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How does vivo X9 always flash back? How to solve it?

It is recommended to try the following solutions:

1, restart the phone and try to open the program to see if this phenomenon exists.

2. Find the program in Settings-General/More Settings-Applications-All and try to clear the data.

3. You can try to update the system version optimization system: click Settings-General/More Settings-System Upgrade-Check the update immediately, download the upgrade package according to the prompt, click Check and Install, and the mobile phone will automatically enter the upgrade mode when it is restarted.

4. If it still can't be solved, I suggest you try to clear all the data, and click Settings-General/More Settings-Restore Factory Settings-Clear the data of the mobile phone-Reset the mobile phone (check the USB flash drive of the mobile phone). Clearing the phone data will format the phone, so you can back up the phone data, including contacts and photos, before this operation.