Question [Q] Gionee E3 screen flickering after OTA update

Hi guys,

Brief history which may help you to solve my issue
I rooted my phone and bricked it while installing custom bootanimation.Later I was able to flash the stock firmware.I again re-rooted it to restore the IMEI.Later I updated it to the current software via OTA around 280MB,used 3G for updating.

Problem
After the installation of the new update,the screen started to flicker every 2 seconds.It would sometimes stop when I locked the screen and unlocked it back.Is this due to rooting? Did anyone face the similar issues with their phones?