G4 died while charging

[noobsquared]

It almost seems like it is heat related where phone stops charging when it gets to a certain temperature and you have to wait till it cools down or unplug and re-plug. What is everyone's brightness set to? Stores are told to keep the brightness at 100% and with 100% brightness, running demo all day long..you can only image that the phone would eventually die since those chargers are probably low output and can't keep up with the drain from that screen with 100% brightness.

Have you guys noticed the phone getting warm when it stops charging? What if you unplug and re-plug right away when it is actually warm and keep playing/using the phone? Would it stop charging again?

 

[maybish]

It's so hard to tell. The phone doesn't really get hot. I played the game again last night for the first time in a few days. Put it on the charger and went to bed and this morning the phone is fully charged. It's like it happens just randomly.

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[Shepx13]

It's so hard to tell. The phone doesn't really get hot. I played the game again last night for the first time in a few days. Put it on the charger and went to bed and this morning the phone is fully charged. It's like it happens just randomly.

Sent from my VS986 using Tapatalk

Maybe you've answered this already, but has it happened to you at all after NOT playing a game?

 

[noturbizniss]

I pulled the data out of my battery monitor widget, and removed recordings where the phone was unplugged or on USB. I've also removed the readings when battery was at 100%. I have 3 charts - screen on or off, off only and on only. I think that on my phone at least the data shows that around 90 degrees is the drop off point (as someone else mentioned). Honestly, im not sure what to make of the peak being at 90 with lower values before and after. Any other thoughts?
I will have my wife put the monitor on her phone and see if I get a similar chart.

 

[maybish]

Maybe you've answered this already, but has it happened to you at all after NOT playing a game?

Has only happened after playing the game.

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[noturbizniss]

If anyone wants to send me their battery monitor widget text file I'll aggregate the data and see if this is an issue on all phones or just some.
Add file to
https://drive.google.com/folder/d/0B3iB60b29A5oOGNRLXlrcTFpSE0/edit

 

[RedOctobyr]

I got another G4 over the weekend, and am trying to maximize my battery life, using "simple" methods. A minimal load of apps, etc. Not using Greenify yet, or restricting permissions using Access Lock. Just starting with the easy things.

My battery life was doing pretty well, in my experience yesterday. I charged the phone overnight, using a cheap eBay 2.1A charger (I had been using either the LG charger, or my Aukey QC 2.0 charger overnight). This morning, I found it had gone from 20% to 25% overnight

Similarly to what my first G4 did a few times, it went up and down some overnight. I haven't looked at the data closely yet, but it was again temperature-related, with the temperature climbing sometimes overnight, resulting in low charge rates (or discharging).

I took a screenshot of CPU Spy, wondering if it would show a high % of time spent with the CPU running at high clock speeds. It did not look obviously unusual to me, based on a mere ~2 days of history/experience with CPU Spy.

So that, to me, is a bit interesting. If the CPU wasn't working extra-hard, and causing the heat problem, then perhaps it's somehow related to the charger/cable I was using. Hypothetically, if the cheap charger's output voltage was a little low, and the cheap cable has thin wires causing an additional voltage drop, then maybe the phone is receiving 4V, not 5V (made-up #'s). This will require more current to transmit the same amount of power.

Current (amps) transmission, not power (watts) transmission, causes heat. This is part of why, in another hobby, our 1000W+ battery chargers run on 24V input, rather than 12V input. To output 1000W with 12V input, you need 83A of input to the charger. This would generate much more heat in the input wires, and in the charger, than using 24V and 42A to provide the same amount of power.

Maybe the better chargers/cable reduce the excess heat generation, by providing higher input voltage. Put differently, perhaps my phone didn't have anything unexpected/unusual running last night (I had rebooted it in the afternoon). Maybe the difference was *just* using the cheap charger & cable, and maybe that contributed to the phone being warmer than usual overnight, and therefore charging more slowly.

Plus, even when the phone is actually cool, this cheap charger & cable doesn't seem to provide as much current as the LG or a QC charger. So it can't make as much progress anyhow, even when the phone has cooled down.

 

[maybish]

Thanks for all that info! You guys are so smart. I have no idea what you said! Haha but basically I've only been using the LG charger.

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[GrooveRite]

I got another G4 over the weekend, and am trying to maximize my battery life, using "simple" methods. A minimal load of apps, etc. Not using Greenify yet, or restricting permissions using Access Lock. Just starting with the easy things.

My battery life was doing pretty well, in my experience yesterday. I charged the phone overnight, using a cheap eBay 2.1A charger (I had been using either the LG charger, or my Aukey QC 2.0 charger overnight). This morning, I found it had gone from 20% to 25% overnight

Similarly to what my first G4 did a few times, it went up and down some overnight. I haven't looked at the data closely yet, but it was again temperature-related, with the temperature climbing sometimes overnight, resulting in low charge rates (or discharging).

I took a screenshot of CPU Spy, wondering if it would show a high % of time spent with the CPU running at high clock speeds. It did not look obviously unusual to me, based on a mere ~2 days of history/experience with CPU Spy.

So that, to me, is a bit interesting. If the CPU wasn't working extra-hard, and causing the heat problem, then perhaps it's somehow related to the charger/cable I was using. Hypothetically, if the cheap charger's output voltage was a little low, and the cheap cable has thin wires causing an additional voltage drop, then maybe the phone is receiving 4V, not 5V (made-up #'s). This will require more current to transmit the same amount of power.

Current (amps) transmission, not power (watts) transmission, causes heat. This is part of why, in another hobby, our 1000W+ battery chargers run on 24V input, rather than 12V input. To output 1000W with 12V input, you need 83A of input to the charger. This would generate much more heat in the input wires, and in the charger, than using 24V and 42A to provide the same amount of power.

Maybe the better chargers/cable reduce the excess heat generation, by providing higher input voltage. Put differently, perhaps my phone didn't have anything unexpected/unusual running last night (I had rebooted it in the afternoon). Maybe the difference was *just* using the cheap charger & cable, and maybe that contributed to the phone being warmer than usual overnight, and therefore charging more slowly.

Plus, even when the phone is actually cool, this cheap charger & cable doesn't seem to provide as much current as the LG or a QC charger. So it can't make as much progress anyhow, even when the phone has cooled down.

Stop using cheap stuff! It'll end up costing you more in the end.

 

[RedOctobyr]

Stop using cheap stuff! It'll end up costing you more in the end.

Thank you

The intent was also to provide some data points, and possible discussion/learning about the underlying cause of this behavior. And remember that if your phone is getting too warm for any reason, it will only charge at around 300mA tops, regardless of the quality/speed (capability) of charger you're using.

I have a bunch of little cheap chargers stashed around, to make sure that I at least have something with me if I go on a trip, etc. The cheap charger you actually have with you is more useful than the awesome charger you forgot to bring. These have worked fine charging my Galaxy S3 for several years. But the G4 appears to be more picky/demanding.

For a long time, I'd power down my S3 when charging it overnight. So every day started on a fresh boot, etc. If I shut down the G4 overnight, I expect (though I haven't tested it yet) that it would charge OK even using a cheap charger. An app couldn't go-rogue and heat up the phone, etc. So even if I did not have an LG/Quick Charge charger around, I could probably use that approach as a fall-back, to avoid starting the next day with a dead battery.

 

[Shepx13]

I had picked up a note 4 for my wife a week ago. She decided she didn't care for the size and she wasn't using the pen that much. We took it back to decide between the S6 active and the g4. Guess what? The g4 on display had a dead battery even though it was plugged in! Also heard from the girl we know that there's been others with issues as well. That sure made it a simple decision for my wife.

Too bad LG!

 

[ArtieTheOneManParty]

I plugged in my phone last night (stock charger) at around 24% (I think), and this morning it was at 36%. I also had a "smart notice" on the home screen that said that Facebook is draining my battery and should be stopped. I ignored this, and looked at the battery usage, and Facebook was only showing a few %, so I don't think that was an issue. I'm plugged in now at work, with the stock charger, and it appears to be charging just fine.

 

[Shepx13]

I plugged in my phone last night (stock charger) at around 24% (I think), and this morning it was at 36%. I also had a "smart notice" on the home screen that said that Facebook is draining my battery and should be stopped. I ignored this, and looked at the battery usage, and Facebook was only showing a few %, so I don't think that was an issue. I'm plugged in now at work, with the stock charger, and it appears to be charging just fine.

Were you playing any games before going to bed?

This is such a bizarre issue. I've still been keeping this phone at the top of my list, while waiting for the note 5 a d moto x announcements, but this definitely gives me some pause.

 

[ArtieTheOneManParty]

No, the phone was just sitting idle next to me, and I plugged it in before going to bed. It charged up normally this morning using the same charger.

 

[maybish]

It's so weird. I haven't had that issue since my last. So hopefully it's fixed.

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[Shepx13]

It's so weird. I haven't had that issue since my last. So hopefully it's fixed.

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Glad to hear that. After the One Plus and Moto announcements (and my disappointment), I'm most likely going to try out the G4.

 

[Chevydoll420]

This happens to me daily. I never let apps stay open and running unless I'm using them at that moment. I plugged my phone in at 15% whike scrolling through fb i was down to 2% than boom it shut off. Daily! I'm sick of this i waited forever to have the money for this phone and now I'm just frustrated that I ever switched from the G5.