Nokia Asha 311 Display Light Jumper Ways Solution
https://gsmfixer.blogspot.com/2015/10/nokia-asha-311-display-light-jumper.html
Nokia Asha 311 Display Light Problem may occur due to the water damage in your mobile board and the IC problem. You can also try replacing the LCD because sometimes it may be LCD fault problem. If there is a hardware problem related to the board then you can apply the following diagram solution for Nokia Asha 311 Display Light Jumper Solution.