You can select the ringtone you want to hear when you get a call.
Find "Add ringtone"
Slide your finger downwards starting from the top of the screen.
Tap the settings icon.
Tap Sounds and vibration.
Tap Add ringtone.
Tap the different ringtones to hear them.
Once you've found a ringtone you like, tap DONE.
Return to the home screen
Tap the Home key to return to the home screen.