How do I change the APN Settings for iPhone 4 with StraightTalk?
I recently activated my iPhone 4 (unlocked, originally with AT&T) with StraightTalk. Everything works (phone, SMS, internet, etc.), but I still can't send or receive MMS. I've already called StraightTalk, and they've told me how to change the APN settings & what to change them to, but when I go to the APN, it's locked, I guess you could say. Anyone been through this & know what to do? Also, if it makes any difference, I upgraded to iOS 7 the day it came out.
iPhone 4, iOS 7