I am sure that among the readers there will definitely be those who have encountered such a problem - the phone turned off at one fine moment and does not turn on anymore. Or those whose mobile phone periodically turns off spontaneously. And for the lucky ones who have not encountered such troubles, it will be useful to know what to do in such cases.
Let's figure it out possible reasons such malfunctions, using the example of the following situations:
Situation No. 1
In the evening, when you came home, you put the phone on charge, and in the morning you removed the phone that did not turn on from the cable. You are in shock. You take the battery out of it, insert it back - nothing changes. There is no reaction to the charger. What is the reason?
1. Before you panic, check if your charge has burned out. To do this, take any other phone and make sure that the charge is on. If not, then you're in luck - just use a working charger. A similar problem can be with the cable.
2. If everything is OK with charging, then it also gets upset early - the option of the so-called "deeply sat down battery" remains.
What it is? Normally, the battery charge level ranges from 3.6 to 4.2 volts. Moreover, the manufacturer calibrates the device in such a way that a battery voltage of 3.6 volts corresponds to 0% charge indication, and 4.2 volts, in turn, to 100%. When the phone is properly calibrated, when the minimum battery level is reached, the power controller will turn off the device, and when the power button is pressed, the indicator will be displayed complete discharge. If you put the phone "up to the stop", and then, after a full discharge, start the device several times, "distorting" the battery, the phone may be discharged below the permissible minimum (3.6 volts). And a conventional charger will not be able to charge it in this state.
At home, solving the problem of a "deeply dead battery" is problematic, but possible. To do this, remove the battery of the phone, connect the charger and, holding the power button, insert the battery. If the phone's screen lights up and the charge starts, you're in luck. If not, you will have to seek help from a specialist who will charge the battery on a special power supply. Even the smallest workshop must have such equipment, and even the most inexperienced craftsmen are familiar with the “battery start” procedure.
3. Another reason for “not turning on” without responding to the charger may be a broken phone socket. In this case, the device starts after charging the battery, for example in a service, but after it is completely discharged it cannot be charged and turned on again. Breakdowns like this usually develop gradually. Most likely, the phone already had problems with charging, but they were successfully solved by a cunningly connected cable (upside down, pulled with a clothespin, etc.) But at one “wonderful” moment, all your know-how stops working and the charging socket simply breaks off fees.
Unfortunately, it is very difficult to solve such an issue at home, and most likely you will have to contact the service. Here it is important to understand that if you have been torturing both yourself and your phone with all sorts of “devices” for a long time, then it is quite possible that the broken socket has already caused trouble on the board (for example, it has torn off the elements adjacent to it). So you shouldn’t delay with such a breakdown.
And further. If you have already returned your phone for service, be sure to request that the replacement part be returned to you after repair. Many “masters” are too lazy to change the charging socket and simply solder the old one. Which doesn't solve the problem at all. They only eliminate the consequence - the severed nest, but forget about the root cause - bad contact this same socket with the charger.
Situation No. 2
Your phone was fully charged, you were using it and it went out right before your eyes. The reasons may be the following:
1. The problem may be trivial dead battery. When using the phone, dust gets into the battery compartment. Small particles of this same dust fall asleep between the battery contacts and the contact block of the phone, creating a dielectric coating during friction. At one point, its quantity may reach its critical minimum and power simply stops flowing to your phone.
In this case, to turn on the phone, you need to remove and reinsert the battery. If it helps, take an eraser and carefully - so as not to damage the contacts - wipe the contact groups on the phone and on the battery. Using vodka, cologne or even medical alcohol for cleaning is strictly prohibited, because even pure medical alcohol contains 4% water.
If the manipulations carried out did not give the expected result, then it is worth checking how tightly the battery fits in the battery compartment. If there is play, press the battery with a piece of cardboard so that it is in tight contact with the terminal block.
2. What follows non-working button inclusion. Let's say you talked on the phone, ended the call, locked the screen with the power button, but couldn't unlock it. Visually, you see a phone that does not turn on, which does not react in any way to the power button. You juggle the battery, try to start it again - zero response. You make a control call to your previously disconnected phone and the call goes nowhere.
How to find out that your power button is broken and understand the reason for its malfunction? This problem is determined by placing the phone on charge. If the charging indication appears, but the phone still does not respond to your efforts to start it, it means that with a high degree of probability the button has died. The main causes of such breakdowns are mechanical damage, moisture ingress, natural wear and tear and, of course, manufacturing defects.
Unfortunately, fixing the power button at home is extremely difficult. Most likely you will have to resort to the help of specialists.
3. Proximity sensor. This sensor is triggered during a conversation when you put the phone to your ear, blocking the screen from accidental presses. If it breaks after making a call, the screen goes dark and does not light up even after you remove the phone from your ear. The phone continues to think that you are talking on it. If you don't pay attention to the fact that the voice of your interlocutor is still coming from the speaker, it may seem that the phone is frozen or turned off. This kind of breakdown often occurs after unsuccessful repairs. touch screen in non-specialized service centers or after the phone has been dropped.
To make sure that this particular sensor has failed, just wait until they hang up on the “other end of the wire”. If after the end of the conversation the display lights up again, it means that your phone has been diagnosed.
Repair of the proximity sensor is possible only at a service center.
4. "Flying off software ". Probably the most common breakdown of a phone. Well, if not the most common, then certainly the most favorite. Remember the notorious: “it’s buggy - you need to reflash it,” which, I’m sure, you yourself have used more than once.
Unfortunately, updating your phone's firmware is not a panacea. Especially if the device does not turn on. But when is it worth taking up reprovisioning?
- if the smartphone freezes during use, and after “jerking” the battery does not respond to the power button
- The phone does not boot beyond the splash screen
- the phone reboots cyclically, reaching the same place during the startup process
In the event of a software failure, all these symptoms are permanent. If the phone sometimes starts, sometimes it doesn’t, you need to think about a serious hardware failure.
5.Phone hardware failure caused by failure electronic components. Of course, diagnosing such faults should be carried out under service conditions.
Situation No. 3
The most unpleasant cases are when you yourself caused the device to break down.
1. Phone drowned or flooded. In such a situation, immediate intervention by a qualified specialist is required. The only way you can be useful is to turn off the power to the device as quickly as possible, do not try to turn it on, much less charge it. Please know that even a phone that is well dried at home runs the risk of becoming a “key fob” if power is given to it. I think not everyone has isopropyl alcohol, an ultrasonic bath, Soldering Station and a binocular microscope, so leave such repairs to the professionals.
What measures can be taken if the phone drowns far from civilization, I will tell you in the next article - “What to do if I drowned my phone.”
2. You dropped the phone and it stopped turning on. This is due to mechanical damage to the soldering, rupture of surface tracks or, even worse, an interlayer defect system board. Just like moisture, such breakdowns are considered complex and cannot be fixed at home.
If problems arise with a wet gadget, do not connect it to the mains and stop pressing the buttons. as soon as possible and only then follow the advice in this article.
If you are sure that the inside of the smartphone is dry, feel free to continue.
1. Force restart your device
Your phone may be turned on but just frozen. In this case, the screen may be dark and not respond to any actions. Therefore, first try restarting the device using the hardware keys.
How to Force Restart iPhone
On iPhone SE, iPhone 6s, iPhone 6s Plus, and older, press the Home key along with the top (or side) button for 10 or more seconds before the Apple logo appeared.
On iPhone 7 or iPhone 7 Plus, press the Side key together with the volume down button for 10 or more seconds until you see Apple logo.
On an iPhone 8 or iPhone 8 Plus, hold and immediately release the volume up key and then the volume down key. After that, press and hold the Side button until the Apple logo appears.
How to force restart your Android smartphone
Press the Power button and Volume Down key at the same time and hold them for 10-15 seconds. If successful, the device will reboot automatically or display a menu on the screen in which you will need to select the restart command.
Some Android smartphones can reboot using other buttons. If the device does not respond, search the Internet for a key combination to restart your particular model.
2. Take out the battery and put it back
If your phone has a removable battery, remove the cover and remove the battery from the device. Wait at least 30 seconds and put the battery back. Then try turning on your phone in the usual way- using the power button.
3. Put your phone on charge
Connect your phone to a power outlet using the original charger. If the charging indicator does not appear on the display within an hour and you cannot turn on the device, check the integrity and cleanliness of the connector, as well as the condition of the power cable and adapter. If possible, try different outlets, replace the cable and/or adapter.
4. Reset the device to factory settings
If after trying to turn on the screen the screen lights up, but the device does not boot properly, try restoring the factory settings using the hardware buttons.
During a system reset, you may lose personal data that was not synchronized with the server. Don't do this if you're afraid of erasing important information.
How to restore original settings on iPhone
Connect your phone to your computer with a cable and launch iTunes. Then do a forced restart iPhone(see point 1). When you see the Apple logo, continue to hold the buttons until recovery mode appears on the smartphone screen.
After this, a window with further instructions should appear on your computer monitor. Click "Update" and follow the system prompts.
iTunes will download the correct software for your phone. If this process takes more than 15 minutes, the iPhone may exit recovery mode. In this case, press the buttons again forced restart and hold them until the machine returns to this mode.
If the update works, the phone can turn on without resetting the system. If not, then in the iTunes window, click "Restore" to restore the factory settings.
How to restore original settings on an Android smartphone
Make sure your smartphone is turned off and try the following combinations to reset:
- volume up key + power button;
- volume down key + power button;
- volume down key + volume up key + power button;
- volume down key + power button + home key.
You need to hold down all the keys at the same time and hold them for about 10-15 seconds. After that, the screen will display special menu, in which to choose Recovery item and then the command Wipe data / factory reset. If you don’t see this command in Recovery mode, hold down the power button and momentarily press the volume up key.
After these steps, the smartphone should return to its original settings within a few minutes. If none of the key combinations work or you don't find necessary commands V service menu, look for reset instructions for your device model.
Many of us have encountered a problem when a smartphone or tablet suddenly stops turning on or responding to commands in any way. Smart devices do not last forever; a gadget that is truly reliable in all respects has never been created. Manufacturers are forced to reduce phone production costs by using less expensive materials and components to reduce the cost of gadgets. And sometimes this leads to problems with the device.
Why doesn't my Android tablet or smartphone turn on or charge?
If your Android device malfunctions, there is no need to panic and immediately run to the store for a new smartphone. Statistics show that in most cases your device can be cured at home and with minimal costs. Of course, if the cause of the breakdown was not a fall or water getting inside.
The reasons for the failure of Android devices are divided into two types: hardware and software failures.
Hardware breakdowns
Hardware breakdowns - This physical malfunctions due to which your tablet or smartphone refuses to work. These could be problems with the battery, charger, mechanical damage from impacts and water, even unprofessional assembly - poorly soldered contacts on the circuits, weak sizing, etc.
The first thing you should check is the charger cable. It is the most vulnerable link in the charging chain of a smartphone or tablet. Try using your cable to charge another compatible device. If the charge increases, the problem is with your device. If not, the output may not be working. electrical network: Try a different outlet. If this does not help, you must repeat all the procedures with another cable.
The charger cable must be intact, completely insulated, without visible defects or obvious bends.
An example of what a faulty charger cable looks like
Also pay attention to the connector for the charger. Contact for recharging the phone should not interfere with dust and small debris. It is better not to use iron objects for cleaning, as they can scratch the contacts - a cotton swab or brush is best.
So, after performing the above steps, it becomes clear that the fault is not in the charger. operating room devices Android system They have a small defect when they are completely discharged to zero - they cannot be turned on. Try leaving the phone to charge for several hours and repeat the power-on procedure. Hold down the power button a little longer than usual.
Software breakdowns
Software failures manifest themselves in low-quality software, an untested uncertified system update, or a game that led to critical error in system; It could also be errors in the firmware and other reasons.
Before taking your gadget for repair, you can try resetting the settings in Recovery mode. It is possible that a software error is to blame.
What's happened Recovery mode? Essentially, this resets all your data and returns it to factory settings.
These steps will allow you to roll back all changes in your phone to the moment when you bought it and started using it, which means that in this way you can erase all possible software errors that were allowed while working with the device - downloading and installing applications, downloading multimedia, etc.
Video: Factory reset on an Android smartphone
Why the tablet turns on but does not boot completely: possible reasons and what to do
There are several main reasons why this problem occurs when the device does not boot completely. Let's highlight the most common ones.
Phone memory completely full
When the memory of a phone or tablet is completely full, it will turn on sooner or later, but it cannot boast of performance. In this case, it is recommended to clear the memory of unnecessary files:
- delete unnecessary applications or move them to a memory card (microSD), if you have one;
- delete or move photos, videos and music files to a computer or memory card;
- with help special programs (Clean Master, CCleaner, Cache Cleaner Easy) clear the cache memory;
- reboot device.
Firmware error
It is not uncommon for problems to arise during the update or flashing process that lead to unpleasant consequences. The most correct thing in this case would be to reset the factory settings as described above or through “Settings”.
Video: Resetting settings on an Android tablet
Mechanical damage
If the problem is mechanical damage, then the user cannot fix anything. Only the intervention of a technician from the service center will help here.
Other problems with turning on an Android tablet or smartphone and ways to solve them
There are several other options for problems related to turning on your Android device.
Let's say your phone or tablet is charging, but categorically refuses to turn on. If vibration occurs when you try to turn it on, then the phone itself is fine, but the display is not responding. Perhaps the contacts have come loose or the screen itself has broken. If the Recovery menu is also not shown, you need to contact a technician for hardware diagnostics.
If it doesn't turn on new tablet, instructions are the same as above. Just don’t need to reflash it, because in this case the warranty disappears. If your device does not turn on immediately after purchase, best solution it will be refunded immediately.
If, before you stopped responding to commands, your smartphone or tablet had charging problems (the battery was discharged too quickly, the device turned off when fully charged), then you will have to replace the battery.
And do not forget about the problem with the power button. Your device may be in good working order, but a faulty power button can paralyze your gadget. Repairing a button is not too expensive, but it should only be done by a professional with special skills.
How to prevent similar inclusion problems in the future
- No one is immune from breakages and bumps, so no matter how carefully you treat your smartphone or tablet, the best thing for security is to sync data with Google+ or another storage you trust.
- Do not install applications and games from unknown sources to your device. Best to use Play Market. If you cannot do without installing programs from unofficial sites, read carefully technical description and reviews for the apps you want to install.
- Avoid physical damage especially while charging the battery. Use protective covers, they will mitigate the effects of impact.
Do not despair if suddenly your smartphone or tablet fails. If the problem is not mechanical damage and not in the charger, in most cases you can fix it yourself and use it safely. Reflashing should be decided as a last resort - if no other methods help, and guarantee period device has already expired.
If the phone does not turn on, then there is no use for it. There can be many reasons. In some cases, it will be possible to solve the problem after spending a few minutes, while in others you need to contact a specialist.
Today we will talk about what to do if the phone does not turn on. Let's look at the most common cases, find out how to deal with problems, fix and turn on the device.
Low battery
Very often, the phone stops turning on due to a dead battery. The devices consume a lot of energy, and high-capacity batteries Not available on all devices. So what's the problem fast discharge Batteries are extremely important today. Some Cell phones have an unpleasant feature - when the battery is very low, the device stops responding to connecting the charger.
What to do in such cases? Use a frog charger, which allows you to charge any battery by removing it from your smartphone. Just don't mix up the contacts. Recharge the battery for 10-15 minutes, then return it to the device.
Charger or connector malfunction
It often happens that the cord frays. In this case, it is enough to purchase a new charger. Sometimes the connector in the device itself becomes loose, falling off the contacts. If you do not have soldering skills, take the device to a service center. There, for a certain amount, the device will be restored to functionality.
Phone frozen
If the smartphone does not turn on, it could freeze corny. To revive the screen, use the old method of removing the battery and replacing it after a few seconds. Some manufacturers make the battery non-removable, but such devices have special button, clicking on which will reset.
The power button is broken
Some models Power button very vulnerable. The device was dropped and it broke. In this case, you will have to take the smartphone to the workshop. First try connecting your smartphone to your computer via USB (some models are turned on this way). This is a temporary solution, but, although not for long, it will help.
Software glitch
Sometimes the system stops booting. Why might this happen? The main reason is experiments with software. It happens:
- you interrupted the firmware process by accidentally pulling out the cable;
- tried to install software not from your phone model;
- tried to update the software, but did it incorrectly.
What to do in such a situation? You can resort to resetting the settings to factory settings (each phone model performs this procedure differently). If the device does not respond to anything and has become a “brick,” you can try to restore it through a computer using special utilities. If it doesn’t work out, go to the service center.
Everyone should know what to do if Android won't start. All the methods proposed below do not require additional technical knowledge and cannot harm operating system or the device itself.
The Android operating system is not only the most popular in the world, but also very simple, convenient and reliable. However, any modern device sooner or later it breaks down or starts to work not quite correctly. Such an unfortunate incident is upsetting and can seriously damage your nerves. There are times when the problem is serious and only a specialist can help. But before you go to the service center, you should try a few simple techniques, which can completely revive a smartphone.
Battery or charger
This may sound trivial, but more than half of the problems with turning on Android are related to the battery or charger. It's about not that you simply forgot to charge your phone, but about more global reasons.
With prolonged and active use of a smartphone, its battery gradually wears out. There comes a moment when it is discharged to such an extent that the ordinary network adapter can no longer help her.
If the phone model is old and collapsible, remove the battery and use the “frog” device. This is a charger that provides a more powerful charge and can save your phone for a while.
Photo: Frog for charging batteries
Owners of one-piece and non-separable models should not experiment at home. If you suspect that the battery may have failed, contact a service center to have it replaced.
The charging AC adapter may also be causing the problem. New charging device may not be original or compatible with this smartphone. This means that the battery does not receive energy during charging, and the android simply cannot start. In old chargers, contacts come off, wires break, etc. Therefore, it makes sense to try charging the phone from a different adapter.
Hardware problems (phone freezes)
It may happen that the phone is not turned off at all, but is “stuck” with the screen turned off. It’s worth figuring out what to do if Android doesn’t start due to freezing.
All procedures will be aimed at maximum activation and restart of the device.
If the phone has a removable cover, remove the battery for a couple of minutes, then replace it and turn on the device. Such simple manipulation often gives good results and returns the smartphone to normal operation.
With more modern models the situation is a little different, but there is nothing complicated here either.
If, after a standard single press of the power off or lock button, the phone does not turn on, hold down this button for 10-15 seconds. After this, the screen may light up and the phone will continue to work.
The second way to reboot will be the so-called “ forced reboot". To do this, you need to find the reset button and carefully press it with a needle, paper clip or toothpick. In all models it is located in different places, but it looks almost the same. If you can’t find the reset button, open the instructions for your phone.
Photo: Reset button on the phone 
Photo: Reset button on a Sony smartphone There is another simple method that can “stir up” your phone. Connect it to your computer via USB. By detecting a new connected device or power source, the smartphone can wake up from its sleep mode.
Software problems
If none of the above methods help, your last chance to turn on the phone yourself will be full reset settings (in technical circles it is called).
There are also several methods and options here.
First, let's consider a situation where the phone still turns on, but does not work correctly and the android constantly hangs.
When you return to factory settings, absolutely all information will be deleted and the phone will become just like new. Therefore, if possible, be sure to back up all data. New models in their menu already have such functions as “data backup”, “ backups", and also then full recovery data. Information can be copied to any existing account, Google Drive or to the cloud.
Photo: Backup on the phone It is also possible to copy all data to a PC or laptop when USB help cable or, for example, a program Share it (Download). It is worth remembering that contacts from phone book will be saved in one of the folders as a .vcf file.
To reset the settings, go to “Settings”, select “Privacy” (if Android version is 2.2 or lower), and then “Reset settings”. IN latest versions go to “Settings”, select “Backup and reset” or “Backup and reset”, then click on “Reset”, “Reset settings”, “Reset tablet PC” or “ Master reset».
Photo: Resetting your phone 
Photo: General reset of phone settings 
Photo: Resetting your smartphone 
Photo: Restoring and resetting your phone When the phone is turned off and it is not possible to turn it on, you must simultaneously press the volume up button and the power button (on some models the volume button, the Home button and the power button). The Recovery technical menu should appear on the screen. You need to select the line wipe data/factory reset (down-up control is carried out using the volume key). Then click on Yes, delete all user data.
Do not forget that for a full rollback to factory settings, you need to clear the entire cache and SD card. To do this, you can go to “settings”, “memory”, “clear SD” or clear it immediately upon reset by clicking on wipe cache partition.
Photo: Recovery menu Important nuances of resetting settings
There are several very simple ones, but important rules that must be followed. For example, during all operations with a smartphone, it must always be connected to charging. Then the phone will not turn off at the most important point, ruining the entire setup process.
If you plan to reset the settings to factory settings in advance, you need to “overclock” the device’s battery. To do this, first discharge it until it turns off, and then fully charge it. This will ensure correct work battery.sys file.
Since all phones are very different in interface and Android firmware, some users experience certain difficulties during the procedure. Don’t worry, be calm and read every menu name very carefully. If the smartphone model is very new or rare, it is better to study the instructions for it or go to the official website.
Problems after factory reset
Unfortunately, it is quite possible that the Android will not turn on after resetting the settings. You should again press the familiar volume up, power off and Home buttons and hold for 10 seconds. A menu will appear Recovery mode, select the “wipe” item, confirm your decision by pressing the Home button.
In a collapsible phone, remove the battery; under it there is a factory reset button. After pressing it, the settings will be reset again and the phone will turn on.
If the advice does not help, be sure to contact a service center to reflash the software.
conclusions
The tips listed are safe and quite effective. In most cases, with their help you can return the smartphone to normal and correct operation. You don’t need to rack your brain for a long time about what to do if your Android doesn’t start for one reason. In the case when home diagnostics did not give positive result, you need to turn to professionals. The cause of the failure may be serious, for example, completely faulty software, problems with the matrix, or other internal damage.
Dear readers! If you have any questions or comments on the topic of the article, please leave them below.
