How do I backup and restore SMS Messages?
How can I make a backup of SMS messages to the SD card in Android 2.2?
I recommend VeryAndroid SMS Backup. It is a smart Android SMS backup software that can copy and backup SMS on Android phone to computer, restore SMS backup file to any Android phone, and also send messages or chat with a friend on computer directly, exactly the same as that you do on your android phone.
It can help you:
Go SMS Pro https://market.android.com/details?id=com.jb.gosms has backing up SMS to SD as a feature. It is also a great replacement for text messages with Quick Replies and sending SMS on a schedule.