Grade A devices have surfaces that are like new, with no apparent signs of use. The devices have 80%+ battery health. They are fully functional, having passed all functional tests.
Grade A- devices my have light scratches on all surfaces, including the display. The devices have 80%+ battery health. They are fully functional, having passed all functional tests.
Grade AB devices will exhibit more noticeable cosmetic blemishes. The devices have 80%+ battery health. They have passed all functional tests performed.
Grade B devices may have heavy scratches on all surfaces, including the display. Device housing, ports, and display borders may have dents, dings, delamination, and/or discoloration. The devices have 80%+ battery health. They have passed all functional tests performed.
Grade C devices may have extensive, pronounced scratches, and blemishes, such as scratches and scuffs, easily visible upon quick inspection. Device battery health is not guaranteed.