Question [Q] incoming call screen wake delay

I am onD80220aSEA kit kat, every time when someone call me the screen will take 2-3 seconds to turn on.
It is very annoying as i need to let it rang for 2-3 seconds only just able to see who is calling.
Already google it, but seems can't find any fix, anyone can help here???

The answer me feature also take about 10 seconds to answer the phone call when i place my phone near to my ear.