So after 3 hours on the phone with Verizon and 1 hour with Apple it turns out that there was a block on my number at Verizon for downloads and pictures. After that block was removed by Verizon, I can text again!
I never had similar problems with my Blackberry. So make sure you don't have a similar block and don't waste your time resetting your phone your phone multiple times, and restoring from iTunes.
I am so sorry to hear the troubles that you are having with your text messaging! It's strange to hear that your iMessage (texts to iPhones) is working, but SMS. When did this start? What zip code are you in? When you try and send a message, do you get any errors or what happens? Are you able to receive messages at all? Any problems with calls or data? Please let us know so that we can assist further. Thanks!
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