Excellent:
Excellent meets the same external condition standards as Premium, but the battery has a minimum 80% capacity and may include non-manufacturer parts.
Good:
Good means the item has light signs of wear and no screen scratches. The body might have light micro-scratches you won’t see from more than 20 inches away. The battery has at least 80% capacity.
Fair:
Fair shows some signs of wear. The screen may have light scratches OR a dot that is slightly visible when the device is on. The body may have a few visible scratches and dents. All of these are cosmetic and do not affect performance. The battery has at least 80% capacity.