BACKLIGHT IC – U3701 U5650 U5660 U4601, LM3539A1 – 16 PIN.

Light Controller  or Backlight IC . Iphone 7 / 7 Plus / 8 / 8 Plus / XR  light controller. When the iphone screen runs out of light or with opaque values ​​that you can hardly see, normally it is this driver ic that stops working.

You need skills in replacing small BGAs to install this part.