Check the profile and ringtone settings.
Please go to "Settings" or "System Settings-Scene Mode" to check whether the "Standard" mode is selected. Then, go to the "Set Ring Tone and Volume" section, try to make a call yourself, and observe and test the ring tone.
Check the speakers and ringtone files.
You can play music or other media files in the device to check whether the speakers are working properly. You can also try to change other ringtones to eliminate the problem of whether it is a specific ringtone file.
Restore factory settings
In order to further eliminate the possibility of system abnormality, we can try to restore the factory settings after backing up the fuselage data.
Go to Lenovo authorized repair point.
If the above methods fail to solve the problem, we sincerely invite you to a nearby Lenovo authorized repair point for testing. You can query the information of the nearby maintenance stations through the following link: [link address]. Please note that the normal business hours of the maintenance site are from 9: 00 to 18: 00 from Monday to Sunday, excluding holidays. Websites around the world may be adjusted according to their own operation, so it is recommended that you call in advance to get the most accurate information.