Black shark 4s bell is not normal

Does the subject want to ask, "What can be done about the abnormal 4s bell of the black shark?" The method is to check the ringtone settings, check the ringtone file, and empty the cache.

1. Check the ringtone settings: enter the phone settings, find the "sound and vibration" or "sound" option, and then check whether the ringtone settings are correct, whether the volume is turned on, and adjust it sufficiently.

2. Check the ringtone file: Check whether the ringtone file is damaged or incomplete. You can try to change other ringtone files for testing.

3. Clear the cache: Find the "storage space" option in the phone settings, then select the "clear the cache" and "clear the data" options to clear the cache and data, and try to set the ringtone after restarting the phone.