Chosen Solution
Can you guys help me if u encounter this kind of problem before, with the help of a light i can still use the phone with no problem.
Well.. You can repair the backlight, however. It may just be easier for you, to just replace the display assembly iPhone 6 LCD and Digitizer
Most people they think its the digitizer nope its not, i tried 4 good working digitizer so with my new iphone6. but thats not the solution to this problem. I assumed its the backlight fuse,coil,ic etc.
