Back up is a sore point, especially when it is too late. Hope this list will help you save you SMS.
SMS Backup Android
Need to copy SMS from your Phone to PC? Want to backup SMS online on you Gmail account? Have new Phone and want to move all SMS from the old one? Use this free SMS Backup Android App.
SMS Backup & Restore Pro
A simple App to Backup and Restore SMS Messages.
Handcent SMS is a powerful free sms/mms tools for your android phone with multiple functions.
Among them: Backup/restore SMS /MMS,Support 20+ languges, Group sending options