Two devices on one iCloud account - how to separate?
Our family has two iPhones, one a 3 and one a 4s. We just added the 3 to the iTunes account when we got it, it wasn't really a problem that our contacts were synced or new app downloads were until today. I (on the 4s) downloaded a new software update - iOs 6.1.3, and after it had downloaded it was doing the installation questions and showed both of the numbers attached to the iCloud account, I just clicked continue continue etc (whoops). And now I'm receiving the texts that are going to the iPhone 3, so if the iPhone 4 texts the iPhone 3, the iPhone 3 receieves the message like normal, and it send normally on the iPhone 4 but then it also "receives" it on the 4 on a new thread - as if another phone has sent it. Basically I think i've accidently set my iPhone 4 to use both numbers. How can I change this? Not desperate to be receiving all the texts that the iPhone 3 is supposed to be getting!
Also, with regard to setting up a new iCloud account for the iPhone 3 (this is more practical since I have had the iPhone 4 for longer and therefore have more stuff on it), would it be best to take it into an apple shop, in the hope they would be able to back up the stuff that is on her phone (ie contacts and pictures that she can't afford to lose) and then create a new account and then put everything back onto the phone? Or would the phone keep the contacts/photos if there isn't an iCloud attached to it? Could we do this from the computer that her iPhone 3 is synced to?
Help!
Thanks!
iPhone 4, iOS 6.1.3