The problem with used iPhones is that the hardware is still powerful enough to run modern iOS, the battery only has about a year left to live so unless you budg

The problem with used iPhones is that the hardware is still powerful enough to run modern iOS, the battery only has about a year left to live so unless you budget in a battery replacement, you're basically tethered. This may finally be clearing up, but Apple's iPhone batteries from the previous decade were abysmal and had no headroom for aging. That's why they were doing the stupid downclocking of older iPhones, because the battery could no longer deliver the power to run full bore without browning out.