Got the phone back from the Asus Service Center - they fixed it in one single day(although the phone was returned after a week since sent, because of the courier company).
The issue was the display module, which was replaced entirely. Hopefully, they did not messed up other things, because now I have a soft annoying noise in the ear speaker during phone calls, but I can live with it.
I love the design of this phone just awesome and for those who were worried about the battery life just keep calm because LG G3 with the quad HD display has the same screen size and same battery which is 3000 mah like the zenfone 2 and battery is good enough so I think this zenfone 2 will give us good battery life and perform well too:)
No FM Radio!
So it’s an average cell:) Thankyou:)