Began to turn off after turning off the phone. Why does the phone turn off by itself? possible causes and solutions to the problem

It would seem that a phone with a 100% battery charge should last no less than half a day, or even a whole day of hard work. But alas, no one is immune from problems with their gadget, and after a while, many users are at a loss to guess why the phone turns off when fully charged, given that they practically do not use it.

This happens with all modern devices, including devices running the android operating system. It is extremely problematic to understand immediately why the androyd behaves this way when fully charged. In some cases, even when charging is connected, the phone turns off. Let's see why this happens and how to deal with it.

• We will immediately mention that these can be system or hardware problems that can make themselves suddenly or through certain time. Most often, the cause is physical damage, which includes: falls, blows, strong pressure.
• Then there is the problematic battery. This includes soiling marks, damage due to hard hit or its complete wear, after several hundred charge-discharge cycles. Sometimes, which is enough to take measures to dispose of it and purchase new components.
• The charger needs to be checked. Due to inadequate supply of electricity, it is able to cause irreparable harm to the battery and gadget. And under the most deplorable circumstances, disable the motherboard of the device.
• Perhaps due to a system failure, the firmware suffered. This happens due to the installation of applications from an unprotected source or viruses getting into the internal memory.
• If a fully charged phone turns off or restarts on its own, one of the internal modules may be faulty. Discover it by outward sign fails, you will have to resort to a full diagnosis and subsequent replacement of the faulty part.
• Additionally, check the charging socket. Small debris or dirt could get in there, contributing to poor contact with the charger. Things are much worse if the smartphone has fallen and damaged the connector.

Not a single problem is complete without moisture getting inside the device. This happens both in direct contact with the liquid (falling into the bathroom, toilet bowl, puddle, beer), and changing temperature regime when from the cold street, that one gets in warm apartment, due to which condensation appears, which contributes to the oxidation of the contacts and disruption of the power controller.

Separately, check the lock button, which is responsible for turning the gadget on and off. Quite often, it turns out to be faulty and entails constant shutdowns and reboots of the device without the knowledge of the owner. Solved by the complete replacement of the mechanical module.

Solution

One of the worst options is to disconnect the chip on the system board of the device. This includes a memory card slot, power controller, or processor. In this case, the system will continue to work, but with periodic failures.

This happens after a strong blow. A damaged microcircuit needs to be resoldered, however, in order not to accidentally make a mistake and leave the phone inoperative, you need to carry out diagnostics, which is impossible without specialized equipment.

Replace battery

Having found that the battery is the cause of all troubles, it is worth replacing the battery immediately. The easiest way to do this is if it is a removable type. Otherwise, the phone will have to be disassembled, which, without some skill, can lead to new breakdowns.

flashing

After making sure that the software has failed, the gadget will need to be reflashed. Again, despite the instructions available on the Internet, an unprepared person will only make things worse by turning their favorite gadget into a “lifeless brick”. Seek help from a specialized service center.

Reset all settings

Well, a possible solution in case of a system failure will be a hard reset. Despite the simplicity of the operation, it restores damaged areas and allows you to return the device to its previous state. Be sure to back up your information before doing so. Transfer important contacts, photos and music to cloud storage or personal computer. This feature is by no means a panacea for all problems, and it rarely helps.

Conclusion

So, faced with the fact that your mobile device turns off even when the battery is fully charged, should push you to go to a service center. This applies to everyone who does not have specialized tools at home and has never repaired smartphones.

Only specialists will be able to conduct a full diagnosis and identify the cause of the malfunction, which does not allow your gadget to fully function.

Video

What to do if the phone turns off by itself? For starters, stop panicking as this is just an Android smartphone. If it stops working correctly, then you need to delve into either the software or hardware component.

Please note that old devices 5-7 years old begin to fail due to the impressive service life for the device. Remember that the gadget, in principle, is not designed to operate for more than 2-3 years, it becomes morally and physically obsolete, wears out and ceases to adequately respond to what is happening. Software is harder to find, the OS is no longer updated, and the characteristics do not allow most programs to run correctly.

Neither the top nor the budget gadget is immune from obsolescence of components. A modern device from the same Chinese manufacturer will give a significant head start to the flagships of 2011-2012, for which you paid a tidy sum.

Reasons why Android turns itself off

Why does my phone turn off by itself? It is dead and you put it on charge. In theory, after 15-20 minutes the device should start, but either this does not happen, or it goes into a cyclic reboot. It is not uncommon for a smartphone to turn itself off several times a day, while in standby mode, or during work / calls / games. There are enough reasons, so let's analyze the key ones:

• non-working power button;
• the battery has served its purpose;
• contacts are oxidized;
• a software failure has occurred;
• application conflict;
• mechanical damage;
• prolonged use;
• freezing.

Power key not working

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 hard on it or press it repeatedly, exchange your smartphone for a new one, or take it to a free service prophylaxis. The reason is a factory marriage. In older phones, the problem occurs due to "advanced" age. Each button has its own work-to-fail resource. Yours has obviously reached its limit. Contacts moved away, oxidation began, dust got in.

Recovery will not be cheap, because often you will be offered to change not only the membrane, but also the controller, diluting the procedure with mounting soldering. Often, the amount of restoration is not much different from the price tag for a new state employee.

Read about problem solving at Android phones on the site androproblem.ru - the best materials and helpful tips.

Battery

What to do if the phone turns off by itself, but the charge is full? The battery is probably out of date. To get started, try the following: leave it to charge for a day. If nothing happens, then there are several development options:

• the charger burned out;
• problem with the memory connection slot;
• the battery has served its purpose;

The first and third options are checked very simply: change the used component to a new one. True, on some smartphones the battery may be non-removable. In this case, a trip to the SC is provided. The same thing awaits you if the charging socket is either gouged, or clogged with dust, or oxidized. Only diagnostics will show the final verdict.

Contact oxidation

If you used the gadget with extreme caution and care, you are still not immune from oxidation of the contact base of the motherboard and other elements. Moisture can enter through environment, abrupt change temperature as condensation, and even from often carrying the phone in your hands in summer time. The palms sweat, sweat seeps into the seams between the lid and the speaker/microphone opening. The concentration is minimal, but the oxidation process is a long process.

First of all, clean the contact pad on the battery. If it is perfect in appearance, it does not interfere with walking on it with a sharp object, but very carefully. This is followed by drying with a hair dryer at minimum power so that the air flow does not spoil the internal parts. Putting the gadget on the battery is strongly not recommended - the device is simply not designed to work at such a temperature.

In the most critical cases, it is worth going to the master.

Software

The phone turns off by itself. Android is an open platform, so you can download any applications on it from both Google Play and external resources. Some get carried away excessively and do not understand that programs have begun to simply conflict with the file system, causing a constant reboot. Here, only the complete demolition of data, memory re-partitioning and flashing the gadget saves. Resetting to factory settings rarely helps.

If you do not know how to reflash the device - and do not think about doing it. In inept hands, it easily turns into a "brick" without the possibility of recovery.

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.

Mechanical damage

The most common cause sudden reboots - falling, hitting and "flying" 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 internal problems, fraught with a visit to the SC. The second point is a 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 only after the analysis.

Just in case, check all wireless modules for serviceability and shake the gadget a little. If something rumbles - carry it in for repair.

Moral obsolescence

The smartphone works properly for 3 to 5 years without cosmetic and overhaul if you have used it carefully. Techniques on Android began to be published since 2008, which means that the oldest one 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 a morally obsolete product that is just as expensive as memory. Get on such spare parts - serious problem even in major cities. Repairs will cost more than the cost of modern gadgets.

Working in the cold

Often, smartphones work very poorly in the cold, the capacitive type display suffers especially. It reacts to heat, so it often does not perceive touch with fingers - hands have to be systematically warmed in pockets or gloves. Read the user manual carefully. Many devices automatically turn off at -20 degrees and this is completely normal. It is better to carry them in the inner pocket of your clothes, not in your purse and in the pocket of your pants and jeans.

3.7 (74.29%) 7 votes.

In a situation where any device, not only on Android, spontaneously turns off, two reasons may be involved.

Why does android turn itself off? Involved in this trouble may be hardware problems or software failures. Hardware problems most often occur at the points of contact - this is a battery, a SIM card, keys, a detachable connection of the screen to the circuit board.

Also, breakdowns associated with iron occur due to overheating, specifically the video processor, most often the microprocessor. Software crashes are the result of turning off the android smartphone, or after flashing the Android OS, or if malware has been installed.

To fix a glitch on your own, in which a particular Android smartphone turns off by itself, you can try two methods.

The first way is to fix hardware problems.

After using a phone or tablet for a long time, contact points are disturbed. Oxidation occurs on the battery terminals and device connectors, or solder joints on the contact pads of the circuit board are destroyed.

This especially often happens after careless handling of the device: when it was thrown into water, doused with water, taken with wet hands, dropped on the floor, crushed in a pocket, knocked on the keys.

To try to cure yourself of a glitch in which the android turns off by itself, you need to open the back cover of the phone and remove the battery. Next, you need to clean all the battery terminals and each pressure contact of the connector on the phone.

Do not rub them with sandpaper, after that they oxidize even more intensively and the contact surface decreases due to the presence of grooves on the surface.
It is necessary to clean with a small screwdriver, on the end of which cotton wool soaked in pure alcohol or contact cleaner is wound. Contact cleaner is sold in auto shops.

In addition to cleaning, you also need to slightly straighten the pressure contacts on the phone so that they are pressed against the battery terminals with more force.

You do not need to disassemble the tablet to remove the battery. Because on tablets it is connected by a solder joint, and because of it, a hardware problem cannot occur. And other iron problems are difficult to figure out and fix, especially for a person without special education.

The second way is to remove all software errors.

Highly effective way, if previously done manually, not through standard update. But this method will not help if you got into the pre installed apps or operating system, and remove some or all of these software. Then only installing a licensed Android OS will help.

Try doing a hard reset. This procedure, perhaps fix the problem when the android turns off by itself.

Turn off your phone or tablet and enter the "Android system recovery" menu.

To do this, you need to use the following key combination:

• For tablets, the key combination is as follows: you must simultaneously hold down the power off and volume down keys for 10 seconds (for some models, increase the volume).
• For phones, the key combination can be similar to a tablet or like this: you must simultaneously hold down the power off, exit to the main menu (or camera), volume down (or volume up) keys for 10 seconds.

In general, for a particular brand, the key combination is unique.

When working in the "Android System Restore" menu, use the following prompts on the screen: highlight - this is the menu navigation key; select – menu item selection key.

In this menu, you need to move to the “wipe cache partition” item and select it. Next, move to the “reboot system now” action confirmation item and select it. After that, and the device will turn on again.

If the described action with deleting cache memory data did not help, then do a factory reset. However, at the same time, personal data stored in internal memory devices. To do this, select the “wipe data / factory reset” item in the system recovery menu and confirm the action.

In the end, if using these two methods you yourself cannot fix the glitch in which the android turns off, then contact the specialists at the repair shop.

The mobile phone has long ceased to be a luxury, while rapid development information technologies made it a necessity.

The capabilities of modern smartphones not only provide a constant connection of a person with the outside world, but also allow solving many everyday tasks. But what to do in the case when the phone that served faithfully began to turn off by itself? There are usually several causes and solutions to this problem.

Battery failure

Autonomous work of any mobile device depends on the energy reserve of its battery. Battery failure is a common reason why it becomes simply impossible to use a smartphone normally. To verify the presence or absence of this problem, you need to check the correct connection of the battery contacts by removing the back cover of the phone (if possible).

Otherwise, it is recommended to put the smartphone on a long charge - at least for a couple of hours. If after that the device still continues to turn off by itself, you need to replace the battery. Putting a removable battery on your own is not difficult, but in the case of a solid smartphone case, it is better to entrust this matter to professionals from the service center.

Software failures

The operating system of a mobile device is a complex mechanism in which dozens of applications operate. Typically, the last android versions are reliably protected from all sorts of failures in the work of programs, but no one is still immune from random errors. Installing some applications can lead to various conflicts with the file system of the smartphone, due to which it spontaneously turns off.

Also, the reason for this may be blocking the operation of the device. To fix this problem, you need to use . If they do not help, you will have to reset the device to factory settings through the settings menu.

Mechanical damage

Smartphone hardware has a limited lifespan, which is why some modules stop working properly over time. The failure of individual spare parts can occur not only due to long wear, but also due to a blow or fall of the gadget.

To make sure that the internal microcircuits are working, you need to check the integrity of the phone case by trying to bend it a little with your hands. Automatic shutdown smartphone after such actions indicates a breakdown.

Moisture inside the device can also cause various failures, leading to periodic inoperability. In this case, it is necessary to disassemble the device within a few days. If there is serious damage to internal components, you will have to visit a repair service.

Power button issues

Most modern devices are turned on and off by pressing a special key. If this button is damaged or stuck, you may lose control of the power function.

Also, the reason for the inoperability of the key can be an ordinary factory defect. It is important that it is unlikely that it will be possible to completely get rid of this problem without the help of a specialist.

Out of memory

Today, there are many heavy games and applications for Android, the normal operation of which requires high performance from a smartphone. Often, the simultaneous operation of several voracious programs is not the most in the best way affects device memory.

temperature fluctuations

The temperature conditions in which the smartphone is located during operation have a strong effect on its functions. Both overheating and severe frost provoke a loss of performance, as well as turning off the gadget.

The optimum temperature range for comfortable work mobile device is between 0 and 35 degrees Celsius. That is why you should not use the phone for a long time in the cold season on the street. It is also not recommended to leave the device under direct sunbeams or close to a heat source.

There are many reasons leading to the sudden shutdown of the smartphone. Given all the above tips, it is quite possible to avoid this problem. As you can see, some phone problems can be solved by yourself.

Buying a new smartphone these days is a memorable event. Especially if you become the owner of an expensive trendy gadget with a mass additional features. From now on, you will have to “shake off the dust from it” every day, so that God forbid you do not scratch its display or drop it on the floor. For this reason, many people prefer to buy themselves , which could be without fear put in your pocket and are not afraid that it can be stolen or it can break itself.

No matter how much you take care of your fancy smartphone from drops and bumps, no one is immune from the fact that in one of beautiful days it will run out of battery and turn itself off. There is nothing wrong, of course, in this, you just need to put the phone on charge and after 30 minutes the mobile phone can be used again. But it often happens that the smartphone is on recharging, and then automatically turns itself off. In some cases, it is not even possible to return the smartphone to working condition after such a shutdown, and sometimes after pressing on the power button it "comes to life", but after a while it turns itself off again.
There can be many reasons for the phone to turn itself off, but the most common are the following:
1. On/Off button not working. If your phone is still under warranty and won't turn on, it's best to take it to a service center and have it repaired free of charge. Often the cause of such a problem is a factory defect of the on and off button, which must be replaced. The button can also stop responding to pressing due to its venerable age, when its contacts moved away after numerous on and off. old phone it is not economically viable to carry it for repairs, because in order to restore it, the master will offer you to replace not only the button, but also the keyboard membrane and the controller, as well as to perform mounting soldering. Such repairs will cost you the same amount for how much you can buy a new budget smartphone.

2. Battery expired. If your phone periodically turns itself off, try leaving it to charge for a day. If charging does not start after connecting the smartphone to the network, the reason may be a damaged charging slot, an expired battery or a broken wire charger. This is checked very simply, you just need to put another battery in the phone or use a new charger.

3. Contact oxidation. Even if yours has not "bathed" in a bathtub or a glass of tea, moisture can get inside it after a sharp change air temperature or rain. For example, in winter, when it is very cold outside, the phone freezes, and at home it heats up and condensation forms inside it. In order to exclude contact oxidation phone due to moisture, try removing its battery and cleaning the contacts underneath. Even if they look like perfect condition, this does not mean that there are good contacts. Take a sharp thin knife and carefully clean all the contacts with it. Then try drying your phone with a hair dryer on the lowest setting. The air flow coming from the hair dryer should be slightly warm and not strong in order to avoid overheating of the plastic parts of the mobile phone.

4. Software failure. This type of breakdown can also cause some inscriptions to periodically appear on the smartphone displays, and then the device turns off on its own. A simple reboot of the phone in this case will not help fix the problem, you will have to reflash it. Refresh software mobile device you can do it yourself, but if you use an expensive smartphone, it is better to take it to the service center and entrust this work to professionals.

5. Installing new applications. If your smartphone began to "fail" after installing new applications from the Internet, then most likely they turned out to be incompatible with operating system your device, and this caused it to malfunction. In this case, first try restarting your phone: go to the "Settings" item and uncheck the "Quick Boot" item. Turn off the mobile phone and after a few minutes turn it on again, if it no longer freezes, then the installed applications can be left. If restarting does not fix the problem, you will have to remove them and update the software version if necessary.


6. Mechanical damage. Most often, the smartphone starts to turn itself off after falls and bumps due to mechanical damage to the printed circuit board and other elements of its filling. You can check whether the cause of the breakdown of the smartphone is serious by yourself by bending its case with your hands. If after such a man-made mockery your device turns off, then this indicates that there is serious damage inside it and it needs to be in a service center.

7. depreciation. Mobile phones usually work without problems for no more than 5 years, but if the year of manufacture of your smartphone is 2005-2009, then it is turned off due to its deterioration. In this case, you should not try to reflash or repair it, buy a new smartphone. It is unlikely that there will be spare parts for it in the workshop, and all this work will cost a lot of money.

8. Freezing. If your smartphone began to turn off automatically while walking on the street when severe frost then take a look at his instructions. Some smartphones do not work even at air temperatures below minus 25 degrees, so they must be carried in the winter cold in the inner pocket of clothing.