What Android settings should I set for optimized 3CX app operation on a Xiaomi device?

For Android 10 (MIUI v12):

  • Set app notification options: Long-tap the 3CX app icon to open ‘App info’ and set:

    • ‘Autostart’ = [enabled]

    • ‘Battery saver’ > ’No restrictions’

    • ‘Notifications’ > 

      • ‘Show notifications’ = [enabled]

      • ‘Show app icon badges’ = [enabled]

      • ‘Floating notifications’ = [enabled]

      • ‘Lock screen notifications’ = [enabled]

      • ‘Allow sound’ = [enabled]

      • ‘Allow vibration’ = [enabled]

      • ‘Calls’ >

        • ‘Show notifications’ = [enabled]

        • ‘Importance‘ = ‘High’

        • ‘On the Lock screen’ = ‘Show all notifications and their content’

      • ‘Chat >

        • ‘Show notifications’ = [enabled]

        • ‘Importance‘ = ‘High’

        • ‘On the Lock screen’ = ‘Show all notifications and their content’

Lock the app in recently used apps: (a) Open the 3CX app, then tap to open recent apps (standard Android square button). (b) Tap and hold the 3CX app preview until the side menu appears. (c) Tap on the lock icon to keep the app active for notifications.