Episode 1167 (1:22:27)Sean from Oxnard, CASean is having issues with his iPhone. It's demanding he activate it again. His carrier is AT&T. Leo's wondering if the SIM card has come loose, gone bad, or fallen out. Leo says to go to AT&T and ask them to replace the SIM. Topics: Mobile Phones Tags: iPhone, Mobile Phones, SIM cards, AT&T View the discussion thread.