Find "Voice mailbox number"
Press the Navigation key.
Scroll to Messaging and press the Navigation key.
Scroll to More and press the Navigation key.
Scroll to Voice messages and press the Navigation key.
Scroll to Voice mailbox number and press the Navigation key.
Enter voicemail number
Key in (prefix) 5 (your phone number) and press the Navigation key.
Exit
Press Disconnect to return to standby mode.