Find "Voice call ringtone"
Press Menu.
Scroll to Settings and press the Navigation key.
Scroll to Sound profiles and press the Navigation key.
Highlight the active profile and press Edit.
Scroll to Voice call ringtone and press the Navigation key.
Select your ring tone
Go to the required folder.
Highlight the different ring tones to listen to them.
Highlight the different ring tones to listen to them.
Once you've found a ring tone you like, press the Navigation key.
Exit
Press Disconnect to return to standby mode.