If you are using an OPPO phone (ColorOS system) and a black screen appears, you can follow the following steps to troubleshoot:

1. If the phone is not filled with liquid, press the power button and The volume keys can be used normally. It is recommended that after charging for 15 minutes, press and hold the power button + volume up button for 12 seconds to force restart the phone.

2. If multiple applications have a black screen, it is recommended that you clear the background running programs and ensure that the phone's storage space is greater than 10% to avoid unsmooth operation or slow loading.

3. When the mobile phone system version is lower, there may be incompatibility between the application version and the system. It is recommended that you try to upgrade the mobile phone system to the latest version.

4. If this problem occurs after downloading a third-party application, it is recommended that you uninstall the third-party application and check whether it can be restored.

5. If a black screen appears on a single application, make sure that the phone system and applications are the latest versions. It is recommended that you "long press the application icon > application information > application permissions" to check whether the application permissions have been turned off. , enable application permissions.

6. If the phone can be turned on normally, but is stuck on a certain interface during the booting process, it may be a system problem. Please try to force restart the phone. Press the power button and the volume down button at the same time to enter recovery when the phone is turned off. mode, choose to clear system data and cache or format the device, restart and see if the phone can be turned on (this operation will clear the phone data). If you cannot enter recovery mode, it is recommended to contact OPPO customer service for processing.

7. If the power button vibrates when you press and hold the power button, but the display screen is black, it may be a screen hardware problem. Please contact OPPO customer service for help. If the above methods cannot solve your problem, it is recommended that you bring your mobile phone and purchase Go to the OPPO official service center with your machine voucher and have it inspected and processed by professional engineers.