Needing help with programming the APN settings on my iphone 4s?
My sister bought me an iphone 4s for my birthday. I am currently with Straighttalk, and I want to keep it that way, so she bought a straighttalk sim card for the phone. I can send/receive calls and text messages, but I cannot access the internet without wifi, although my straighttalk plan includes unlimited data. There is no APN menu or cellular device option on my phone, so apple support told me that the settings are currently locked, and that they couldnt unlock those settings. Those settings are locked by the carrier that the iPhone is locked to, which I believe is AT&T, since that's where the previous owner bought the phone. Apple support also said that my phone has to be unlocked by the carrier in order to edit those settings, and that I should call AT&T and ask them to unlock them. How do I go about this??