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I just upgraded from an old pantech phone to an iphone 5s. I'm familiar with running it for the most part because I have the ipod touch 5th generation. However, I cannot get my iphone to send or receive sms or mms messages no matter what I do. I've gone through all the settings and forums and nothing has worked for me. I've got the latest ios update but I still can't get it to work. PLEASE help. This is really frustrating.
Call your cell provider and have them check the provisioning on your phone.