Other settings
Select Menu > Messag. > Options > Settings > Other and from the following
settings:
Save sent messages — Select to save a copy of every sent text message,
multimedia message, or e-mail to the Sent folder.
No. of saved msgs. — Define how many sent messages are saved to the sent items
folder at a time. When the limit is reached, the oldest message is deleted.
Memory in use — Select whether to save messages to the phone memory or
memory card.