Xiaomi How to Change Notification sound
Xiaomi 48150
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 If we want to change the notification tones on the Xiaomi smartphone, we can choose between nature sounds, a chime, xylophone sounds, or any of the pre-installed ringtones. If two SIM cards are used on the device, we can set a separate ringtone/notification tone for each SIM card for the dual-SIM function.
Note: In this guide we will activate Dual SIM and select an individual tone for one SIM card, other options can be accessed in the same way.
 Android 11 | MIUI 12.0   
  
    
    
    
    
   - Tap on Settings
- Tap on Sound & vibration
- Tap on Notifications
- Tap on All ringtones
- Choose a ringtone/notification sound