I've had the unlimited data plan for non-smartphones for many years now and every time I've gotten a new phone(smartphone or not), data has worked perfectly after tweaking the APN settings. I had this plan long before 3G data was available but it even picked up 3G on the first smartphone I got(iPhone 3GS) after I pointed the APN settings correctly. I never get my phones directly from AT&T so it's not like they have changed any settings on their end that allowed the data to work on the 3 smartphones I've had since I got the non-smartphone unlimited data plan. The problem I'm having now is with LTE data. I am currently using an iPhone 5 and I am getting 4G speeds(still on my non-smartphone data plan) but I can't seem to get it to pick up LTE. I know a lot of users on this forum use the non-smartphone data plan on their smartphones and I was just wondering if anyone of them has gotten LTE to work with it on an iPhone 5 after changing the APN settings. If so, which APN settings are you using?