1. Find "Settings"
Press the messages icon.
Press the Menu key.
2. Turn on notifications
Press Notifications below Notification settings to turn on the function.
When the box next to the menu item is ticked (V), the function is turned on.
3. Choose message tone
Press Select ringtone.
Press the different message tones to listen to them.
Once you've found a message tone you like, press OK.
Press the Home key to return to standby mode.