BlackBerry Curve 9720

Find "Phone"

Press the profile icon.

Find "Phone"

Press Change Sounds and Alerts.

Find "Phone"

Press Sounds for Selected Profile.

Find "Phone"

Press Phone.

Select your ring tone

Press Ringtone.

Select your ring tone

Press the required ring tone.

Select your ring tone

Press Try it to hear the ring tone.

Select your ring tone

Once you've found a ring tone you like, press the Menu key.

Select your ring tone

Press Save.

Return to the home screen

Press Disconnect to return to the home screen.