What should I do if the power button doesn t respond and can t turn on on my Android phone?

Hello: Which phone are you?

You can try pressing and holding the power button + volume button down + volume button for three seconds at the same time to see if there is any response. Thank you.

It should be after the phone flashes the system, the bug that appears, you don't need to turn it on, you can brush it after restarting it into recovery

If there is such a bug in normal use, you should not be the only one, you can go to the forum to see if there is an answer.

It is estimated that the board is burned, you can return to the factory to take a look, and if you don't want to return to the factory, you can go to the repair shop to see it.

Android phone can't boot normally How to deal with it:

1. Press and hold the power button for more than 10 seconds to see if you can force it to turn on. If you are able to turn on your computer, please back up your important data and perform a factory reset or upgrade to the latest software version.

2. If you can't force it to turn on, please check whether the phone has power, there will be a charging indication when plugged in to the power supply in the empty power state, and it may not be able to turn on immediately when it is just charged, please continue to charge it for a period of time before trying to turn it on.

Fourth, for the boot has a reaction, but does not enter the system, it is recommended to enter the recovery mode to restore the phone to the factory and try again (recovery mode entry method: press and hold the volume down + power button to turn on).

If none of the above methods can force the device to start, it is recommended to go to a professional mobile phone after-sales inspection and repair.

First of all, it may be caused by the mobile phone system, and it does not turn on, and secondly, it may also be caused by the low battery of the system.

Is it out of power? If there is no power, it will not be turned on, so it is recommended to charge it.

Summary. The repair method of mobile phone power key failure is relatively simple, and the specific method is as follows:

What should I do if the power button of the mobile phone fails and I can't turn it on.

The repair method of mobile phone power key failure is relatively simple, and the specific method is as follows:

1. If the power button of the mobile phone fails, you first need to confirm whether the key response is normal after removing the protective case; 2. Then to confirm whether the screen cannot be lit after the automatic shutdown caused by the low battery, it is recommended to try again after charging; 3. If it still doesn't work, you need to press and hold for more than 15s to force the phone to restart or turn on to try. If you really can't do it, you need to back up the data in advance and bring the purchase invoice to the local after-sales service outlets for maintenance.

If the power button is not working, it may be that the phone has been used for a long time, and it is easy to be oxidized when exposed to air every day. At this time, the way to deal with it is to buy a bottle of 95% medical alcohol at the pharmacy first, remember to use a high concentration, low concentration has no effect, and then apply a cotton swab to the power button, and wipe it repeatedly on the power button, which will wipe off the oxidized substance on the surface. Finally, try to press the phone a few times repeatedly.

1. The boot line is abnormal: use an external power supply to supply power to the mobile phone, use the telephone meter to detect whether there is a change in the indication, if there is no change, it is likely that the boot line is broken or the boot button is not in good contact.

2. The power supply circuit of the battery is abnormal: use the external interface to supply power to the mobile phone, see if it returns to normal when it is turned on, if it is normal, it is determined that the power supply circuit of the mobile phone is abnormal.

3. The IC of the mobile phone power supply is abnormal: test the test point of the peripheral circuit of the power supply IC according to the circuit schematic diagram to see whether the test value is normal.

4. The system clock and reset of the mobile phone are abnormal: you can use the dual total oscilloscope to detect the CPU power supply of the mobile phone to check whether the waveform in the reset is correct.

5. Problems with logic circuits: that is, faults in mobile phone circuits, which can generally be solved by repair welding.

6. Software conflict: The installed software does not match the system of the mobile phone, which may also cause the mobile phone to fail to boot, you can connect the mobile phone to the computer to delete the program.

Method 1, 1, first, completely power off the phone, if you can, it is best to remove the battery and then put it on;

2. Then, press and hold the volume - do not release (PS: some models press the volume +);

3. Connect the phone to the charger, the English interface appears, you can release the volume button, wait for about 20 seconds, and the phone will automatically turn on.

Method. 2. If method 1 does not work, you can connect the mobile phone to the computer with a data cable, open the commonly used management software, and the mobile phone will be automatically recognized. In the [Tools] of the software, there is generally a [Restart] option, just click on it.