How do I delete my messages off my sim card all at the same time instead of one at a time?

SOURCE: Sim Card, Undelete Text messages

There is a few possible way to read undeleted text messages......
to be honest if your willing to pay for it, by all means go for << http://www.spystore.ie/cheating-partners.htm >>>, but there is better gear you can get at an affordable price
such as - http://www.cardlogix.com/specification/specification_towitoko110.html

http://www.iwantoneofthose.com/office-toys/usb-hub/usb-sim-card-reader/index.html
and
http://www.infinityusb.com/default.asp?show=productsdetail&ProductID=11

as for software to get the data: http://www.p-dd.us/deleted-files-recovery/simcard.asp

or for free

http://www.bluejackingtools.com/windows/undelete-sms/

SOURCE: At&T 8310 Blackberry. Delete all contact at one time, and from the sim card?

This is done in desktop manager. You have to hook your BB up to your Desktop and then go through the backup and restore process. If you need help we can show you.

SOURCE: deleted text messages

If they were deleted you can't recover the messages.

SOURCE: My LG Xenon's sim card is full of text messages,

delete your outbox, it says you have 0 in there but you have tons. i had the same problem when i got this phone

SOURCE: Message memory gets full though the capacity is 500.

yes... i am also getting same problem.

total SMS memory is 500 ie 200 for inbox , 200 for sentbox, 50 outbox and 50 for drafts. your my folder SMS's are still considering in inbox. that should not be more than 200.

thanks
kuldeep chanchal