I have a Galaxy S3 on U.S. cellular.On my previous phones at U.S. Cellular I never got a sim card inside my phone, but with the S3 I have a 4g LTE sim card in it. I was wondering if it would possible to use that sim in an unlocked iPhone?
The 4G SIM is only used for data. You should technically be able to get data working on it, but it might have to be in the same phone on your account though.