Download the previous stable build and install it. It will wipe all your data so do take a backup. And after that never ever install any update from asus. Thank you.
I also updated my phone to 086 version and then the battery drain occured. Within 24 hours i reverted back to 082 version and now my phone is working perfectly fine. I would suggest you guys to roll back to the previous build. There is one irratating...
