To change your authorization code settings, go to the Security Center after you log in. Delivery methods that have been recently updated are not displayed.
Supported carriers include AT&T, Sprint, Boost, Verizon Wireless, U.S. Cellular®, TMobile®, MetroPCS®, Cincinnati Bell, Virgin Mobile USA, Cricket, Cellular South, Centennial and nTelos. Text HELP or STOP to 28580 for more information or to prevent receiving further messages.