I'm going to suggest swappa.com for buying unlocked phones a couple generations back at a cheap price. I've been using an s20 I think I picked up for like 150 bucks the last couple years without a problem.. And I just picked up a Pixel 7 to put graphene on so I can you know not have Google up my ass all the time. It's all significantly cheaper and all you have to do is put your SIM card in the new phone as long as it's unlocked you're good. I'm more than willing to try any alternatives to swapa it's just the only company that I've used thus far outside of an eBay situation.