@FunBike31 Left the phone at service centre again. Battery guru estimated at 2337 mAH. Accubattery estimated at 2887 mAH.
This phone has become an headache. I gave it to the service centre as suggested by the person called from Asus and the engineer who I am supposed to talk to was not available. As usual the people at reception would receive the phone and gave me an RMA sheet. Story repeats again, Asus dodges the issue, its like they do not want to understand the issue at all. When I tell them about the battery tester results, they say that they do not accept the third party equipment. I left the phone there and asked them test with their own equipment and show me that the battery draws 6000 mAH. I am fed up with this, service centre is 1.5 hrs away from my place and I was circling around them for 4 times now. I could not leave the town required by my work as I had to submit it and collect it from the service centre. This time I am thinking to just get rid of this phone and never ever buy any ASUS product and make sure none of my friends/family buy this piece of shit.