What should I do if the main button of the mobile phone does not respond, the mobile phone is turned

If the phone keys are out of order, it is recommended that you:1If you cannot use the back button to go back to the previous interface or exit when running a program, it is recommended to click the home button to return to the standby interface and try to re-enter the program.

2.Turn off your phone and restart it.

3.If the back button, menu button, recent application button, and home button of your phone are not available, it is recommended to uninstall and delete the recently installed software.

If the problem persists, it may be a problem with the internal hardware, it is recommended that you bring the mobile phone three packs voucher and send the mobile phone to the nearest service center for the engineer to check the machine.

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.

The reason why the phone does not respond when the power button is pressed may be that the battery is out, or it may be that there is a problem with the phone, so you can charge it first.

Here's how to fix it:

1. If there is after-sales, go to the after-sales center to inquire;

2. If there is no after-sales service, go to the mobile phone repair shop for inspection.

Other workarounds:

1. In the power-off state, press and hold the power button and the side volume button down button at the same time to turn on the phone.

2. Press and hold the volume button down for about 15 seconds until the phone screen shows the Android icon and the phone enters recovery mode.

3. Tap the bottom right corner of your phone's screen, and a menu option will appear.

4. Press the lower button of the side volume button to display "Wipe Data Factory Reset", and then tap OK in the lower left corner of the screen.

Press the volume button on the side of the screen to display "yes--delete all user data" in the reverse color, and then tap OK at the bottom of the screen to erase all user data stored on the phone.

5. Press the side volume button and the lower button to display "Wipecache Partition" in the reverse color, and then tap OK in the lower left corner of the screen to clear the cache partition in your phone.

6. Press the volume button on the side to display "Reboot System Now" in the reverse color, and then tap OK in the lower left corner of the screen to restart the phone system.

Reboot it, my phone on/off key is so good.

Technical service support for maintenance service points in various urban areas of Shanghai, China

Shanghai customer maintenance service, providing a full range of maintenance service support for mobile phones, tablets, all-in-one computers and notebooks. On-site inspection On-site maintenance, we strive to provide customers with excellent maintenance services.

It should be that the key of the mobile phone is broken, and it is recommended that you go to a regular Apple repair shop to take a look

Chengdu customer maintenance service, providing a full range of maintenance services for mobile phones, tablets, all-in-one computers and notebooks. On-site inspection On-site maintenance, we strive to provide customers with excellent maintenance services.

It is possible that the mobile phone has to turn on and off the button is broken

Chengdu customer maintenance service, providing a full range of maintenance services for mobile phones, tablets, all-in-one computers and notebooks. On-site inspection On-site maintenance, we strive to provide customers with excellent maintenance services.

2.If there is a problem with the system itself, the system can be upgraded or the factory settings can be restored;

3.If the mobile phone is flooded and the cable or related chips are damaged, so the buttons do not respond, you can go to the mobile phone store to reset the button function, usually at a price of about 50 yuan;

4.If there is dirt under the button, you need to disassemble the phone, and then clean the debris around the button with alcohol, you can contact a professional maintenance personnel for repair.

Mainly due to the following reasons:

1. If the system is unstable, or the system software function is not normal for a long time, it can be solved by completely clearing the system data and user programs.

1. Press and hold the volume down button + power on button at the same time in the shutdown state.

2. The boot interface appears, release it, and enter the recovery flashing tool for a while.

3. Through the volume up and down, select wipe data, OK (the volume button is selected up and down, and the power button is OK), the option appears, and yes is selected.

4. Click Wipe Cache after returning to the menu automatically until it automatically returns to the main menu.

5. Select reboot and reboot.

If it is a Chinese menu. It's the same with choosing to perform data purging and emptying the cache, respectively.

Second, if the above methods cannot be solved, it is a hardware problem, and generally the mobile phone will have such a problem. You can only find maintenance personnel to solve it.

If the mobile phone cannot enter the system page after booting up, and the screen is stuck or frozen, it is recommended to:

1.Please press and hold the power button and the down volume button at the same time for more than 7 seconds to restart the device; If it is a mobile phone with a removable battery, please press and hold the power button for 8-10 seconds to restart the machine, if it does not work, please turn off the battery and reinsert it.

2.If the problem persists after restarting the machine, it is recommended that you bring the purchase receipt, repair card, and machine to the Samsung service center for inspection.

Hi! If you have backed up your data before, or there is no data in your phone that needs to be backed up, it is recommended that you try to enter recovery (turn off, press and hold the volume up + power on button to enter recovery mode) to clear all data, do not restore data for the time being after booting, see if it can solve the problem, if it still can't be solved, it is recommended that you try to brush the line to the latest development version.

Please flash according to the flashing tutorial, and the sixth way is line brushing:

Nokia is still easy to disassemble, remove the battery, disassemble the phone, soak a little alcohol in a soft cotton cloth, wipe the dirt on the keypad and the motherboard, dry it and install it, the slow response may be too much. Hope to adopt.

There are many reasons for the unexpected stop of the process,It is normal for the intelligent machine to crash or something,There are many unexpected stops of the process,In this case, the landlord can restart the machine,If it occurs repeatedly, the landlord can restore the machine to factory settings,And install the relevant software of QQ mobile phone housekeeper or 360 mobile phone guard in time,If the above methods can not solve the problem of the landlord, you can consider flashing,System problems can be solved!

Hope it helps!