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Battery life is plunging from 80% to zero

Hey all,
About three weeks ago I had a strange problem. I noticed that in two straight charge cycles, my battery life plummeted from about 80% to zero in just a few hours. I'm not sure what the issue was. I hadn't changed settings, installed new apps, etc. My first screenshot shows an example of what happened. 4G and data were off during the entire time.
Since then, things have been okay. I typically get 3 days standby with 4G on and light use, or 4 days with 4G off. That's mostly standby with maybe an hour or so of talking and minimal use.
After those strange battery plummets, I installed and used GSam Battery Monitor to get more details about what processes were running on my phone in case I noticed the sharp drop happening again. Everything had been fine for over two weeks, with me getting expected battery life before this issue and not experiencing any odd, sudden drops (maybe 5 or 6 charge cycles). This lends me to conclude that my battery's charge capacity is okay, and calibration also shouldn't be an issue.
However, the problem arose once again a couple days ago. Went from 75% to nothing in just a few hours. 4G was off during that time. The third and fourth screenshots show the same issue. Charged my phone, and this morning the same thing happened yet again. At about 90% the plummet began, and within an hour or so I was at 75%. At this point I took screenshots of Android's battery status, and I also did the same for GSam to show what apps and processes were running. The phone's temperature seemed fine.
The GSam screenshots taken when the phone was at 75% and dropping are in the next post, since I'm limited to four images in this one. I have no idea what's causing this massive, sudden battery drain. The only thing I can think of is that I've done Verizon's OTA updates, but otherwise pretty much all my settings, apps, and usage are the same. Plus, for two weeks I had normal battery behavior, so I'm completely baffled.
I also know that cell standby is incorrectly reported in the GS3 battery screen, and I'm getting a good signal where I live so that shouldn't be a problem. I forgot to get screen time for the first case (first two images), but it shouldn't be more than 10-15 min there since most of the charge was lost due to the freak plummet.
If anyone may have an idea of what's going on, or if there are some tools/tests I may use to figure this out, I'd really appreciate it. I turned off my phone after taking the screenshots at 75%, so if I need to turn it on and check something for you I can probably do that. Thanks a lot.

FYI, here are GSam screenshots from when the battery was in the process of plummeting this morning.

i think you built in battery status settings are off. i barely get 12 hrs with medium use, so what i think it happens is that the battery monitor is not showing the proper discharge, and then all of a sudden it catches up to the discharge rate.
are you on stock rom, rooted, unlocked bootloader?

wizzardeel said:
i think you built in battery status settings are off. i barely get 12 hrs with medium use, so what i think it happens is that the battery monitor is not showing the proper discharge, and then all of a sudden it catches up to the discharge rate.
are you on stock rom, rooted, unlocked bootloader?
Click to expand...
Click to collapse
I am stock rom. No rooting, no unlocking.
These plunges are definitely an anomaly. Truly, with me barely using the phone and turning off mobile data, I get a few days of standby. I've had the phone since July, and the aberration in battery behavior has been the steep plunges I've shown.
In between these instance of steep plunges, I've had normal use. I really don't think it's an issue of calibration. Please believe me when I say that my normal, light use during the past four months gets me anywhere from 3-5 days with me barely using the phone. When I say barely using it, I mean not even touching it for an entire day if nobody calls me. But now, a sudden plunge in battery life is happening at 80% with no apparent reason.
I think it might be some kind of software or hardware glitch, but it's impossible for this to be normal given the battery life I typically get. Just looking at that steep drop, it's crazy and just happens out of nowhere.
But please trust me when I say that these sudden plunges that have happened a total of 4 or 5 times, causing the battery to drain completely in a few hours when I'm not touching it, are quite a drastic aberration from the normal standby life I get. Something is definitely wrong here, I just don't know what.
And one more thing to add is that after this sudden plunge and rapid drain, charging the battery still takes the normal time it does when I'm not having this issue. That is, about 2.5-3 hours to reach a full charge (and I charge with the phone 'off'). The battery is being completely drained. But this happened twice, then didn't happen for maybe 5-6 charge cycles, then happened again twice.
Before the first instance, I remember an OTA Verizon update around 10/5. My phone was okay for 2-3 charge cycles after that. Then two rapid drains. Then 5-6 normal cycles. Then two more rapid drains. There was a second Verizon OTA update somewhere in there but I can't remember.

and you said it only started once you did the OTA update from verizon right? well you could either try to go back to the stock verizon rom pre-update and see what happens there, or contact verizon and let them know what happens with the new OTA update. they could replace your phone, or it could be a bug of the new OTA update. i am on stock rom and rooted and deleted the apk that kept on trying to push the update. just unlocked by bootloader and so far my battery life has improved compared to previous locked bootloader.

i would take it to a verizon store and show them. They might give you a new battery.

I may have to do that. I'm just not really sure what the issue is.
- The battery can still hold a full charge.
- Based on running services, nothing is causing high CPU usage.
- The sudden plummet almost seems kind of random.
- Since there have been normal charge cycles, it's not an issue of calibration.
I'm not sure if this is a hardware issue or software issue. I'm trying to wrap my brain around what could cause the battery to drain so suddenly and sharply. Could the charge somehow be "leaking"? But in that case I'd expect it to happen all the time. If there's an underlying software issue, is there any other tool I might be able to use to figure it out?

Does the phone get hot?
Sent from my SCH-I535 using xda app-developers app

jhoutz said:
Does the phone get hot?
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
Not from what I can tell. Note that the first couple plummet drains were overnight.
But today I caught it before noon. The phone wasn't hot, and the GSam screenshots show no CPU stress.

Maybe you can do a factory reset and se if that helps. They will probably do one if you bring it to verizon anyways. It sure sound like a hardware problem. You'd think if the processors are working that hard that the phone would get hot, I know mine gets pretty hot sometimes under heavy use.
Sent from my SCH-I535 using xda app-developers app

Thing is, all indications show the CPU isn't working hard, and the phone wasn't hot.
I'm stumped.
This is a noobish question, but I presume the only way to go back to stock is to factory reset? One thing I might wait for is the Jelly Bean update, presuming this random drain holds off until then.
But yea, I dread going into VZW because they're just going to try to pass this off onto me doing something wrong, or me not knowing how to calibrate the battery, etc. The information I've provided in my OP and in the screenshots would fly over their heads. Maybe I can just do an online chat and tell VZ to send me another battery?
The only other thing I can think of is that sometime before these plummets happened, I went online to MyVerizon and turned off the Backup Assistant for movies/music/etc. so I wouldn't get all those notifications. I don't think this could be the issue, since the plummet happens when data is off. Plus, GSam would show that Backup Assistant is hogging the CPU or forcing a signal.
I doubt swapping batteries will fix it, though. I'm thinking my internal hardware might have a serious problem.

inm8num2 said:
Thing is, all indications show the CPU isn't working hard, and the phone wasn't hot.
I'm stumped.
This is a noobish question, but I presume the only way to go back to stock is to factory reset? One thing I might wait for is the Jelly Bean update, presuming this random drain holds off until then.
But yea, I dread going into VZW because they're just going to try to pass this off onto me doing something wrong, or me not knowing how to calibrate the battery, etc. The information I've provided in my OP and in the screenshots would fly over their heads. Maybe I can just do an online chat and tell VZ to send me another battery?
The only other thing I can think of is that sometime before these plummets happened, I went online to MyVerizon and turned off the Backup Assistant for movies/music/etc. so I wouldn't get all those notifications. I don't think this could be the issue, since the plummet happens when data is off. Plus, GSam would show that Backup Assistant is hogging the CPU or forcing a signal.
I doubt swapping batteries will fix it, though. I'm thinking my internal hardware might have a serious problem.
Click to expand...
Click to collapse
Before the update, was everything normal?
Is the update with the HE base/baseband?
It probably isn't a hardware problem, just a bad base.
I've noticed after updating my GS3 to the HE base and the battery life was just horrid.
It's said that the new HE baseband uses up more battery also

emckai said:
Before the update, was everything normal?
Is the update with the HE base/baseband?
It probably isn't a hardware problem, just a bad base.
I've noticed after updating my GS3 to the HE base and the battery life was just horrid.
It's said that the new HE baseband uses up more battery also
Click to expand...
Click to collapse
Sorry, I don't know what you mean by "HE" base/baseband.
But yea, this problem didn't come up until after an OTA update.

Check your baseband version under Settings -> About and paste it here
Sent from my rooted Verizon Samsung Galaxy SIII

It's I535VRLHE
Kernel version: 3.0.8-1092717
Build number IMM76D.I535VRALHE
I turned on the phone and within 10 min or so the battery life went down by 2-3% without me doing anything. As a test I've put it into Airplane mode, and it's decreased by about 2% in 45 min.
Now I'm wondering if I have a faulty antenna or something.

Yup ive had it drain 90% overnight many times for no reason. Called verizon and my new battery should be here today.

1+ day on battery and only 11 minutes of screen time?!?

inm8num2 said:
It's I535VRLHE
Kernel version: 3.0.8-1092717
Build number IMM76D.I535VRALHE
I turned on the phone and within 10 min or so the battery life went down by 2-3% without me doing anything. As a test I've put it into Airplane mode, and it's decreased by about 2% in 45 min.
Now I'm wondering if I have a faulty antenna or something.
Click to expand...
Click to collapse
HE is the baseband version and the build number. For example I have: Android Version: 4.0.4
Baseband: I535VRLG7
Build: IM76D.I535VRALG7
which is the version before the update.
Like everybody else said, call Verizon or go to a store and let them know about the battery issues and they should send you a new one. Or even call Samsung and tell them you bought an S3 through Verizon and you are having battery hardware issues.

sonser said:
1+ day on battery and only 11 minutes of screen time?!?
Click to expand...
Click to collapse
Well, no calls made or received during that time. No data being used.
So, wasn't really using the phone during that time...

[Q] Battery Drain problem?

Hello xda
I've been experiencing problems with my Desire S
Basically I've been having massive battery drain when on a data connection (wifi and mobile data), my battery gets fully discharged within an hour.
This sort of thing never happened before and I haven't installed any apps (that I know of) that may contribute to the huge drain.
I've installed Better Battery Stats to identify where the drain is coming from, and from what I can gather (with my limited knowledge of BBS) is that the sync with Google whenever I'm online's the culprit. Funny thing is this never happened before, and I haven't changed any of the sync settings for a year now.
Now could my battery be shot? or is there some way to manage this drain short of replacing my battery? (like rooting etc.)
Also my battery used to get a full charge after being plugged for about 3-4 hours. sometimes just 2. Now I plug it in for over 8 hours and the best it can go is 80%
Some info about my phone:
Desire S
1 year plus with me
unrooted running Gingerbread still (yeah I know)
Thanks in advance!
TL/DR: 1 year old phone drains itself when online on the internet, could battery be shot, or do I just need to root (or something)?
p

There is a very high probability that your battery is shot. Replace and check. One physical warning that the battery is going that it tends to swell up a little bit making it difficult to remove from the phone. Dont know whether it happens with all batteries though.

thanks guy
Now tha you mention it, my battery cover isn't flush with the rest of the phone. Will still have to check though if it really is swelled up
Sent from my GT-P5100 using xda app-developers app

[Q] Bad Battery, Send to HTC?

Hi everyone.
Recently, in the past 2-3 months, I've had MAJOR problems with my battery, i.e.. unreasonable battery drain.
I used to get very decent battery life with my HTC One X, especially when using Sense ICS ROMs.
Since early this year, however, I've experiences severe battery problems.
The most troubling thing however, is the battery drain with Airplane Mode ON. It used to be (and with every other phone I've owned), if Airplane Mode was ON, battery drain was VERY low, even when playing music or something. And in deep sleep, there should be very very little battery drain.
However now, even when turning Airplane Mode ON, the battery still drains considerably – like 0.75 - 1 % an hour. And this is with the phone in deep sleep (I checked).
And with Airplane Mode OFF, the battery drain is really bad. I get great LTE/HSPA+ coverage in my house, usually a full 3/4 bars. But if I go to sleep with the phone at 80% battery, in 8 hours it will have dropped to at least 65% (Sense ROM with no apps installed).
PICTURES!
I ATTACHED SOME PICTURES
The first 3 pictures are old, with reasonable battery drain. These are with lots of apps installed.
The last 4 pictures are new, with bad battery drain. These are with NO apps installed.
As you can see, in the old pictures, with Airplane Mode ON, there is VERY little battery drain, both on Sense and AOSP ROMs. And even with Airplane Mode OFF, battery drain is much less on older pictures.
Compare for yourself.
And let me say that this problem is apparent in ALL ROMs, ALL configurations, ALL setups, ALL RUUs, ALL radios, etc... You get the point.
Actually, the majority of the 'testing' that I've done has been with fresh, clean ROM installs. Either AOSP ROMs with only Gapps installed, or Sense ROMs with NO third-party apps installed, and only Google Account signed-in.
Some configurations I've tried:
1.73 RUU, stock, no apps installed
2.20 RUU, stock, no apps installed
3.18 RUU, stock, no apps installed
Custom Sense JB ROMs, stock, no apps installed
ALL AOSP-based ROMs, stock, no apps installed
ETC...
Currently, I have no idea how to solve this problem, and am very sure that it did not exist in the past (started a few months ago). I've done nearly everything I can, even tried changing the outlet I use to charge my phone. And yes, I use the default, included white HTC charger.
My only option I see is to pack the phone up and return it to HTC under warranty and have them replace the battery. There is no water damage BTW (I checked the strip inside the SIM tray). And virtually now physical damage to the device.
This HOX is my 3rd replacement, the original was bought on May 6.
Does the warranty end 1 year after the original device purchase, or the purchase of the final device? ( I got the third one some time in June ).
But just to be safe, I need to ship it back to the before next Monday.
And lastly, I have:
S-OFF, bootloader unlock, SuperCID
In order to return the phone, I have RUU'd to 3.18 (so it looks authentic), and I will probably relock the bootloader, but leave it S-OFF.
I know you can modify the text in the bootloader to make it appear FULLY unmodified, so I might do that also.
SOOOOOO....
Any advice, precautions, etc? Especially for sending it to HTC?
Insurance, how to deal with HTC, how to convince them to replace my battery?
Any advice as to what might be butchering my battery? Seems that since I've tried virtually every software option, the hardware is the problem...
HOWEVER, could S-OFF be the problem? I S-OFF'd the device around the same time that I started having battery troubles, so could that SOMEHOW be the culprit? I don't know...
Is my battery actually looks bad, or is my perception just really screwed up?
Help? Please?

Your battery drain doesn't sound that bad to me. Batteries wear out over time and don't hold the same charge they used to. 1% per hour hardly seems like anything to complain about.
I doubt you're going to get a warranty repair for something like this.

iElvis said:
Your battery drain doesn't sound that bad to me. Batteries wear out over time and don't hold the same charge they used to. 1% per hour hardly seems like anything to complain about.
I doubt you're going to get a warranty repair for something like this.
Click to expand...
Click to collapse
I'm getting around 2-3% battery drain per hour, if I just let the phone sit there. And in Airplane Mode, it's just as bad.
Trust me, I've noticed a definite decrease in battery life compared to just a few months ago.
I'll also have some overheating problems with light usage on Sense JB ROMs (including the 3.18 RUU stock), so I think that might be contributing somewhat.
But I've been meaning to make a post about this for weeks, and in the meantime trying to ignore this problem and fix it. But it just isn't happening.
What kind of battery drain do you get with Airplane Mode ON?
Compare the drain in the old (1st picture) vs new (5th picture) when Airplane Mode is ON.

That drain doesn't sound bad to me at all, that sounds completely normal.

Really?
Well, on AOSP 4.2.2 ROMs, with Airplane Mode ON, AutoSync OFF, and no apps installed, and no wakelock, I get around 3% battery drain per hour. Probably due to bad power management in the ROMs themselves.
On Sense ROMs (and this is much worse on JB than ICS) , with Airplane Mode ON, AutoSync OFF, no apps installed, and no wakelock, I get around 1% battery drain per hour.
And all of the screenshots are with no apps installed/no syncing. With apps installed and syncing, the battery life is much worse obviously.
I don't know, I've just REALLY felt like there's been a definite decrease in battery life over the past few months.
I know for sure it used to be a lot better.
I understand that batteries wear out over time, but should it be happening this early to me?
I have an original, launch day HOX, that can handle the lowest underclocking (the processor is in 'FAST' mode), although I have experienced lots of overheating in the past during just very light usage.
Could you guys share the kind of battery drain you get with Airplane Mode ON? Over the course of an hour or few?

I never use airplane mode so I can't shed any light on that. You did say that you've experienced overheating, and overheating causes battery life to decrease both in the short term and the long term. It's the arch nemesis of the battery you might say.
Sent from my One XL using XDA Premium

Hydromea said:
.
Could you guys share the kind of battery drain you get with Airplane Mode ON? Over the course of an hour or few?
Click to expand...
Click to collapse
Well I did not use airplane mode. However, I turned off WiFi mobile data. Also lowered my brightness to then lowest setting. I have plenty of apps and probably some wake locks. I did this at 11pm and 60%. I have an alarm set for 730am. When I woke up it was at 54%. So you could possibly have a bad battery. My phone is a refurbished one so I don't known when it was manufactured
Sent from my Carbon-ize Evita using xda-developers app

I never use airplane mode unless I'm actually on an airplane, but I generally get around 2-4% drain per hour with normal use.

Just out of curiosity have you tried Greenifying Maps, Gmail, Facebook, etc, anything that syncs? Just this has brought my battery from 8hour to 15 hour usage. Has your carrier recently added LTE? LTE is a huge battery drainer.
Secondly, while I'm not discouraging sending your phone in. I doubt they'll do anything. Batteries deteriorate over time. It's a well known fact and companies will rarely replace them unless it's DRASTIC, 2 hour battery life for example or phone no longer turns on.

exad said:
Just out of curiosity have you tried Greenifying Maps, Gmail, Facebook, etc, anything that syncs? Just this has brought my battery from 8hour to 15 hour usage. Has your carrier recently added LTE? LTE is a huge battery drainer.
Secondly, while I'm not discouraging sending your phone in. I doubt they'll do anything. Batteries deteriorate over time. It's a well known fact and companies will rarely replace them unless it's DRASTIC, 2 hour battery life for example or phone no longer turns on.
Click to expand...
Click to collapse
Yes, I have tried Greenifying apps, but the battery problem persists even when no syncing apps are installed/autosync is off.
And LTE shouldn't cause problems with battery drain during Airplane Mode. But regardless I have always had good LTE service in my area, so I don't think that's the problem.
If I DO send my phone in, could they just refuse to replace the battery and send it back? Or will they tell me they won't replace it before I send the phone in? What is the process for sending a phone to HTC?

Call them. They're good about explaining what will happen. They'll usually tell you then and there if it's covered. If they won't cover it, they will usually contact you and let you choose if you want them to fix it for a cost or send it back.
Keep us posted as to what happens.
Sent from my One X using xda app-developers app

Ok, so I called HTC today.
The guy on the phone was pretty helpful and nice. I simply explained that I've been experiencing much higher battery drainage than before, how the battery would drain a lot even on airplane mode, overheating problems, etc. Also mentioned that I had tried factory resetting/running without any apps and nothing had helped. I said that I had read that since the battery is not user-replacable, HTC would replace the battery for free. The guy also asked me how long my battery lasted. I gave him some stats like, "With data on and no syncing, around 2-3% per hour" or "With airplane mode on and in standby mode, around 1% per hour" but he kept asking me, "How long does your battery last?" He told me to just tell him a certain number of hours, so I said "10-12 hours with 40 min screen time". That finally stopped him asking. He read me their policy, and asked my information about my address and email, etc. And then it was done.
Also, he used my IMEI to check my warranty status, and apparently the fact that I bootloader unlocked my device raised no concern or mention. :good:
Pretty simple, just keep your cool and keep it simple.
Basically, just tell them the battery life has been really bad, and that you want it repaired. Tell them about how long the battery will last (in hours) and give an approximate screen-on time. Don't worry about fancy stats or figures.
Of course, now I have to actually send the phone back, which is supposed to take around 10 days to repair and return.
Any advice on how to cover up my tracks of S-OFF, unlock, supercid, etc?
I don't want to raise any suspicion, but I also want to be able to re-unlock my device if they ever RUU it. I'm already running the 3.18 RUU by the way.

Hydromea said:
Ok, so I called HTC today.
The guy on the phone was pretty helpful and nice. I simply explained that I've been experiencing much higher battery drainage than before, how the battery would drain a lot even on airplane mode, overheating problems, etc. Also mentioned that I had tried factory resetting/running without any apps and nothing had helped. I said that I had read that since the battery is not user-replacable, HTC would replace the battery for free. The guy also asked me how long my battery lasted. I gave him some stats like, "With data on and no syncing, around 2-3% per hour" or "With airplane mode on and in standby mode, around 1% per hour" but he kept asking me, "How long does your battery last?" He told me to just tell him a certain number of hours, so I said "10-12 hours with 40 min screen time". That finally stopped him asking. He read me their policy, and asked my information about my address and email, etc. And then it was done.
Also, he used my IMEI to check my warranty status, and apparently the fact that I bootloader unlocked my device raised no concern or mention. :good:
Pretty simple, just keep your cool and keep it simple.
Basically, just tell them the battery life has been really bad, and that you want it repaired. Tell them about how long the battery will last (in hours) and give an approximate screen-on time. Don't worry about fancy stats or figures.
Of course, now I have to actually send the phone back, which is supposed to take around 10 days to repair and return.
Any advice on how to cover up my tracks of S-OFF, unlock, supercid, etc?
I don't want to raise any suspicion, but I also want to be able to re-unlock my device if they ever RUU it. I'm already running the 3.18 RUU by the way.
Click to expand...
Click to collapse
I would just leave it at the 3.18 RUU with S-OFF if it was me. You could technically flash a modified HBOOT, but if they really cared that much, I'm sure they could tell your bootloader is unlocked regardless since your IMEI is surely captured when you unlock via HTCDEV.

[Q] Battery Problens!!

Ive had my htc one x for maybe 5-6 months which is almost the longest ive ever been on one phone and i love(d) it, but its always been doing something very strange and aggravating that seems to be getting worse. Battery drain has always been a problem for me with this phone but ehh i can deal with it, but once my phone gets down to about 14% which is does often because of the draining it starts acting real funny with its power and sometimes goes from 14 down to 5 in an instant literally out of no where and as soon as i plug up itll go right back to 13, or itll shut down entirely at 14% but i can just cut it back on, or itll shut down in the middle of me doing something and i have to charge it for about 5-10 minutes before itll even come back on. The latter happened last night btw. No matter what combination of roms/kernels i try this always seems to be a problem. I really cant deal with this anymore and its to the point where i wanna throw my phone into a wall and just buy another one, which im seriously thinking about doing at this point. If such thing has happened to anyone before or you have insight on this can you please help before i just give up hope completely.

What you have described is normal for our device. Remember that the battery percentage is just an estimate of your actual charge. In addition, you find your phone shutting off around the lower percentages as a result of the device attempting to prevent damage to the battery. That is what the HOXl was designed to do.
Sent from my One X using XDA Premium 4 mobile app

KungFuCracka94 said:
What you have described is normal for our device. Remember that the battery percentage is just an estimate of your actual charge. In addition, you find your phone shutting off around the lower percentages as a result of the device attempting to prevent damage to the battery. That is what the HOXl was designed to do.
Sent from my One X using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Last night when it did it, as it has before, i was still on 21%.... thats not normal. And this isnt my first android nor first htc, never happened before. Even on my aunts old one s it didnt happen

Do you allow full charges after these "forced shutdowns" occur? This should cause your battery to recalibrate.
Sent from my One X using XDA Premium 4 mobile app

NexusS4gFreak said:
Last night when it did it, as it has before, i was still on 21%.... thats not normal. And this isnt my first android nor first htc, never happened before. Even on my aunts old one s it didnt happen
Click to expand...
Click to collapse
The battery behavior on this phone has been interesting. I have the battery last over two weeks on airplane mode and I've had the battery last just a couple of hours with just a stock setup. There are so many factors that play into this. I work in an area with very little to no signal reception and my battery life goes crazy and the phone can get really hot while I'm there so I've seen the best and worst.
What I do to counteract this bad behavior:
1. Charge prior to 40% (I've had the phone go from 40% to zero instantly before)
2. Consider your signal reception and either try out different radios or use airplane mode to reduce erratic battery drain
3. Install a 3rd party app like batterycalibration (https://play.google.com/store/apps/details?id=com.nema.batterycalibration&hl=en) and use that when things get hairy (I calibrate every two weeks or so and that does the trick for me.
My phone has been like this since I pulled it out of the box. With a little management, it is just fine. You have seen it before but I'll say it again, you have to get through a few charge cycles when flashing a new Rom to get back to normal.
Hope this helps. It works for me and I work in a cell phone reception hell.

NexusS4gFreak said:
Ive had my htc one x for maybe 5-6 months which is almost the longest ive ever been on one phone and i love(d) it, but its always been doing something very strange and aggravating that seems to be getting worse. Battery drain has always been a problem for me with this phone but ehh i can deal with it, but once my phone gets down to about 14% which is does often because of the draining it starts acting real funny with its power and sometimes goes from 14 down to 5 in an instant literally out of no where and as soon as i plug up itll go right back to 13, or itll shut down entirely at 14% but i can just cut it back on, or itll shut down in the middle of me doing something and i have to charge it for about 5-10 minutes before itll even come back on. The latter happened last night btw. No matter what combination of roms/kernels i try this always seems to be a problem. I really cant deal with this anymore and its to the point where i wanna throw my phone into a wall and just buy another one, which im seriously thinking about doing at this point. If such thing has happened to anyone before or you have insight on this can you please help before i just give up hope completely.
Click to expand...
Click to collapse
When a new ROM or kernel is flashed you need to let battery settle for at least 48hrs before you get super worried about battery. If possible during that time let device fully discharge then charge up to 100. Please use a battery monitoring app and then see what's causing the issues. With proper config hoxl will get good battery life. There is always the chance its hardware issue but doubtful as battery prolly would of completely failed by now. Also check your screen brightness settings. Hope this helps
Senseless Power Unlocked

For example
Senseless Power Unlocked

Madcat8686 said:
The battery behavior on this phone has been interesting. I have the battery last over two weeks on airplane mode and I've had the battery last just a couple of hours with just a stock setup. There are so many factors that play into this. I work in an area with very little to no signal reception and my battery life goes crazy and the phone can get really hot while I'm there so I've seen the best and worst.
What I do to counteract this bad behavior:
1. Charge prior to 40% (I've had the phone go from 40% to zero instantly before)
2. Consider your signal reception and either try out different radios or use airplane mode to reduce erratic battery drain
3. Install a 3rd party app like batterycalibration (https://play.google.com/store/apps/details?id=com.nema.batterycalibration&hl=en) and use that when things get hairy (I calibrate every two weeks or so and that does the trick for me.
My phone has been like this since I pulled it out of the box. With a little management, it is just fine. You have seen it before but I'll say it again, you have to get through a few charge cycles when flashing a new Rom to get back to normal.
Hope this helps. It works for me and I work in a cell phone reception hell.
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Ive done all three methods youve mentioned before and still same thing. Also im on 3/4 bars with lte 90% of the time so no reception issues here. And with my current setup ive been running it for about 2 weeks.

DESERT.TECH said:
When a new ROM or kernel is flashed you need to let battery settle for at least 48hrs before you get super worried about battery. If possible during that time let device fully discharge then charge up to 100. Please use a battery monitoring app and then see what's causing the issues. With proper config hoxl will get good battery life. There is always the chance its hardware issue but doubtful as battery prolly would of completely failed by now. Also check your screen brightness settings. Hope this helps
Senseless Power Unlocked
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Ive always let the rom settle in and i constantly maintain the brightness on around mid level (mirror screen protector so i cant go too low) but its not just one rom or a few, its with every rom i flash ad that consists of most roms available for this device

The battery behaviour you described is completely normal if you understand how a battery of this type works, and if you understand how the software (especially the display of battery percentage) works in conjunction with it.
Sent from my Evita

timmaaa said:
The battery behaviour you described is completely normal if you understand how a battery of this type works, and if you understand how the software (especially the display of battery percentage) works in conjunction with it.
Sent from my Evita
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So youre telling me having the phone get to 22% and instantly drop to zero and power down is normal? Makes no sense at all. Also i cant get it to charge too 100% for anything. So if theres no fix to this, anybody want a one x with a troublesome battery?

What I'm saying is the battery percentage displayed by the software is never exact, it's only an estimate based on the voltage level of your battery. Your battery sounds like its long term life (capacity) has been decreased over time and possibly bad treatment (allowing the device to discharge too much too many times).
Sent from my Evita

NexusS4gFreak said:
So youre telling me having the phone get to 22% and instantly drop to zero and power down is normal? Makes no sense at all.
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Depends on what you define as "normal". Such behavior is certainly not unheard of (although you particular collection of symptoms may point to a more serious issue, which I'll get to later). Couple things you have to remember: the battery meter is far from accurate. Being off by 10% or more is not unusual (completely normal). So jumping from 5 to 13% as you mentioned is not out of the question. The battery voltage is not actually jumping around, just the % battery number that the phone is assigning to various voltage readings. Reading errors happen, and if a jump is noticed, its just the meter correcting itself.
Which brings us to the other point that should be kept in mind: the battery % is not a "real" measurement. Its just a number assigned to various voltages to give the average person a sense of how much battery is left. Its a completely fabricated and artificial measure that just gives some relative sense of when a user should charge their battery. Phone makers just decided to use a system that average people would understand, like the fuel gauge on a car. Zero doesn't really mean zero (or anywhere close), but reporting in voltages would make no sense for most folks. Also, as we all well know, just because (for example) it took you 12 hours to drain the phone to 50%, does not necessarily mean the phone will last another 12 hours to drain the remaining 50%. It all depends on what you are doing with the phone during that time. Which leaves the question: What does the % battery really mean? Really, not a heck of a lot.
On the other hand, the battery failing to charge to 100% is troublesome, as is the apparent frequency of the meter drops and the fact that the issue remains after various ROM flashes. Leads me to believe there may be some hardware issue going on.
The short answer: IMO while some of the individual symptoms are not unusual, the seeming frequency (you haven't exactly quantified this, but it seems relative frequent just based on your descriptions) may suggest a larger issue, but its not certain.

Thanks it explained a lot but it happened again today, went to the store with ~36% on the meter and walked out, haven't touched it at all, phone was completely dead. Tried to charge and it went to 6% and stopped charging, all signs showed it was charging but it was stuck on 6. Then it started climbing again and reached about 16% and actually started losing charge while on the charger. Switched over to my portable battery charger i just got and it held the charge at about 5% for ~30 minutes, which is what it was when i plugged it in and started to charge, then it stopped againand during the whole process the phone was getting very hot. Yea im getting a new phone :/

New T-Mobile G5 - poor battery life/unlock

Hi guys, wondering if anyone can help
I bought a new unlocked T-Mobile LG G5 from ebay last week for my wife, after buying it I didn't realize that the unlock code is a software unlock, not a SIM unlock, and that I am not able to flash to the stock LG firmware if I want to keep the unlock on hand.
I was looking at flashing to stock because the battery life is quite poor for a new phone, much worse than my S7 Edge, even though she doesnt do anything crazy on it. Are there any tips or tricks to improve the battery life, its using H83020i_un software with what appears to be the regular/default T-Mobile stock apps...
Any help would be appreciated, either regarding the battery, the unlock, or both. Also, will I get any OTA updates, and if I do will it re-lock the phone? Im in Canada btw
Thanks

There is a thread covering all the ins and outs of the 20i_un custom SIM unlock ROM. Everything about locking and updates is thoroughly discussed 1 thread up from this one.
About battery life, that ROM shouldn't be impacting battery life. You should get 4 hours of screen on time (roughly) per charge. If that's not enough to get you through the day, then this isn't the phone for you.
If you aren't getting 4 hours of screen on time, something is wrong. It's not the ROM because the ROM is PROBABLY the stock ROM with 1 small modification for SIM unlock.
Things like Facebook are NOTORIOUS battery drainers so if you run a lot of apps like that, they could be hurting you. Have you looked at your battery stats? Do any apps jump out as taking up a lot of battery? Is it the Android system that's using the battery?
Android's battery stats chart will tell you a lot about what it using your battery. We'd need to know what it is before we could suggest fixes.
Also...be sure to leave the seller negative feedback on eBay. This phone was misrepresented on eBay, even after they were aware if was not factory sealed and had been modified. They lied about how many they had too, saying they were nearly out of stock at least a thousand units ago. That's deceptive advertising. They lied to multiple people about putting that second clear seal over the broken factory seal. And they contacted at least me outside of the eBay message system which is a blatant violation of the eBay terms of service. Even if you keep it, the seller deserves negative feedback.

Skipjacks said:
There is a thread covering all the ins and outs of the 20i_un custom SIM unlock ROM. Everything about locking and updates is thoroughly discussed 1 thread up from this one.
About battery life, that ROM shouldn't be impacting battery life. You should get 4 hours of screen on time (roughly) per charge. If that's not enough to get you through the day, then this isn't the phone for you.
If you aren't getting 4 hours of screen on time, something is wrong. It's not the ROM because the ROM is PROBABLY the stock ROM with 1 small modification for SIM unlock.
Things like Facebook are NOTORIOUS battery drainers so if you run a lot of apps like that, they could be hurting you. Have you looked at your battery stats? Do any apps jump out as taking up a lot of battery? Is it the Android system that's using the battery?
Android's battery stats chart will tell you a lot about what it using your battery. We'd need to know what it is before we could suggest fixes.
Also...be sure to leave the seller negative feedback on eBay. This phone was misrepresented on eBay, even after they were aware if was not factory sealed and had been modified. They lied about how many they had too, saying they were nearly out of stock at least a thousand units ago. That's deceptive advertising. They lied to multiple people about putting that second clear seal over the broken factory seal. And they contacted at least me outside of the eBay message system which is a blatant violation of the eBay terms of service. Even if you keep it, the seller deserves negative feedback.
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Yeah I did notice that about the seal when I opened mine.
I noticed the battery drains alot while idling, not sure what could cause that though...

Well...look at the battery stats charge in the settings. It will tell you what's using the battery.
Are you using the Always On Display? If so that's your answer. That chews up battery like crazy at around 0.8% per hour. Conversely I get 0.1% to 0.2% drain per hour on idle with the Always On Display turned off.
I'm also a fan of Greenify for putting the phone into Doze mode after minutes rather than an hour or two like Android does natively. I'm not a huge fan of Greenify as a task killer as that's counterproductive in most cases. Though I do let it kill an annoying persistent Major League Baseball app that I like but that doesn't know when to shut up.

Skipjacks said:
Well...look at the battery stats charge in the settings. It will tell you what's using the battery.
Are you using the Always On Display? If so that's your answer. That chews up battery like crazy at around 0.8% per hour. Conversely I get 0.1% to 0.2% drain per hour on idle with the Always On Display turned off.
I'm also a fan of Greenify for putting the phone into Doze mode after minutes rather than an hour or two like Android does natively. I'm not a huge fan of Greenify as a task killer as that's counterproductive in most cases. Though I do let it kill an annoying persistent Major League Baseball app that I like but that doesn't know when to shut up.
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Always on display is off, using greenify, helped a bit, but I notice that most of the battery usage % is "Phone Idleing"

Agree, in the past month or so, my LG G5 battery life has become noticeably worse. The top two battery burners are Android OS and Phone Idle. I've tried multiple hard resets, clearing cache, etc, but nothing seems to help. I haven't shut off the always on display, but it wasn't shut down before. Something has changed recently, maybe in the last update, but the battery life is terrible now. Any help would be appreciated.

hawkintx said:
Agree, in the past month or so, my LG G5 battery life has become noticeably worse. The top two battery burners are Android OS and Phone Idle. I've tried multiple hard resets, clearing cache, etc, but nothing seems to help. I haven't shut off the always on display, but it wasn't shut down before. Something has changed recently, maybe in the last update, but the battery life is terrible now. Any help would be appreciated.
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If youre on 20k update, then I agree. Battery life was fine until 20k update. Now I cant get through lunch. Battery stats is not helpful. Shows no issues.

coreygator said:
If youre on 20k update, then I agree. Battery life was fine until 20k update. Now I cant get through lunch. Battery stats is not helpful. Shows no issues.
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I have had no change in battery life since updating to 20k

Skipjacks said:
I have had no change in battery life since updating to 20k
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Thanks for the info. Will try a factory reset and see if that helps.

coreygator said:
If youre on 20k update, then I agree. Battery life was fine until 20k update. Now I cant get through lunch. Battery stats is not helpful. Shows no issues.
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Do u know how to downgrade?
Sent from my LG-H830 using Tapatalk

Were you ever able to solve the battery problem?

There are a couple of comments on the previous page that Phone Idle is a large consumer. That happens when you pick the wrong carrier, and the signal is weak most of the places you spend time. When that happens, it's assumed that the phone's signal will be weak at the tower, so the phone transmits at maximum power - and that kills a battery fast. Choose a carrier that has solid green in the battery stats (tap the graph to get to that page, then scroll down). That's the first thing you should do when choosing a carrier - not that they're the only ones carrying this great new phone so far, but that they give you a solid signal where you spend most of your time. And it's exactly what most people don't do (because they're not aware of it). (And the phone matters too - some just have more sensitive receivers than others.)