Voicemail, sometimes referred to as Voicemail 901 is your device's answerphone service. It is the basic service, available to all plan.com customers as soon as they connect. messages are recorded and the user is notified by text message that a message has been left. The user has no control over the order in which messages are played back
Visual Voicemail is a device specific application that provides additional features over Voicemail, notably, message details are displayed on screen like an email inbox. Messages the user wants to listen to or ignore for a later time, can be chosen at will. if the message is from one of the user's contacts, the stored name of the contact is displayed with the message.
The principle advantage of Visual Voicemail over traditional Voicemail is Visual Voicemail offers far more controllability.