View the amount of memory currently in use for messages.
The voice mailbox is a network service and you may need to subscribe to it. For more
information and for your voice mailbox number, contact your service provider.
6 Call history
Call history stores information about the last missed, received, or dialed calls. It also adds the
total duration of all calls. When the number of calls exceeds the maximum, the most last call
replaces the oldest.