So I've searched everywhere and tried all the solutions, I still cannot receive messages from friends who have an iPhone. This morning I sold my iPhone and then went and bought a Galaxy S4. Everything works perfect besides any friends who have iphones, it still tries to send as an imessage. Idk what to do and this is annoying as hell, as I've called at&t and apple and they don't offer any support. I restored my phone my phone before selling it but I think what may be the problem is that I put my sim card back in after the restore to call the buyer. How can I fix this?
