My phone is LG D855 also known as G3 international variant. I had my phone in my pocket normally. After picking it up after 45 minutes, it was hand-burning hot and nothing on the phone was working correctly. This got fixed after a reboot but I realized my battery level had dropped from 53% to 17%. What could be the thing that caused it?
My initial theory was some problem occurred in the battery (some sort of sudden discharge) and it gave the phone's internal materials a bad time.
Can anybody come up with an idea or a similar experience?
Here's the screenshot of battery screen:
Click image to enlarge