Lenovo a820t mobile phone can't set the ringtone outside the system, but it is still the ringtone of the system. What is the reason?

I'm sorry for the inconvenience.

If you can't customize the non-system ringtone file or set it, it will automatically return to the default. I suggest you try to confirm and operate the following contents to see if it can be improved:

1. When this problem occurs, please confirm whether the PC is connected to realize the USB flash drive function. If there is, it is normal, because when the USB flash drive function is realized, the media files of the fuselage are being read and used by the PC.

2. It may be caused by some third-party software conflicts. Uninstall recently installed suspicious software.

3. Confirm whether the customized ringtone media file is stored in the external SD memory card. (If there is a built-in memory card in the phone body, it is recommended to move it to the built-in memory card in the phone body as far as possible) It may be related to the compatibility of the SD memory card used, or try to replace other SD memory cards for testing.

4. Back up the important information of the fuselage, restore the factory settings of the mobile phone (Settings-Backup Reset-Restore Factory), and see if it can be solved.

If the problem still exists, it cannot be effectively solved. We suggest that you take the time to go to the local Lenovo after-sales service center and let the engineer help you detect and solve it.

You are welcome to contact us at any time or visit Lenovo Lewen Bar () for consultation and understanding.