Rogue iPhone 7 screen problems

Have any other repair shops had rogue iphone 7's in that wont accept certain screens or have really bizarre problems ?

Iv done a few now and have had no problems other than 2 rogue phones.

Rogue phone 1 probably a month ago now when fitted with a high copy screen displayed nothing, just a black screen. Put a different suppliers high copy screen on and the home button wouldn't work. Put an oem screen on from China (original digitiser / lcd, re glassed with aftermarket glass) and it works fine.

Usually I would put this down to bad parts, but I have since fitted both of the screens I tried on those phones to other phones and not had any issues or complaints from customers, the black screen works 100% fine and the no home button screen 100% fine.

Then today I had another rogue phone, with the same black screen problem, number 2 rogue phone the touchscreen wouldnt work on on screen from one supplier and was black from the other.

The weird thing about all of this is as far as I can see they are all running pretty much the same ios version (New IOS 11 keypad etc), so its as though these particular phones were manufactured differently to the others, as the non working screens on these rogue phones work fine with other phones and iv had no customer complains related to them.