Hey peeps.

So i have been having the exact same problem. Stuck in an endless reboot cycle if not plugged in

. I only have like 13 days left before i am due for an upgrade (Honestly will not go for LG again. Going to go with Samsung S7 edge)
Anyhoo, I read some google articles and followed some advice and i am happy to report a new battery and R250.00 (thats South african rand) later and my phone seems to back to its normal LG'ely self

. Still waiting to see if any other problems surface but so far so good

Good luck all.