[G4 Q&A, Help & Troubleshooting] work4crown:
Here is the history of the Verizon LG G4 phones I've had and how they all stopped wirelessly charging:

1st (Original) phone bought on: 7/31/2015.

Wireless charging stopped working.

Verizon Tech support agent (VTSA) tried swapping batteries, various charging pads, powering the device on/off, a hard reset and finally gave up and replaced the phone under warranty with a refurbished LG G4.

2nd (replacement) arrived on: 6/3/2016

Wireless charging stopped working.

Same tests as before led to another refurbished phone.

3rd (replacement) arrived on: 6/22/2016

Wireless charging stopped working.

I tried soft reset per the VTSA.

-VTSA suggested a software hard reset that flashes the phone’s software but didn’t think it would actually fix the problem so he didn’t recommend I try it.

-VTSA also mentioned he saw a website that suggested taking the phone apart to physically repair it but didn’t recommend it because it would void the warranty.

-He also mentioned that I might have to deal with LG directly and have them repair it.

-VTSA called LG for help. LG mentioned a repair option. Or Verizon could replace the phone...for the 3rd time.

-I asked if there would be a charge for the repair if I had it done through LG. The VTSA said he didn’t think there would be a charge but I would be without a phone. We agreed it sounds like LG knows there is a physical problem with the phone and doesn’t want to admit it.

-Device should arrive early next week. Tuesday/Wednesday.

4th (replacement) to arrive: 7/26/2016

I have of course looked all over the internet for answers to why this is happening. It seems to have affected many users. No one on the internet seems to have a solution for this problem. Verizon just keeps sending out replacements without any explanations or admitting there is a problem. LG offers to repair the phone but doesn’t admit there is an issue.

4th update: I decided to be really careful not to use QC2.0 chargers with this new phone because I really like wireless charging. For about a month I had no problems; wireless charging was working perfectly because I only used 1.0 amp chargers and cables.

Then one day I plugged my phone into my Toshiba laptop to charge it and didn’t realize the port I was using was a special high power USB port. It seems to have cooked the wireless circuit on this one too. So my wireless charging no longer works and I am back to using QC2.0 chargers and cables.

I guess I need to give up on having an LG G4 that has wireless charging. It doesn’t seem meant to be in my case at least. I will remember this when I am shopping a new phone. I guess the LG G5 doesn’t have wireless charging anyway so maybe it’s back to Samsung...

Here is the best explanation I could find for what might be causing the problem:

http://xdaforums.com/g4/general/wireless-charging-meltdowns-t3163156/page10

“I haven't responded in a while but my tests seem conclusive. I have not touched my new G4 with a fast charger and after 2 months it is still wirelessly charging perfectly on my old Qi sticker and charging pucks.

I HAVE used fast chargers for a split second just to get a quick burst (typically when its completely dead), but never left it on the charger for long periods.

In my car, I have resorted to using the slower charging method and not my QC 2.0 fast charging port.

All in all, I say these QI circuits are simply burning out. The chips are known to be defective. It really sucks but it seems you have to choose 1 or the other here. Either use wired fast chargers or go 100% wireless charging + slow wired. Mixing the 2 is causing the problems.

The weird thing with my new G4 is that while wireless charging and it reaches 100%, it starts to emit a high pitched frequency. Similar to static on a radio. I never had that before with any other G4s

Hope that helps.”

Here is an online discussion:

http://xdaforums.com/g4/help/wireless-charging-suddenly-t3146343

Here is an online poll that shows many LG G4 owners lost the ability to wirelessly charge:

http://xdaforums.com/g4/help/tried-wireless-charging-t3227672