I actually have an unlocked Galaxy S4 GT-I9505 - the international version. My carrier is no longer AT&T. It's Consumer Cellular. I got data when I was with AT&T, but since going with Consumer Cellular, I can't get email or data on it. I've contacted Consumer Cellular about 6 times regarding this problem - 6 agents and 2 supervisors - and they've gone through my settings both manually (with me on the phone doing what they say) and through the airwaves. They say everything is correct and there's nothing more they can do, that it should work. But data doesn't. I've contacted Samsung U.K. and they tell me to check my APN and Proxy settings and that it is a problem with my server/settings. Does anyone have an answers to this? This is my first smart phone and I'm pretty disheartened.