I recently bought a used iPhone 4S from a seller on eBay, which was noted as being locked to the "Three" (UK) network. I am a Three PAYG customer myself so thought my sim would work fine in the 4S if I cut it down to size. I did this (the microsim still works in my old phone with an adapter) but I cannot get service on the iPhone. It works fine over Wifi and I'm a bit puzzled as to why this is happening. On my Android phone it was a case of simply popping the sim in and entering the settings. I can't find an option for entering settings on the 4S.
I might be missing something major as I'm completely new to the iPhone (my only other Apple device is a Wifi iPad). Thanks for any help.
I might be missing something major as I'm completely new to the iPhone (my only other Apple device is a Wifi iPad). Thanks for any help.