I join to AT&T not to long ago and purchase a new phone. I can text out going messages to other carries but cannot received incoming from other carriers except for AT&T providers. I spoke to a rep already. They have give a lot of insturction in which I have follow. I took the sim card out. Spam and Roaming are turned off. I turned the phone off and on they time they asked no result. I need HELP and not the run around.