iPhone 15 512GB

Acceptable:
The phone has multiple marks, dents and scratches on the frame. The screen has visible scratches as well, but it is uncracked and intact. Put a case on this phone, and it will serve your daily needs just as well as any phone would.
 
Good:
The phone will have some visible signs of wear, such as scratches and marks on the frame and the screen. The scratches on the screen are hard to notice when the phone is turned on.
 
Excellent:
The phone you'll get is in excellent condition. It may have a couple of very light scratches on the frame and the screen, but no notable signs of wear.
 
What is Unknown Part Devices?
Unknown part devices means the devices may appear "Unknown Part" message in the "About" page.
These messages appear when the part of the phone (Screen, battery or camera) has been repaired before.
But it doesn't affect the function of the phones.