Chinese screen assembly for iphone 4. What's the features?

Question

iPhone

2 days ago I bought a display assembly for 1000 rubles (as I understand it, of very poor quality) I installed it
without checking (I turned it on only when the device was fully assembled)
The result is terrible color reproduction (smartphones 7 years ago are resting), pixel stripes, and everything else any open application was translucent.
The first thought was to take it apart and put it back together. Then scored and used as is.
Now I take the bodies in my hands and do not believe my eyes - the perfect image! Even when you press the screen, there are no streaks.
What's the catch? Is the display stuck? )) Perhaps I should wait for the return?)
PS (of course, the screen gives off a little blue, the color of the ass differs (China is more gray)

Answer 1

When assembling, the cable was not inserted all the way.
Chinese screens work fine, the color is a little different and that's it.