The fax service is only available with a Premium Visual Voicemail subscription. If you'd like to upgrade to Premium Visual Voicemail and enjoy added benefits like a larger mailbox, up to 20 custom greetings and transcription of voice messages to text, check out this info.
Ensure there's an available fax printing destination with a 10-digit mobile number.
Refer to the Voicemail guide for additional assistance with setting up the fax options.
Press *VM (or *86).
If there is a system greeting, press the # immediately to interrupt it.