What's wrong with Redmi 8A's black screen flashing back?

Individual applications of mobile phones flash back. I suggest you:

1. Backup data to clear the data of the flashback program. Path 1: Settings-Application Settings-Application Management-Find Flashback Application-Clear Data (this operation will delete the application cache, such as chat history and game progress); Path 2: Setup-Application Management-Find Flashback Application-Clear Data (this operation will delete the application cache, such as chat history and game progress); (The operation paths of different system versions may be slightly different. )

2. After uninstalling the application, try reinstalling it. It is recommended that Xiaomi App Store download.

3. Upgrade the Android system based on a higher version to the MIUI system.

4. Make effective backup of mobile phone data (cloud service synchronization is recommended), and then try to reinstall the application after returning to the factory. The mobile phone that can't enter "Settings" can enter recovery mode and select "Clear Data" or connect Xiaomi Assistant to clear data;

If the above methods can't be solved, it is recommended that you conduct after-sales inspection.