Chosen Solution
Replaced the LCD on an iPhone 6, and the screen will not adjust in brightness. It is stuck on the mid level brightness and won’t go up or down. The power button flex cable is damaged as well, but has not been repaired yet, could that be related? Or maybe a bad LCD? And help is appreciated.
This issue can be occur due to bad LCD and back light driver fault. check with another LCD touchpad module to rectify the issue.
