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You can select the ring tone you want to hear when you get a call.
1. Find "‹SIM› Ringtone"
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Sound & Vibration.
Press ‹SIM› Ringtone.
2. Select ring tone
Press Select from Files.
Press the required ring tones to hear them.
Once you've found a ring tone you like, press the Return key.
3. Return to the home screen
Press the Home key to return to the home screen.