Hi! Maybe it could be your battery, or, like you are thinking, a network connection issue... Does your phone still restart like this when you have your Wi-Fi turned off, but you are still at home?
How long have you had the phone? My Nexus 5, when it was in a low-signal area, would try really hard to get coverage; and so the battery would take a hit. When my G3 was experiencing a different battery issue (it would stall on a charge), I was told to do a factory reset to see what happened. Try wiping your G3 with a factory reset; and if the problem still persists, perhaps send LG an email (I did this too and they responded fairly quickly - within a few hours!).
Also: have you updated to the latest software?
05-01-2016 09:51 AM