Checks if the Apple device has been serviced since purchase.
Important: This is not related to MPN (i.e. when Apple sells a refurbished device).

Sample:
Case 1: no repair
Model: iPhone X
IMEI number: ################
Refurbished: NO
[This does not necessarily mean that this is not a refurbished device.]

Case 2: Refurbished
Model: iPhone 6
IMEI number: ################
Refurbished: YES