LG G4 owners on AT&T are receiving a mystery OTA update that installs without permission
Many of those complaining were concerned that their phone was hijacked so easily. Most in the middle of a call had that call dropped so that the update could be received. Suppose someone was on an emergency call and that call was disconnected? That person would have to wait for the update to be completed before trying to call 9-1-1 again.
The update, which weighs in at 25MB, could carry an enhancement to the AT&T address book. Others claim that it removed a bug that prevented the phone from connecting to a 5GHz Wi-Fi network, and yet others say that the update fixes an issue with Quick Charge 2.0.
We've started sniffing around to see what we can find out, and as soon as we get an answer we will pass it along.
source: Reddit via 9to5Google