My G4 came with 2 batteries which I switch around every month or so, using the other as a spare. (Both genuine LG batteries) Prior to my last switch attempt, there was an Android update for the G4 and ever since then the only battery which works is the one in the phone during the update. If I install the other battery, the phone boots ok, runs for about 30 seconds, reports 100% charge, and then shuts down after a brief "Invalid Battery" message. This is bad! Does anyone have any idea what's going on here?
I've tried the following:
1: Cleaned the contacts to make sure all four connect well.
2: Checked that none of the contacts are bent.
3: Cleared the cache.
4: Many, many reboots. The problem follows the battery.
Best answer by rallyr
I got the battery back today, and it works fine. I can now use both batteries same as before. They did not say what the problem was, but obviously there was a problem with the battery itself. This makes me very happy that I didn't do the "factory reset" that the phone tech wanted me to do, since it obviously would not have worked and I'd have been stuck re configuring my phone for a week!