What is the oldest iPhone that will work on T-mobile after the 3G Shutdown?
I just tried asking this to T-mo support chat and they were unwilling to give a definitive answer. Is it really that hard to answer? Is it something like this: Which iPhones will work after the 3G shutdown? iPhone 5, 5c -- No iPhone 6 -- Maybe iPhone 6s -- Maybe iPhone 7, 8, 11, 12 -- Yes