Find "Incoming call"
Press the Menu key.
Press Profiles.
Press Options.
Press Customize.
Press Tone settings.
Press Incoming call.
Select ringtone
To select an existing ringtone:
Press the required ringtone.
Press the required ringtone.
Press Select.
To add a new ringtone:
Press an empty slot on the list.
Press an empty slot on the list.
Press Add.
Go to the required folder.
Go to the required folder.
Press the required ringtone.
Press OK.
Exit
Press Disconnect to return to standby mode.