Xiaomi 12 Pro
Android 12.0
1. Find "Ringtone"
Press Settings.
Press Sound & vibration.
Press Ringtone.
2. Select ring tone
Press the required SIM.
Press More.
Press Choose local ringtone and go to the required folder.
Press the required ring tone.
Press OK.
3. Return to the home screen
Press the Home key to return to the home screen.