Unlocked iPhone 8 plus
Hi
I’ve just purchased an iPhone 8 plus at Best Buy in Portland,Maine because the next door Apple store was packed and the representative advised me that it was the same.
Well, I asked the Best Buy seller that I wanted an iPhone unlocked and I paid the full price for it. Now my iPhone was tested with a AT&T SIM card but when I try with a T-mobile one it doesn’t recognize it.
Any help on how to find out if my iPhone is really unlocked?
Thanks.