Found dark screen workaround except for camera viewfinder
My ATT Galaxy S4 (SGH-1337) screen went dark a couple of months ago. I had not turned the phone on in some time. Two days ago, I turned the phone on and was able to see the screen barely, under the right light.
I was able to get the screen in a very workable condition by following steps below. There is one exception, the camera. It takes good photos but the viewfinder screen is still pretty dark.
1. Under Brightness:
a. Turn automatic brightness off
b. Turn brightness slider to up to brightest level
(the slider bar itself has an issue: turning to highest level actually causes screen to darken , at about 75%, the screen is brightest)
2. In Screen Mode select Dynamic
3. Install "Filter Your Screen" app from Playstore
a. Create filter with all 4 elements (Alpha, Red, Green, Blue) set to highest settings
Any ideas how to fix the camera viewfinder will be appreciated.