I have a iPhone 12 Pro 256GB unlocked. I use T-Mobile service. Tried trading at Best Buy for 16Pro. Was planning on using the trade in credit towards new phone and pay the rest on best buy credit so it would be unlocked but was told that they have a new policy that started a few years ago where even if you pay retail price, the phone won't be unlocked and would have to use it for 3-6months or something like that so it could be unlocked. And they only have Verizon and AT&T and I told them that I'm not switching carriers due to their poor service in my area and would cost more.. I was shocked and even the sales guy agreed it wasa greedy sales tactic.. I can't get it through T-Mobile since T-Mobile doesnt accept Best Buy credit obviously.