Just upgraded iPhone 4 from 4.2 ios to 6.1.3 ios now can't connect to internet
Last night I updated my friend's iPhone 4 from 4.2 ios to 6.1.3 ios. She had not updated her software since she bought the phone. The ios loaded successfully however now she can't send pictures via text and can't get online via 3g.....she doesn't have wi-fi. I'm perplexed becaused I don't know why upgrading the software would cause this type of problem.
Any help would be greatly appreciated.
iPhone 4, iOS 6.1.3