Why can t Samsung A9 turn on after restarting, what s going on?

The main factors that the mobile phone cannot be turned on are the battery, mobile phone software, and hardware that will cause the failure to turn on. We recommend that you perform the following steps:

1. Charge with wire for a period of time and try to turn it on.

2. Take out the SIM card and SD card at the same time, and then press the power button for more than 10 seconds to test whether it can be turned on.

3. If you can enter the boot interface, but your phone cannot enter the home page, please restart your phone to try. The operation steps are as follows: Press and hold the power button and the down volume button at the same time for more than 7 seconds to restart the device.

Press and hold the power button for 8-10 seconds to restart the phone).

If it still can't be turned on normally, there may be a problem with the system program or hardware, and it is recommended to send the phone to the nearest service center for testing.

If your Samsung A9 phone can't enter the system after upgrading, it is recommended:

1.Reboot the machine: Press and hold the power button and the down volume button at the same time for more than 7 seconds to restart the device.

2.If it doesn't work, try to restore factory settings after entering safe mode: When the Samsung logo or carrier screen appears on the boot screen of the machine, press and hold the volume button down and do not let go to enter the safe mode, and then back up the data in the machine and restore the factory settings.

3.If the machine cannot be turned on, it is recommended to connect the machine to the charger and try to turn it on again.

If the problem persists, it is recommended that you bring the purchase invoice, repair card and machine to your local Samsung service center for professional engineers to help you test.

If the phone cannot enter the system after upgrading, it is recommended:

1.Reboot the machine attempt: Press and hold the power button and the down volume button at the same time for more than 7 seconds to reboot the device2

If it doesn't work, try to restore factory settings after entering safe mode: When the Samsung logo or carrier screen appears on the boot screen of the phone, press and hold the volume button and the lower left button will not let go (some phones will enter the safe mode by pressing and holding the menu button in the lower left corner) will enter the safe mode, and then back up the data in the phone and restore the factory settings.

3.If the phone cannot be turned on, it is recommended to connect the phone to the charger and try to turn it on again.

If the problem persists, it is recommended that you bring the purchase invoice, warranty card and mobile phone to the local Samsung service center for professional engineers to help you test.

If the mobile phone cannot enter the system page after booting, and there is a stuck screen and a crash, it is recommended to:

1.Press and hold the power button for 8-10 seconds to restart the machine. If the built-in battery is dust-resistant, 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.

2.If you can access the system, please check whether the mobile phone has a system update push, if so, please upgrade the machine to the latest system version.

3.If it doesn't work, please back up the data in your phone and try to restore the machine to factory settings.

If the problem persists, it may be a problem with the system program of the mobile phone, please bring the purchase invoice, package type early repair card and the machine to the Samsung service center for inspection.

Depending on the situation you described, it is recommended that you follow the following method:

1.It is recommended that you press and hold the volume down button + power button of your mobile phone for 8-10 seconds to observe whether the machine can be turned on normally.

2.It is recommended to take out the expansion card and SIM card and click the power button again to try to power on.

If the problem persists through the above methods, please bring the purchase invoice, repair card and machine to the Samsung service center, and the engineer will check the machine.