You can select the ring tone you want to hear when you get a call.
Slide two fingers downwards starting from the top of the screen.
Press the settings icon.
Press Phone ringtone.
Press Add ringtone and go to the required ring tone.
Press the required ring tone to add it to the list of ting tones.
Press the required ring tones to hear them.
Once you've found a ring tone you like, press OK.
Slide your finger upwards starting from the bottom of the screen to return to the home screen.