should reinstall the software or get rid of it altogether. Test all third-party utilities on your smartphone and then check its functionality within a few days.
Try testing the phone without a SIM card and a MicroSD card. They can also affect the performance of the device.
And, of course, we cannot rule out hardware malfunctions that cause the phone to reboot. It will not be possible to diagnose them using software, so you will have to contact your familiar specialists or a service center. Some components may need to be replaced.
Software
The phone turns off by itself. Android is an open platform, so you can download any application from Google Play or external resources. Some people get carried away too much and do not understand that programs have simply begun to conflict with the file system, causing constant reboots. The only thing that can save you is a complete data demolition, memory re-allocation and flashing of the gadget. Resetting to factory settings rarely helps.
If you don’t know how to reflash the device, don’t even think about doing it. In the wrong hands it easily turns into a “brick” without the possibility of restoration.
In the future, you should not download several editors, players, galleries for viewing photos, and especially GPS navigators. No more than 1 representative from each direction. Exceptions are games.
Power key doesn't work
The reason lies in the closure of contacts. If the device is under warranty, but the start key is extremely unstable, and you either need to press it hard or press it repeatedly, exchange your smartphone for a new one, or take it in for free maintenance. The reason is a manufacturing defect. For older phones, the problem occurs due to their “advanced” age. Each button has its own failure life. Yours has obviously reached its limit. The contacts came loose, oxidation began, and dust got in.
Restoration will not be cheap, since you will often be asked to replace not only the membrane, but also the controller, diluting the procedure with assembly soldering. Often, the restoration amount is not much different from the price tag for a new state-owned vehicle.
Read about solving problems on Android phones on the website androproblem.ru - the best materials and useful tips.
Mechanical damage
The most common cause of sudden reboots is falling, bumps and “flights” of your gadget. There is one way to check the device after such an impact - try to bend it a little. If the device turns off, then you can judge the internal problems that may lead to a visit to the service center. The second point is the strong heating of the back cover, if this has not happened before. Perhaps the thermal pad between the chip and the cover has come off. Details can be found out only after analysis.
Just in case, check all wireless modules for serviceability and shake the gadget a little. If something rattles, take it in for repair.
System failure
Why does my phone turn off when charging and more? The last common variant of this behavior is failures in the device’s operating system. They happen simply from time to time, from viruses, and from the number of installed programs and applications. But most often, problems in the operating system are the result of incorrect firmware.
Usually after reflashing all problems are eliminated. If even after this nothing helps, it’s time to change your phone. After all, sometimes the reason lies in equipment malfunction. In such a situation, only a complete replacement of the gadget will help. Now it’s clear why the phone turns off by itself. Fixing this problem is not as difficult as it seems. The main thing is to know where to start. By the way, you should think about firmware only after eliminating all of the above reasons.
Oxidation of contacts
If you used the gadget extremely carefully and carefully, you are still not immune from oxidation of the contact base of the motherboard and other elements. Moisture can enter through the environment, sudden changes in temperature as condensation, and even from frequently carrying the phone in your hands in the summer. Your palms become sweaty and sweat seeps into the seams between the cover and the speaker/microphone openings. The concentration is minimal, but the oxidation process is a long process.
First of all, clean the contact pad on the battery. Even if it looks perfect, this does not prevent you from walking over it with a sharp object, but very carefully. This is followed by drying with a hairdryer at minimum power so that the air flow does not damage the internal parts. It is strictly not recommended to place the gadget on the battery - the device is simply not designed to operate at such a temperature.
In the most critical cases, you should go to a specialist.
How to fix the problem
If systematic shutdowns of the smartphone are caused by mechanical damage to microcircuits and other small elements, you will not be able to solve the problem yourself. If the defect is due to a faulty battery, it is enough to purchase a new one and install it.
In case of a software failure, moisture, or incorrect charging when using a non-original cable, the problem can be solved independently. The process must be carried out as carefully as possible and according to the instructions.
—> —> —> —>
Sources used:
- https://v-androide.com/instruktsii/problems/telefon-vyklyuchaetsya-sam-po-sebe.html
- https://dom-voprosov.ru/telefony/chto-delat-s-telefonom-esli-on-vklyuchaetsya-i-srazu-vyklyuchaetsya
- https://composs.ru/telefon-vklyuchaetsya-i-srazu-vyklyuchaetsya/
- https://os-helper.ru/telefon/chto-delat-esli-sam-po-sebe-vyklyuchaetsya-i-vklyuchaetsya.html
- https://samsung-wiki.com/telefon-vyklyuchaetsya-sam-po-sebe-android.html
SHARE Facebook
- tweet
Previous articlePortal about home equipment
Next articleHow to connect a phone to a radio: methods, problems, solutions
