Those 3 are 100% functional and unlocked (ATT, T-mobile...):
-iPhone 7 Plus 128GB - works perfectly - Battery health = 82% - We moved to Xfinity Mobile and they won't support it so I upgraded. It comes with a protective case.
-iPhone 7 64GB - like new, never abused - Battery health 76%
-iPhone 5 - restored to default like the others, it works like a charm even though quite old.
I'll add an Iphone X with a defective screen. It works, we see the welcome locked screen but the touch screen isn't responsive.
I'll also add an Iphone 6 Plus that does not boot, don't know why.