Messages 103
Protecting a message from deletion
You can lock a message so that it will not be deleted even if you 
delete the other messages in the conversation.
Press HOME  , and then tap   > Messages.
On the All messages screen, tap a message thread.
Press and hold the message that you want to lock 
Tap Lock message on the options menu.
A lock icon   is displayed at the right hand side of the message.
Deleting a message thread
Press HOME  , and then tap   > Messages.
On the All messages screen, tap the message thread that you 
want to delete.
Press MENU, and then tap Delete. 
When prompted to confirm, tap OK. 
Any locked messages in the thread will not be deleted unless you 
select the Delete locked messages check box.
Deleting several message threads
Press HOME  , and then tap   > Messages.
On the All messages screen, press MENU, and then tap Delete. 
Select the message threads you want to delete. 
Tap Delete. Any locked messages will not be deleted.
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