Why does the phone turn off by itself: 5 reasons

Battery failure

Damage to the battery often leads to the phone turning off on its own.

Over time, dirt can accumulate on the terminals and the connection to them weakens. In this case, it will be enough to wipe the terminals with a rag soaked in alcohol.

You can tell that the problem is in the battery by how slowly your smartphone charges and quickly discharges. And sometimes by appearance: if it is swollen or there is mechanical damage.

The battery fails when it reaches the end of its service life or when recommendations for use and charging are not followed. For example, temperature changes or moisture ingress can cause a malfunction.

Such a battery must be replaced as quickly as possible - it is dangerous to use. This is not difficult to do yourself by purchasing a suitable model.

Android phone turns off by itself at any percentage

Constantly turning off your Android smartphone at any percentage confirms that the battery is malfunctioning. However, it is recommended to check:

whether the RAM is overloaded as a result of running several applications;
are there any viruses in the system;
whether the device is affected by external indicators (heat, cold, high humidity, temperature changes).

If none of the above causes shutdowns, then the defect is due to battery damage. What is recommended to do:

Check the battery. If the smartphone's lid opens easily, you should check the condition of the battery. There should be no swelling, signs of corrosion, dents or cracks. Of course, the condition of a battery cannot always be determined by its external signs. Sometimes this component stops functioning as a result of manufacturing defects. In this case, it must be replaced.
The device cannot be charged with the original charging cable. Now some popular brands are installing controllers on smartphones that cause disruption to the power supply circuit. This is done to ensure that users buy original charging cables from the manufacturer. In this case, you need to check whether the smartphone works normally after charging using the cable that came in the kit.

It is not recommended to try to repair the device if the reasons for shutdown are ambiguous.

How to disable T9 on Samsung

Software glitches

A software failure can cause your gadget to freeze and turn off after installing a new application or updating an old one. And also in case of unsuccessful flashing, for example, when installing an inappropriate version.

You can uninstall the last application that caused the problem yourself.

If a virus has entered the system, the components may overheat during operation, and the phone will turn off to avoid overheating. In this case, you need to run an antivirus program.

The problem may arise when using instant messengers, then it is enough to update the application or download another one.

Heating up and shutting down while playing a game or watching a video means that the software cannot cope with the load, perhaps this is typical for this particular phone model. If there is no information about this on the Internet, then it is better to contact the service.

Mechanical damage

If the phone turns itself off due to external factors, for example due to a shock, we are dealing with a typical mechanical failure. Finding the specific cause can be difficult, and any repairs are unprofitable. Possible faults include a damaged battery band. As you know, this is quite delicate, if the manufacturer has not left a reserve, it can also be very stressful. If it breaks, then in the event of an impact the tape may move and break the chain. A similar malfunction can occur in the battery poles connecting the element to the controller. The problem starts when the battery is fine and the motherboard is faulty. As a result of the impact, spontaneous rupture of solder joints is less likely to occur, which will lead to a break in the circuit. This is where the biggest problem with diagnosing defects and possible repairs arises.
It may also happen that the phone freezes or turns off after warming up. The vulnerability mainly affects phones that have not been used for a long time and is usually caused by cold February after integrated circuits.

Temperature changes

Due to a sudden change in temperature, condensation may form, which leads to oxidation of the contacts on the motherboard. Especially in budget models that do not have moisture protection.

In addition, temperature fluctuations negatively affect battery performance. It is normal for the phone to turn off in the cold; the user manual usually indicates the temperature range at which the smartphone should function stably.

In most cases, when a smartphone turns off, the problem can be fixed at a service center. But sometimes the cause may be worn-out components if the phone is more than 4-7 years old.

Author: Elena
Print

Rate this article:

(14 votes, average: 2.5 out of 5)
Share with your friends!

Defective battery

If the phone turns off spontaneously, for example, when someone tries to contact us, the battery is most likely the cause. Internal battery resistance can be expected - the phone requires a lot of power to power the cellular modem, display, media speaker and vibration motor when connected for a short time, while the processor switches to the highest clock speed due to the need to wake the device.

In case the battery is noticeably swollen, the diagnosis is simply obvious . If the battery cannot provide sufficient current, the voltage drops and the device turns off.

In older phones with a replaceable battery, repairs are relatively simple; if you use a non-replaceable battery, you may need to visit a service center. It may also happen that as a result of using the phone for a long time with a replaceable battery, the battery connector becomes bent.

This problem was once known to many Sony Ericsson phone users. This is a rare occurrence today, but if the battery is noticeably deformed, you can try pressing a small piece of paper onto it.

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.

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.

Reasons for spontaneous shutdown

The only reason for turning it off could be accidentally pressing the power button in a clothing pocket or while carrying it in a bag.

If the device turns off once at rest, then this case is not a cause for concern, but when the situation is repeated many times, then it is worth understanding the problem.

The cause must be established. They can be divided into several types:

Software.
Physical damage to the device.
Incorrect use of a smartphone.

To determine what exactly the problem is, you need to gradually eliminate all possible options.

Most devices are very temperature sensitive. To find out the temperature, you can use third-party applications. For example, CPU-Z.

CPU-Z Developer: CPUID Price: Free

If the owner uses a bumper or plastic case to protect the device, then this may be the reason for pressing the power key. Trapped debris or an ill-fitting housing can create excessive pressure in the button area. You should remove the protection to test this option.
Increased CPU load. Running programs in the background can interfere with rest mode and cause your device to perform unnecessary actions. If the main section overheats, the device also turns off the power to normalize the condition. Setting restrictions on how applications can run in the background can help you deal with this. You can find out details about the operation of the processor using special programs.
Installed applications, games. Programs may have incorrectly written codes and lead to the smartphone being turned off. If some action cannot be performed, the system tries to secure the device and restore the violation. You should uninstall the application that caused the problem after installing it.
Viruses. Malicious files use system capabilities during their operation and can command shutdowns to hide their activities. Clearing memory, deleting programs, or resetting to factory settings helps cure the device. This can be done from Safe Mode.
RAM overload. Many high-capacity applications running simultaneously consume RAM and can cause the device to shut down or reboot. If you don’t put your smartphone into standby mode during a large number of running processes, then there shouldn’t be any difficulties.
Battery swelling. If the battery has increased in volume, this means that its working substance has become unusable, and you should take care of purchasing a new battery. In this form, the level of supplied energy is significantly reduced, power outages may occur, which leads to regular shutdown of the device.
Loss of contact. The places where the battery is connected to the terminals of the smartphone can oxidize and be subject to the adhesion of grease and dirt. The contact points should be cleaned. This can be done using a swab soaked in alcohol or a metal object.
Moisture ingress. If the device does not have a level of protection of at least IP65, then it is not protected from the penetration of water into the housing, even with occasional fleeting contact.
Condensation can cause the contacts to short-circuit for a short time, causing the smartphone to turn off. To avoid such situations, do not use the device in places with high humidity. If contact has already taken place, then it is worth drying the device. To do this, open all available ports, remove the battery and leave it disassembled in a dry place (do not place it on a stove, battery or in direct sunlight!)
Software glitches. It is quite difficult to detect such a reason, but it can be solved by updating the system or resetting the settings to factory settings. Outdated versions of Android may have a bug or may no longer be supported (not receive bug fixes, security fixes).
Physical disorders.

If the device has been subjected to even minimal impact (fall, strong shock), then the problem may not appear externally, but contact failure may occur. This happens especially often if at the time of the incident there was a plug in one of the connectors (charger, headphones). You can determine the presence of such a violation by applying a slight force to the turned on smartphone. Compression of the housing or bending force leads to shutdown. The only solution is to contact the service center or check the contacts yourself.

If none of the proposed options reveals a problem with the device, it is better to contact a specialist. Specific procedures are most often inaccessible to the average user. Diagnostics, replacement of a failed part or flashing will allow you to return the device to normal functionality. To carry out all actions correctly, you must have special software and tools.

Question for experts: The Samsung Galaxy Ace 2 smartphone was discharged today, I put it on charge and put it down, after a while I picked it up, the phone is turned off, I turned it on, the initial welcome screen appears, then it turns on, the lock screen is displayed, information is displayed, that the phone is discharged and turns off, and this happens every time it is turned on. I was left switched off on the charger almost all day and it was of no use. I tried to remove the battery, but nothing. I think maybe it's the charger or not? Help please, what should I do? The phone is about a month and a half old...

Sincerely, Alexandra Polskaya

What to do if your Honor or Huawei phone keeps rebooting?

An unusable battery is one of the main reasons for such a failure. To study the power details, take it out of the gadget and study it in detail. If the batteries have bulges or any other damage, you need to throw out the battery and buy a new one. Bloated devices cannot be repaired. In some situations it is possible to extend their service life.

When starting Android

If your smartphone restarts every time it is activated, pay attention to the following methods. Perform a reset via Recovery. Login to Recovery differs depending on different brands. A popular way is to press the “Volume Down” and “Home” keys. After the Android icon appears on the screen, remove your hand from the volume. Next, click on the “Wipe data/Factory reset” button, and then restart your mobile. Deactivate the battery and wait a few minutes. Then insert the battery back.

How to enable dark theme on Honor and Huawei: setup and installation

When you turn on the camera

The Camera program causes reboots on older iPhones after updating iOS to the latest version. In addition, the cause will be software infection by viruses.

Launch an antivirus application and check the status of your mobile. The second option is to go back to the previous version of the system.

After activating GPS

Certain mobile phones reboot when GPS navigation mode is activated. The main nuances and solutions to this defect are posted below:

Old SIM. Some smartphones do not connect to SIM cards of some mobile providers. Replace the old plastic with a new one or visit the post office.
Memory card: SD – the card becomes a reset problem when GPS is activated. Remove the memory storage device from the gadget and check its serviceability.
Awkward steps when flashing the firmware: perform a Hard Reset if the mobile reboots after connecting the adapted version of the operating system.

When Bluetooth is turned on

A quick reset after enabling the file transfer option is a common problem on mobile phones. It is easy to fix the damage by pressing the Hard Reset key, but in this case all files are automatically deleted. Deactivate bluetooth and restart your mobile phone. Use the settings folder or control panel. Lower the notification shade and turn off transmission.

During a conversation

If the phone resets during a call, check the connection between the battery and the motherboard. Most likely, after prolonged use, a gap has developed between the battery and the connector. It can be removed by attaching the power supply to tape.

When launching applications

Certain applications perform reboots due to negative optimization or crashes during implementation. It is recommended to destroy unnecessary programs from your smartphone. Most likely, the problem is a malfunction of the operating system.

Wi-Fi management app

You can find and install the Smart WiFi Toggler app for free in the Google Play store. It will allow you to set up wireless Internet access. The bottom line is that the program remembers access points and automatically activates them at a convenient time. When the user leaves the access point, the mobile Internet is turned on, provided that the user has set such parameters. You can set up home and work access points. Of course, Smart WiFi Toggler turns off the wireless connection when the mobile device is out of range of the configured access points. You can also configure auto-connection and set individual parameters that will ensure longer battery life.

The problem where Wi-Fi on Android turns on by itself is quite common. It can be solved by uninstalling some applications, installing an antivirus on your mobile device, or returning the gadget to factory settings. In addition to solving the main problem, such actions can fix many other errors and free up memory. As a result, the autonomy of a smartphone or tablet based on the Android operating system will improve.

Sources

https://fishki.net/3240935-pochemu-smartfon-na-android-vykljuchaetsja-sam-po-sebe.html
https://tarifkin.ru/mobilnye-sovety/pochemu-telefon-sam-vklyuchaetsya
https://juicepost.ru/pochemu-sam-po-sebe-zagoraetsya-ekran-telefona/
https://besprovodnik.ru/pochemu-sam-vklyuchaetsya-bluetooth/
https://v-androide.com/instruktsii/wi-fi/postoyanno-vklyuchaetsya-wi-fi.html
https://WiFiGid.ru/android/sam-vklyuchaetsya-wi-fi-na-android
https://www.vamvpomosh.ru/sam_vklyuchaetsya_wifi_na_android.php
https://androidguid.ru/problemy/vklyuchaetsya-wifi-na-android.html
https://protabletpc.ru/advice/sam-vklyuchaetsya-wi-fi-na-android.html
https://nastroyvse.ru/opersys/android/vklyuchaetsya-wi-fi-na-android.html