What should I do if my mobile phone has a black screen?

If you use a one-plus-one mobile phone and a black screen appears, you can follow the following steps to troubleshoot.

The battery is dead.

If you press the power button for a long time, the phone will always be in a black screen state, and there will be no response at all, or it will be turned off directly after not using it for a long time, or some abnormal conditions may cause the phone to lose power. If the battery is exhausted, you can try to charge it continuously with the original charger for more than 30 minutes, and then try to turn it on.

Screen problem

If pressing the power button for a long time vibrates, but the black screen on the display may be a screen problem, please contact Yijia customer service for help. You can also go to the offline service center for repair or choose to send it for repair.

System problem

If the phone can be turned on normally, but it may be a system problem to get stuck in an interface during the boot process, please try to restart the phone forcibly. Press the power button and the volume down button at the same time in the off state to enter the recovery mode, choose to clear the system data and cache or format the device to see if the phone can be turned on after restarting. (This operation will clear the data of the mobile phone) If you can't enter the recovery mode, it is recommended to contact customer service for processing.

Forced shutdown

If the screen of the mobile phone is abnormal (black screen, white screen, blue screen) or crashes, it may be necessary to forcibly turn it off before turning it on. Please press and hold the power button and the volume plus key 10 seconds to force the shutdown. If the problem can't be solved, please contact IKEA customer service for help, or you can go to the offline service center, and the outlet engineer will detect and handle it for you.