I was scammed myself with a fake iPhone 15 ProMax.
I was provided with the image of the back of the sealed iphone box and the Apple Store receipt. They matched. I verified the IMEI number on two IMEI checking site both showed as clear. I checked the serial number on the Apple support site it came up okay.
But, after I got the phone and turned it on I noticed the display wasn’t full size checked some other stuff. And things were starting to look weird. Plus I checked the MagSafe connection it wouldn’t stick.
I did notice after checking the scam box with a real iPhone box two things that were different. The iPhone image on the REAL box is raised noticeably. The fake felt like just a crease. The other thing that was more noticeable is the back of the box. The fake box had a sticker on the back which contained the phone’s information. On the real box that info is printed directly on the box.
I also did connect to my home wifi temporarily. My wifi app said that it connected as a Generic Brand Android device running Android Oreo 8.1
Physically the FAKE iPhone was perfect.
I bought this FAKE iPhone via Facebook marketplace.
Personally I feel that Facebook should be held accountable for this to happen on their system. They have the ability to monitor these potential FAKE items and they should at least post a notice on each of these ads stating that it might be a scam of counterfeit products.