Akash GuptaActually i had also ordered a good bumper case for my phone and m using it....one of my friend was also having these same issue...and he contacted asus regarding this....and they solved his prob...hope you will also might get help or positive reply from asus...good luck buddy.
the display is very delicated in this mobile. when i got this mobile i observed small scratches at normal use without having any sharp objects including keys in my pocket but i could still see some serious scratches on my display. since then i haven't used the phone without a screen protector. i suggest to never use the phone without a screen protector. use bumper case to prevent fall damage on back glass. all i can say that this phone is not durable without protection, My phone fell so many time from at least 5 feet and didnt break the display because i ordered the protection from glazeddinc. they got some serious protection stuff on their site. i just wanna say its easy to apply screen protector by ourself instead of someone else applying it because they will just ruin it. good luck getting that display fixed mate