Blackberry 6750 User Manual page 88

Why were some of my messages
deleted from the handheld?
If your handheld memory is full, your handheld
deletes the oldest messages from the messages
application to accommodate new ones. It will not
delete saved messages.
Why aren't all of the SMS options
described appearing on my
handheld?
Depending on your service provider plan, some
SMS message options might not be available on
your handheld. For more information, contact your
service provider.
What are the Priority and Callback
Number fields in the SMS options?
In the Priority field, you can set priority level for
your SMS messages.
set the callback
In the Callback Number field,
number that appears on your SMS messages.
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