How to restore Huawei's accidental setting of mobile phone information?

Hello, you mean that the ringtone will automatically change back to the original ringtone after you use it for a period of time, right? If yes, please check it in the following way.

1. If the set ringtone is not the ringtone that comes with the system, please confirm whether the ringtone file has been deleted or moved. Please reset it.

For mobile phones that support external microSD cards, if the set ringtone is stored in the microSD card, after the mobile phone is connected to the computer and the USB flash drive mode is turned on, the incoming ringtone will be automatically restored to the default ringtone, and will be automatically restored after disconnection. You can also move the ringtone file to internal memory and reset it.

For mobile phones supporting external microSD card, if the set ringtone is stored in the microSD card, please confirm whether the microSD card has been uninstalled. Please reinstall the microSD card and reset it.

2. Please make sure that the ringtones of both SIM cards of the mobile phone are customized, and reselect the ringtones of card 1 and card 2 in the ringtone settings. The menu path is Settings-All Settings-Sound.

3. Please confirm whether media storage is disabled: Settings-Application Management-All Media Storage. Please enable this program, otherwise the system can only provide the default ringtone. I hope I can help you.