Uneven backlight + yellow tint
My problem with this Iphone 5 is that the backlight on the top of the screen seems to be uneven, It looks like only every other backlight led works, and in the dark spaces casing effect of uneven backlight and yellow tint all over the screen. The remaining brightness of the backlight is sufficient for every day use, but causing problems to see the screen outside and generally its rather cosmetic issue with small dark patches at the top clearly visible on light colour background.
The screen has been checked on another phone and it behaves the same, but connected to another, third phone the backlight is full and even.
Could this be problem with the screen or with the phones?
One of the phones that the showed problem was lightly water damaged, second phone was not.
Or is it a case that some screens are not working properly with some main boards?
How can I fix it?
Questa è una buona domanda?