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You can save your voicemail number making it easy to call and listen to your voice messages.
Find "Voicemail number"
Slide your finger down the display starting from the top edge of your phone.
Press Call settings.
Press Voicemail number.
Save the voicemail number
Key in (prefix) 5 (your phone number) and press OK.
Return to the home screen
Press the home icon to return to the home screen.