This is related to the last .151 update, no one at Asus is acknowledging this but this is their firmware problem. I had the same issue, I reset my phone the issue was fixed for 1 day, then it started again. I had to reset my phone again, thankfully the issue didn't arise again, there is some software that is probably triggering this problem, and I have doubts that it is happening due to the armoury crate animation that appears in the first boot after reset. I cancelled it when I had reset my phone for the second time.
They have to push a firmware update because there can't be so many devices with all these hardware problems at once.
