Updating iPhone 5 software to iOS7?

I've got text messages that I really don't want to lose; I'm not so concerned about the apps and photos and whatnot because those can be backed up.

I want to update to the iOS 7 system, but I'm afraid of losing the texts. Are there any problems with this happening, or should I be safe to do it?

And if not, what steps can I take to prevent (at least) losing the messages (i.e., I don't care if they're stored on my computer instead of my phone, I just want to keep them in some shape or form.)

Just go to service section they can help you. I thing yes. But not sure

Just back it up in itunes, you should do this anyways everynow and then. If you backup to icloud, you can go to http://www.icloud.com/...icloud.com and view what you have backed up. You should be fine after upgrading the OS regardless, but always do that anyways.

The texts can be backup as well, using the same method as backing up the app data.iTunes.

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