Flashback can be fixed in the following ways:
1, try to restart the software.
Press and hold the software icon on the desktop-application information-to stop forcibly, or end the software in the background and then reopen it.
2. Upgrade the system and software to the latest version.
The new version has improved compatibility and stability. You can try to upgrade the system and check to upgrade to the latest version in the app store or software.
3, check the software compatibility
If it is a third-party software flashback, you can search for the software in the app store to see if it is compatible with the latest version of the mobile phone, or compare it with the same Android version of the mobile phone. If the app store prompts incompatibility, or similar mobile phones also have this problem, it may be the application itself. Suggest consulting software customer service to find a solution.