Develop Bugs

My G2 will shut itself off - any suggestions?

I'm looking for any ideas for the problem I'm having on my G2. I'm afraid it's a hardware problem and not much I can do about it.
I started having problems after upgrading from CM 7.1 to 7.2, but I don't think it was related to the upgrade. I started having battery draining problems, the phone took forever to get fully charged, and car mode would automatically start sometimes when plugging up or unplugging the charger. I cleaned the usb port with alcohol (with battery removed), let dry, and restarted. Now I don't have the car mode problem and the battery problem is somewhat better.
My problem now is that the phone will just die when I'm using it. Usually when I'm using the browser. I'll be scrolling on a page and the phone will just turn itself off. Like the battery died. I can turn the phone back on and it will start up, get all the way started back up, but while it is still loading the home screen widgets, it will go off again. I can repeat this several times. The only way to recover is to plug in the charger. I don't have to hit the power button again, just plugging in the charger will start up recovery mode automatically, I'll choose reboot and the phone will start normally then and stay on.
The phone never dies when I'm not using it. I'll carry it all day, making phone calls on and off, and it'll stay on with no problem. Mostly, I only have the problem when using the browser. Also had the problem while using my newsreader. Once during playing a game. But if I start up browsing the internet, it doesn't take long before it will turn itself off. A matter of a couple of minutes. I don't have the problem with reading emails with K9. Don't have a problem in downloading from the internet such as podcasts. Don't have a problem in sending text messages. Don't recall it shutting down while using the Facebook app. After putting up with this for a week, some troubleshooting and observations.
I never have this problem if the charger is plugged in. Only when it is running fully from the battery.
I've tried swapping to a different battery.
Turned down the overclocking with no difference.
I've changed to other recoveries, CM 7.2, CM 7.1, a CM 7.1 that I was running in May. No difference.
I've swapped memory cards.
I've reset battery stats.
No difference if running on wifi or just data.
Clearing caches made no difference.
So, I start thinking it must be a hardware problem, but then why does it only crop up when internet browsing. Must be power related since plugging in the charger makes it go away, but why does it not have a problem with using the phone in other ways?
Any suggestions on what I could try?

You could try to see if there is too much voltage drop when you start something power-hungry. Use a battery voltage logger and post the results. Start logging, let the phoneidle for a minute and then start browsing. Even if the phone shut off, the log should still be there after rebooting.

Thanks for the idea. I can't locate a logger that looks like it would work. It would have to capture a quick drop in voltage that is momentary. This problem happens even on a full battery and when the phone come back on (either momentarily or after a recovery reboot) the battery level is unchanged.

You might try as well an other way: first idle, then gradually step up to a more power hungry app to see when the problem actually happens. I have no other ideas...

Make sure that you dont have any contact with the battery and the door.
Normally batteries are covered with an aluminum wrap, and can cause short-cuts with the phone itself.
I searched it for a while with the galilio batteries.
You can try to put some saranhwrap around the battery.

I have the same problem with two different batteries. But I'm ready to try that too.

Battery graph
So here's a graph of my battery status. Long time to charge to 100%. Discharges pretty rapidly. Each downturn ends in the phone turning itself off. Notice that at 7:30 today, it turned itself off, I did a recovery reboot, then noticed it wasn't charging very well (green line turns to blue but doesn't increase), then I did a manual reboot and when the phone restarted, it showed the battery was at 100% charge (from about 60% before the reboot).
What do you think - hardware or software?

oVeRdOsE. said:
Make sure that you dont have any contact with the battery and the door.
Normally batteries are covered with an aluminum wrap, and can cause short-cuts with the phone itself.
I searched it for a while with the galilio batteries.
You can try to put some saranhwrap around the battery.
Click to expand...
Click to collapse
Well, I just took the cover off for awhile and tried it. Played crosswords (Shortz) for awhile with no problems. Started my newsreader (Newsrob) and it shut itself off in about 15 seconds. So, no short to the battery cover.

Same thing is happening to me. I use poweramp or the browser and the G2 just shuts off. Then I restart it and it tells me that the battery is low. Once I shut it down and reboot in recovery and wipe the battery cache it's back to it's normal battery level. I disabled data and set my phone for 2G networks only and it didn't shut off after. I'm assuming this is a wireless issue? I'm running mimicry 1.3.0 on my G2.

Had the same problem. Swapped out batteries and problem gone.
Sent from my HTC Vision using xda app-developers app

Did you swap the battery and immediately have no further problems? I tried swapping my battery already and still have the same problem.

[Q] Unexpected shutdown when battery is low

Recently my N7(2013) will shut itself down when the battery is low (about 10%) without any warnings, not even the "Shutting Down" dialog that it should show whenever it shuts downs (except for the usual low batt warning when it reaches 15%). After the shutdown, I cant even turn it back on not even the screen, nor the low batt (waiting for charger) screen is showing up until I plug it into a power source the it will show the charging screen and then I can turn it on again.
Its been a few times now, not sure its a hardware or software problem though. It shouldnt shut down when it still has 10% in it right?
Attached is the screenshot of the Battery Usage that shows the battery level shots down to 0% immediately from 10%.
Nexus 7 2013, Stock, Not Rooted

Are you using a battery monitoring program (battery doctor, better battery stats, etc)? If so, look in their settings, to see if they are set to shut down @ 10%...

BSnapp said:
Are you using a battery monitoring program (battery doctor, better battery stats, etc)? If so, look in their settings, to see if they are set to shut down @ 10%...
Click to expand...
Click to collapse
Nah I don't trust these apps so I don't use them. Moreover I'm did not root it so even if I use them they shouldnt have the permission to shut it down

Simple fix
It is an issue I have suffered with a couple of times and it appears we are not alone. It seems that the battery calibration is out of whack. When you charge your nexus up does it stay at 100% for quite a while? I
tried factory data resets amongst other things and nothing worked. I stumbled across a thread with a really simple fix. Turn your tablet off for 2 hours. Then turn it on again. Mine miraculously lost 26% of battery in that time (from 100% where it had been for 8 hours down to 74%). Then it started to use the battery at a normal rate. Working fine now.

Do I have a bad battery too?

1. Bought it used - c6502. Phone arrived with around 10% battery, everything looked fine and then it kept shutting off every time I tapped the camera icon. It was on android 4.4.2
2. Charged to 100%, after hard resetting (using the button next to the microsd slot) couple times, it finally turned on, updated to 4.4.4, used it whole day without any problem and then google play services, xperia home, camera common or something simlar and whole bunch of craps stopped working when battery was around 20%. Phone was STILL on. So I turned off the phone and can't turn it back on now. Tried the hard reset button, Sony & the xperia logo show up, then I see the gray screen only. The on screen charging indicator shows around 3 bars which should be good enough to power up the phone, but it doesn't turn on! I'll let charge it fully and try again.
Can a bad battery stop all these services? or is it a software issue? As I said the phone was still on when all these services started crashing.
After reading some other threads, it feels like some kernels have battery drain issues ( I even don't know which kernel mine is running, used it for a day only). Should I try to flash a different kernel? Could you name a few that don't have battery drain issues? Or should I just get a new battery?
Thanks!

Battery Level stuck @80%?

I can not seem to clear my Issue of the battery always showing 80%.
I have reflashed back to Stock, but still the same problem.
Even when I had TWRP recovery installed it showed as 80%.
Any ideas how to fix this please?

you have infinite battery, be happy!

I wish

Fixed it by flashing Open EU H815.kdz file once again and now the battery use is showing correctly.
Edit: The problem is back again!!!!
After several hours when it seemed okay, I put the phone back on charge and Bingo.
Stuck back at 80% again, even on my other original LG Battery, and to top it all i have a stuck LED on faint green.
WTF???

I had the same problem before, how many apps do you have installed? Does it charge in safe mode? If not, does it charge to 100% when the phone is powered off?

Tried Safe Mode and the same problem persists.
The battery seems to charge fully but the OS is not showing it correctly

Hmm, in my case, it was always stuck at 74%/75% and it doesn't charge more regardless what the indicator says. What about if you powered off the phone and charge, does it actually go past 80% and to 100%? I fixed my problem as I had 739 apps installed incuding system apps so I greenified everything except for those I needed and that fixed the problem, not only am I getting more than 2 hours of battery life regardless if the screen was on or not, it's now 12 hours or so of battery life with a few hours of screen time but the charging is fixed. Before I used to also have problems installing in Google Play Store, it would actually sit there doing nothing after the download and install when it feels like it even after a hour or it can install fast.

Tried charging while turned off and still gives the same reading.
Last night I reset the phone and left the battery out for 30 mins before re-inserting and setting up the phone once again.
So far it seems to be fixed and showing correct battery %.

Almighty1 said:
739
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Click to collapse
Would you mind sending me a list of all your installed apps using this app or a similar one?https://play.google.com/store/apps/details?id=com.projectsexception.myapplist

All the usual stock LG Apps.
Plus :
Busybox Paid
Faster Fix
Google calendar
Hsbc
My o2
O2 priority
You View
Ebay
Titanium Backup Paid
F-Droid
Antutu
GPS Yest
AdAway
BuildProp Editor
CPU-Z
Super User Pro

android404 said:
Would you mind sending me a list of all your installed apps using this app or a similar one?https://play.google.com/store/apps/details?id=com.projectsexception.myapplist
Click to expand...
Click to collapse
Sure, see attached.... Please note that I am including the system apps in the app count as this is what's reported by Titanium Backup *root. I was wrong, I seem to still be getting the stuck battery percentage indicator which can happen at 73/74% or even 97%.

It seems the stuck battery charging % problem came back when I changed the brightness to 100% Auto but went away when I changed it to 0% Auto. I had the problem at 38% Auto too.

Is there any workaround? I just flashed my LG G4 from 10a to 10e and Rooted it. And It happened exact the same.
After a reboot I didn't have Service IMEI Null . This happened twice in a row, after that it magically resolved and now I have Service and IMEI... But after some reboots I started noticing that LED green turned on and the 80% Stuck Battery....

Im experiencing the same issue battery stuck at 80% and green led stuck on. Issue went away however battery life was appallingly bad, went from 1.5 days battery life to struggling to last a day. Battery stuck at 80% has come back today.
I have tried factory reset, upgrading from 10c to 10e.

i'm having the same problem: battery level stuck at 80%, network set to 3G but not actually connecting, and the inability to charge the battery when it is in the phone - even though it says "charging" the percentage kept dropping (tried different chargers, cables, batteries, and even wireless charger - i can only charge using a separate charger). the battery not charging started about a week ago. the 80%/3G issue started this morning.
no root or any other mods, very few apps installed. i've had the phone about 6 months. verizon. 13B. 5.1.
i did wake up the other day to a frozen "firmware update" screen, but it has not come back, and i've checked for updates (to 6.0 maybe) with no success. this "firmware" screen was after the battery stopped charging, but before the 80% problem. i had to pull the battery after it sat there a few hours (it said "don't disconnect USB" even though USB was never connected, and there was a progress bar at 0%).
UPDATE: this thing may be falling apart in front of my eyes. now my service is disabled and I have no network connection showing up at all.

zeiss74 said:
i'm having the same problem: battery level stuck at 80%, network set to 3G but not actually connecting, and the inability to charge the battery when it is in the phone - even though it says "charging" the percentage kept dropping (tried different chargers, cables, batteries, and even wireless charger - i can only charge using a separate charger). the battery not charging started about a week ago. the 80%/3G issue started this morning.
no root or any other mods, very few apps installed. i've had the phone about 6 months. verizon. 13B. 5.1.
i did wake up the other day to a frozen "firmware update" screen, but it has not come back, and i've checked for updates (to 6.0 maybe) with no success. this "firmware" screen was after the battery stopped charging, but before the 80% problem. i had to pull the battery after it sat there a few hours (it said "don't disconnect USB" even though USB was never connected, and there was a progress bar at 0%).
UPDATE: this thing may be falling apart in front of my eyes. now my service is disabled and I have no network connection showing up at all.
Click to expand...
Click to collapse
Try taking the SD card out, if that doesn't work take the sim card out and then back in. That normally gets the service working again for me.
I had this same issue and sent it back to the supplier, they than forwarded it onto LG who couldn't find any issue with it. Im now waiting for it to be sent back to me.

Are you using a 3rd party (non-OEM) battery by any chance? I ask because I had the same issue occasionally when using a non-LG battery. It would fix itself after a few reboots or by installing the LG battery that came with the phone. I truly believe based on my experience, and others (there is another thread related to this exact problem) that the issue is purely battery related. Even the service disabled symptom.

rick09 said:
Are you using a 3rd party (non-OEM) battery by any chance? I ask because I had the same issue occasionally when using a non-LG battery. It would fix itself after a few reboots or by installing the LG battery that came with the phone. I truly believe based on my experience, and others (there is another thread related to this exact problem) that the issue is purely battery related. Even the service disabled symptom.
Click to expand...
Click to collapse
I don't have a 3rd party battery so I don't think that's my issue

OEM battery for me. I did remove SD card, and reseated the SIM: no help.
This is my current work around: Turn off phone. Charge battery to 100% with phone off (overnight). Turn phone on.
It seems to charge fine (and have accurate %) when the phone is off. Then it powers up with accurate battery percentage and 4G coverage. Note, I've only tried this twice, but it worked both times.

I'm having the same issue. Battery stuck at 80% and green constant notification light. Not rooted BTW.
I assume LG will investigate the issue while I am stuck with no phone for weeks.
I should have never bought a non nexus phone...

Phone turns off randomly with low battery warning

Hello everyone! Recently my Note II started to behave differently. Whenever I charged it completely, the battery abruptly fell to sometimes 60% sometimes 40% immediately followed by low battery warning indication and shutting down. I tried changing ROM and calibrating the battery again but nothing worked. Finally I replaced the battery with a new one and also clean flashed another ROM in a hope to see if the problem is gone or still there. But to my surprise the problem is still intact. Now, when I turn on the phone the battery is 90% and when I keep using it, it drains normally, but as soon as I put it idle it turns off randomly. When I turn the phone back on the battery is still at the same percentage level at which is turns off. I believe there is not an issue with the battery. Please help me what to do, I am using TWRP recovery that doesn't gives the battery stats wipe option too. Should I flash a new ROM again? I would greatly appreciate if someone please helps me in sorting this problem.
What I have already done!
1. Replaced the battery
2. Changed the ROM
3. Re-calibrated the battery