Upgrading to ios 6.will i lose text message history?

This is my first time with an iphone and my first os upgrade. I back my iphone up through itunes but will i lose my text message history or is it backed up as well?

Added (1). I did a back up 15 minutes ago. I guess, here goes nothing!

No you won't lose any texts or messages or settings but a backup is still recommended.

I have done the update and everything was fine.

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