UTStarcom C1100 User Manual page 48

Messaging Application
messages/pages in the mailbox to make room for the incoming
messages/pages. Auto Erase does not apply if all the messages are
unread. The Sent and Draft box will also be affected if this setting is on: if
you send a message and there is no more room in the Sent box, the
oldest message is deleted to make room for the new one
This setting allows you to turn the Auto Erase feature on or off
The following options are available:
On
Off
Highlight the desired option then press
Default: Off
40
to confirm