|Ok this might be a little confusing so I'm sry to start with lol.|
My wifes Iphone 4 will not send me a text message if she creates it out of her contacts, but if I send her a text it shows up as me but as a "new" message, not in the same one she sent me the message from, but she can reply to the one I sent her and I get it. She can call me from that contact just fine. So I had her delete me from her contacts and I sent one and it came up as my email for some reason. So she saved that as a new contacted then saved my phone number in it as well and it does the same exact thing, she can't text me but she can call. It says the message was sent but I never get it. Mine is the 4s jailbroken but I have no problems sending and receiving text with anyone else but hers.