I've been on the Apple Upgrade plan for a few years but I now own my iPhone 15 Pro and plan to sell it. I have a bunch of Best Buy gift cards so I'd prefer to buy the 17 Pro in full from Best Buy. All I want to know is, am I able to buy a phone from them to activate on my Verizon line but then when I end up selling it in a year or two "unlock" it so I can sell it as an unlocked phone? Thanks!