I want to sell my 4 iPhones: 4s, 5s, and two 6s.

The white iPhone 6s is in perfect working condition; the display and battery were replaced a year ago.

The black iPhone 6s has display and battery issues.

The iPhone 5s has its original display, but it got lines on the display and touch is working fine; the battery is in good condition.

The iPhone 4s is in good condition just having slight gap in the back