I got my iPhone 12 used off of Swappa but can say it was like brand new. 100% battery health, still under warranty for a few months, so someone bought it and sold it after only owning it a few months I think. Since I don't owe anything on it, I will probably be getting an iPhone 15 Pro when they're released mainly for the USB-C. I only bought this one used was because I wanted to try out iOS again coming from Android and can say I think I'll stick around a while
. And, I love how long iPhones get software updates, so I'm fine getting a new phone since I'll probably hold on to it for 4-5 years at least instead of every 2 years like I did with my Android phone.