Extract SMS messages off iPhone 4 Ok, I've read past posts, and found good articles on Lifehacker, but I want to crowdsource my worries for a moment: Can I safely extract my SMS messages from my iPhone 4 running iOS 4.3 without jailbreaking or paying money? 

I'm not scared of the SQLite db holding the info and would love to learn a bit about it in the meantime. I would likely use my MBP running 10.6 to do so, but have SUSE Linux and Win 7 systems on hand if that's easier.
Do a backup of your iPhone.
Backups are located here here ~/Library/Application Support/MobileSync/Backup.
Find there a file called 3d0d7e5fb2ce288813306e4d4636395e047a3d28 (it might have some extension, can't remember from top of my head if it has one at all).

It is an SQLite db file so you can open in in SQLite browser of your choice then and access all your text messages.