Develop Bugs

Greatly improved battery life (CDMA)

Last night I restored my phone using the factory image. For some reason I anticipate an OTA soon so I wanted to be ready. Anyhow, before I suffered from the battery drain bug. I forgot to charge my phone last night, and didn't realize it until I got in my car and put it on the car charger and it said 89%. My first thought was that my battery drained over 10% in the hour I was getting ready and not using it! Then I went into battery settings and found out I never charged it.. then I found some pleasant... well, I'll just show you.
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As you can see, I lost less than 5% battery during the 6+ hours my phone was unplugged. I had the phone in the living room charging while watching a movie. Then I unplugged and used it for about 20 minutes in the bedroom which accounts for the first rapid drop in battery. But after I set it down, the phone went into a coma. And I can't see exactly, but it looks like it was only 2 or 3% which is great!
Not sure what changed, I still have the same apps installed, even Facebook. I did, however, NOT disable VZ backup assistant like I normally do. Maybe that is what causes the OS to go bonkers? Thoughts?
Sent from my Galaxy Nexus using XDA App

I got about 20 hours out of mine yesterday (extended battery) with moderate usage (texting, ebay, facebook, web) This is after unlocking the bootloader and rooting. Unlocking the bootloader resets the phone to factory state. I've read a few other posts around the web where battery life is greatly improved after a factory reset. Android OS is still the main things devouring my battery, but I almost don't care with the performance I'm getting. I should also mention that I wiped battery stats from CWM and then calibrated the battery on first charge.
I'm no dev, so I don't know why a reset would help. Then again, maybe it was wiping battery stats and calibrating that helped me. Just my $.02

How did you calibrate the battery?

There's a free tool in the market that will calibrate for you. Have to be rooted though. Just search for calibrate.
Sent from my Galaxy Nexus using XDA App

Surprised this isn't getting more acknowledgement. Any one else experience the same after a reset?
Sent from my Galaxy Nexus using XDA App

Guess maybe I'm one of the lucky few...I've always had this type of battery life. The phone just sips power while the screen is off.
While it is on...well that's different. I keep the brightness high and get about 2-2.5 hours of screen time before it powers off.

The interesting thing here is that it seems that you have the Android OS constantly waking up the phone but yet it still barely uses battery.
Do you have location services turned on or off?

Turned on. I noticed that too but the overall awake time is low. Usually it would be over half of the entire time on battery, sometimes 100%.
Sent from my Galaxy Nexus using XDA App

I used 50% in about 3 hours on my extended battery.
fml.

Great battery life, but you didnt really use your phone much.
Your "Screen on" is only about 15% of those 6 hours. Which ends up being about an hour.
Still, none the less, great battery life/power consumption.

rpnunez said:
Great battery life, but you didnt really use your phone much.
Your "Screen on" is only about 15% of those 6 hours. Which ends up being about an hour.
Still, none the less, great battery life/power consumption.
Click to expand...
Click to collapse
I think you missed the point. I said this was done while I was sleeping. Many people are experiencing extreme battery drain even when they aren't using the phone, as was I. After restoring from the factory image, my issue seems to be gone.
Sent from my Galaxy Nexus using XDA App

kangxi said:
I think you missed the point. I said this was done while I was sleeping. Many people are experiencing extreme battery drain even when they aren't using the phone, as was I. After restoring from the factory image, my issue seems to be gone.
Sent from my Galaxy Nexus using XDA App
Click to expand...
Click to collapse
I unplugged my phone at 11:30 pm with 98%, woke up at 7:30 am today and it dropped to 76%. So a 20% drop in 8 hrs with the phone just sitting there with wi-fi on and no apps running. It'd be very interesting to see if a factory restore would help.
How's the battery life now that you're using it?

Im thinking of unlocking and rooting mine tonight. havent had a moment to read the walkthrough just yet.

i noticed this too last night/today. i went to sleep after installing bugless beast 4.0.3 cdma, left it off the charger, and today i saw the chart was pretty much a flat line. i don't recall the exact times, but i'll try to time it out. about 8 hours
i wonder if all the initial extreme battery drain reports are due to the 'wowanewphone' effect, where you are molesting your phone 24/7, as opposed to the typical day-to-day use you'll eventually fall back into

[Q] Strange battery issue [SOLVED]

I bought my HTC One X on 3rd April and did a full charge (100%) on day one. I think it took around 3 hours for the battery to get fully charged.
Since then the battery has been performing pretty well, giving me around 10 hours of no-charge time, with screen set at auto brightness, 3G and auto-sync ON, and nominal usage.
My charging cycle:
1) My phone battery is below 20% when I wake up, so I charge my phone in the morning before leaving for office, for almost 1 hour; this gives me a battery level of around 40%
2) With no charging on my way to office (which is a 15 minute drive from my place), I plug the phone to a wall charger on reaching office till the battery reaches 100%; this takes around 2 hours to complete; sometimes when I have to go for meetings and all, I pull out the charger and resume the charging once I'm back on my desk
3) I don't charge the phone again during the day
The problem:
Today in the morning, the battery showed a 2% level. (and I wasnt surprised because I watched some youtube videos before sleeping yesterday night and the battery level was 20% back then)
I plugged it in a wall charger; after a while I notice a message on the screen...something like: 'Your phone is using more power than being supplied by charger. Please close some applications blah blah' So I flicked-off a couple of 'Recent Apps'. The battery still read 2%
After 1 hour, I saw the battery had reached 4% only; so I thought I better power off my phone and let the phone charge with no power being consumed.
But to my surprise, when I turned on the phone after 1 hour.....the battery still read 4%!!!
My phone's constantly plugged in since morning (8 am) and till now, (10.30 pm) the battery has reached 40% level only, with no phone usage at all.
One clear problem: The phone is not getting charged while it is off (although the red LED is glowing). And the battery level is taking ages to go up.
I'm using the stock ROM, no rooting.
Is there anyone who has faced anything similar.
I would also like to know is there any graphic or some symbol on the screen when you try to charge the phone while it is turned OFF?? My phone only shows the red LED glowing.
Please help.

Unfortunately there is no way of monitoring how much your phone is charging while off... I remember I've had a battery drain once and it only charged 20% in like 4hrs, which is not as bad as the problem you have, but still not ok.
What I did was: hard shutdown (holding down the power button) the boot, turned off normally and plugged it in while off. It took another 3hrs for the green led to show up (was at about 40%), but I gave it one more hour to make sure it's really 100%. That fixed the issue for me.
Anyway, if your phone doesn't charge when off, there's definitely something wrong and you should return it...
Even though LiPoly batteries are supposed to have no memory effect, it's recommended you charge it to 100% and use it to about 8% for the first couple if circles. Did you do that?
If you were rooted I'd recommend to wipe battery stats, but I guess that's not an option as you might want to return it...
EDIT: could you post a screenshot of the battery graph? (Settings->Power->Usage)

Thanks a lot buddy
dobbi10k said:
Unfortunately there is no way of monitoring how much your phone is charging while off... I remember I've had a battery drain once and it only charged 20% in like 4hrs, which is not as bad as the problem you have, but still not ok.
What I did was: hard shutdown (holding down the power button) the boot, turned off normally and plugged it in while off. It took another 3hrs for the green led to show up (was at about 40%), but I gave it one more hour to make sure it's really 100%. That fixed the issue for me.
Anyway, if your phone doesn't charge when off, there's definitely something wrong and you should return it...
Even though LiPoly batteries are supposed to have no memory effect, it's recommended you charge it to 100% and use it to about 8% for the first couple if circles. Did you do that?
If you were rooted I'd recommend to wipe battery stats, but I guess that's not an option as you might want to return it...
EDIT: could you post a screenshot of the battery graph? (Settings->Power->Usage)
Click to expand...
Click to collapse
Hard shutdown worked!!!
I just did as you suggested...and it worked...my battery shows 80% level now...plugging it for charging now...would keep you posted on the progress ...
Now I realise where the problem was...
On the battery usage screen , it showed "18 hours on battery"...whereas it was being charged ...I think the battery usage app/function was stuck...

Thanks again
Please find the successful battery charge screenshot below
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xshauryax said:
Please find the successful battery charge screenshot below ]
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Click to collapse
I'm not sure why, but I only see a little black box when opening your screenshot.
The battery app isn't literally stuck. That happens when you:
turn off your phone -> charge it -> unplug it -> boot it.
Another reboot will usually solve this problem.

HOX drains more than charger is giving
I think it will be a good place to post it. Last week I was testing GPS on HOX. I was very disappointed when I saw that my battery is draining despite of connected car charger ( some kind of cheap chinese usb chargers ). My settings Autobrightness ON, Autosync ON, Data 3G ON on AHRD 5.1. Oh and I was testing Google Navigation. Does anyone have similar problem? I don't know if it is fault charger or HOX need so much energy when navigating.

p3v4x said:
I think it will be a good place to post it. Last week I was testing GPS on HOX. I was very disappointed when I saw that my battery is draining despite of connected car charger ( some kind of cheap chinese usb chargers ). My settings Autobrightness ON, Autosync ON, Data 3G ON on AHRD 5.1. Oh and I was testing Google Navigation. Does anyone have similar problem? I don't know if it is fault charger or HOX need so much energy when navigating.
Click to expand...
Click to collapse
It happens with most of us. Because, the screen takes more power sometimes more than the power provided by a car charger. Reduce the brightness of screen instead of AUTO brightness. It should help.

Battery Problem (Charging and Draining)

I got my Note 10.1 2014 Edition yesterday. I noticed out of the box that it was draining extremely fast. When I put it on the charger, it charged very slow.
I put the tablet on the charger while I slept (6hrs), the tablet did not even charge fully. Only to 88%.
Anyone have battery drain or slow charging issues?

it's possible you have a bum unit. are you using the supplied charger and cable? some cables aren't high enough quality to sustain the higher charge rate and of course some chargers don't output enough power.

madsquabbles said:
it's possible you have a bum unit. are you using the supplied charger and cable? some cables aren't high enough quality to sustain the higher charge rate and of course some chargers don't output enough power.
Click to expand...
Click to collapse
Yes, I am using the 2 AMP charger. I have it fully charged now. I am going to test it for the next day or so and it see how it performs. I will report back.

Mine also seems to charge really slow and drain way faster than my 2012 model. I noticed that the AC adapter gets really hot. I've tried with two USB cables and no such luck in improving anything. I don't know what's going on here. I need to some objective comparison testing but this just doesn't feel right to me.
I couldn't get to 100% on the initial charge until after I turned it on. It kind of just hung there in that 88% area.

Stocklone said:
Mine also seems to charge really slow and drain way faster than my 2012 model. I noticed that the AC adapter gets really hot. I've tried with two USB cables and no such luck in improving anything. I don't know what's going on here. I need to some objective comparison testing but this just doesn't feel right to me.
I couldn't get to 100% on the initial charge until after I turned it on. It kind of just hung there in that 88% area.
Click to expand...
Click to collapse
I did get mine to charge 100 percent. This is where I am now...
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so far I'm at 1 day 6.5 hrs with 5.25hrs screen and at 38%. not ag good as the old note, but the old gn101 wwasn't as purdy!

Charging and drain
Mine took a charge over night but the battery drains fast. I noticed that the auto brightness is set way too low. Perhaps that's how they got the claimed hours of use.

It does charge pretty slow, I'm surprised they didn't include a micro usb 3.0 like the note 3. I noticed last night that when I was plugged in to the included charger and streaming a video from chrome, it actually drained battery rather than charged. Even using it with lighter tasks significantly slows down charging, making it almost a requirement to charge it overnight.
It drains relatively quickly but if i can get 6+ hours of screen on time, between that and my phone it should last me more than a day of heavy use.

until the battery drains to 80% it's at trickle/slow charge. below 80 it charges full power. mine took 3.5hrs from 20 to 100. it took 2hrs 20 min to go 20 to 80 then 1.5 hrs for the last 20%.

Charging and drain
I noticed it drains quickly for the first 15 or 20% but lasts much longer after that. So I can only think that it's not reading the charge evenly.

I experienced a similar issue today. Had it plugged in overnight and most of the morning. Went to unplug it earlier and it was frozen at 83%. That was after about 12 hours of charging. I plugged it in around 40% last night.
The first two nights charged to 100% fine.

when i first got the note it kept getting stuck at 64% but the next day i charged it completely.
this has definitely got to be the reason one of those reviews said it's 7hrs to full charge.
i haven't taken the update yet so i'm assuming the some of you guys have and it's not changed anything. i haven't had any issue yet, but i also haven't had a need to recharge yet.

Old thread, but I am running into two issues:
1. I agree on the drain, but will use for another week to see how things go. So far the battery drain is considerably more than the iPad 4 and Dell 5130.
2. I can not find a spare cable that will allow slow charge through a computer USB. Cables allow MTP, but there is an X on the charge symbol. I tried charging while asleep and when shut off and same result. Not charging.
One of the reasons I got this was not to have to rely on keeping the charger with me like some other Android tablets.

Quick charge problem?

Guys, just quick question. Today morning I plug my phone to the original charger (phone was totally discharged (switched off)) and after boot it said me "Quick Charging, fully charged after 3 hours". Bloody hell, is it any type of joke? I thought that quick charging feature is about quick charging, isn't it? Next problem which I have last time (the day before yesterday probably) was that phone told me "fully charged after 1 hour and 20 minutes" but it took almost 2 hours. I use original nexus charger.
Has anyone the some experience with this type of "fast" charging?
Thanks in advance.

My phone charges slowly only when i use it plugged in to the wall...Make sure the slow charge is a software issue and not a hardware,try to calibrate the battery and if it doesn't work try to flash the stock google images (do a backup before flashing),finally,send as a screenshot of your battery stats while charging to see how bad your device charging rates are!...

cizi said:
Guys, just quick question. Today morning I plug my phone to the original charger (phone was totally discharged (switched off)) and after boot it said me "Quick Charging, fully charged after 3 hours". Bloody hell, is it any type of joke? I thought that quick charging feature is about quick charging, isn't it? Next problem which I have last time (the day before yesterday probably) was that phone told me "fully charged after 1 hour and 20 minutes" but it took almost 2 hours. I use original nexus charger.
Has anyone the some experience with this type of "fast" charging?
Thanks in advance.
Click to expand...
Click to collapse
If your screen is on or the battery is warm, it will charge much slower.
I suggest you leave the screen turned off and let it charge, and check back in 30minutes to see if the charge time has updated to reflect a faster charging rate.

Should charge perfectly fine if you have the screen off and don't use it. I regularly go 15% to 90% in 60 minutes.
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This test was with airplane mode on but does the same with it off.
Sent from my Nexus 5X using Tapatalk

My stats
So during charging I took these pics. The language is czech but I hope you will understand
images hosting

cizi said:
So during charging I took these pics. The language is czech but I hope you will understand
images hosting
Click to expand...
Click to collapse
It's cause you started at near 40%. All fast charging has basically three levels that tapers from fastest to slowest. Basically in simplest terms it's 0-40% full fast charging, 40-80% regular charging, 80-100% slowest. There's actual numbers with mAh readings for exact details but no need for that. It does this for temperature control. It's also why a lot of fast charging tech advertise 0-80% times. That last 20%, especially 90-100%, is way slower than any other part. So to get the most of fast charging it's actually best to use your phone down to a low reading like 15-20%. As you can see, you end up wasting time trying to charge like you did compared to my screenshots. Essentially you're able to use you phone longer and yet be plugged in for a short period.
Sent from my Nexus 5X using Tapatalk

EeZeEpEe said:
So to get the most of fast charging it's actually best to use your phone down to a low reading like 15-20%. As you can see, you end up wasting time trying to charge like you did compared to my screenshots. Essentially you're able to use you phone longer and yet be plugged in for a short period.
Click to expand...
Click to collapse
Mathematically that is correct, but for longer battery life expectancy (over time), they suggest you charge 50-90% even though it is less efficient in terms of amount of time spent charging.

So I tested charging for one hour starting at 40% and it actually did a little better than what you're getting. Went 40-93% in 60 minutes.
I still suggest starting around 15-20% though because as you can see, 60 minutes of uninterrupted charging gets you to 90% whether starting at 15% or 40%.
Sent from my Nexus 5X using Tapatalk

Guys, thanks for your effort. I will be trying to find the best way of charging. Even though energy efficient could by better in Google's Nexus I think. I have problem to stay charged 24 hour in a row. Maybe the reason is that I did just maybe 10 charging cycles and the battery is still to new and is still formatting, who knows.

cizi said:
Guys, thanks for your effort. I will be trying to find the best way of charging. Even though energy efficient could by better in Google's Nexus I think. I have problem to stay charged 24 hour in a row. Maybe the reason is that I did just maybe 10 charging cycles and the battery is still to new and is still formatting, who knows.
Click to expand...
Click to collapse
Yeah if you check the battery life thread you'll see people getting various hours of battery usage. Personally, I'm always topping off when I get home from work for about 30 minutes or so (I always shower when I get home) and end with plugging in while sleeping.
Sent from my Nexus 5X using Tapatalk

cizi said:
Guys, just quick question. Today morning I plug my phone to the original charger (phone was totally discharged (switched off)) and after boot it said me "Quick Charging, fully charged after 3 hours". Bloody hell, is it any type of joke? I thought that quick charging feature is about quick charging, isn't it? Next problem which I have last time (the day before yesterday probably) was that phone told me "fully charged after 1 hour and 20 minutes" but it took almost 2 hours. I use original nexus charger.
Has anyone the some experience with this type of "fast" charging?
Thanks in advance.
Click to expand...
Click to collapse
in my experience, everytime I had trouble with fast charging (Zenfone and Nexus 5x) was a matter of faulty cable. try to replace your old one. in most cases, processors are kinda super sensitive about the "health" of the cable and won't let the magic happen it's happening to me in these days with my QC2.0 car adapter.

Idle Battery Drain - Even When Device Turned Off

Hi,
Really strange one and hoping someone can help.
I have the 10.1 Exynos, and I lose ~20% battery per day when I leave the tablet alone, even when it is switched off.
What I have tried,
1. Replacing the battery - same symptoms with a brand new battery
2. Replacing the Micro USB charging port - same symptoms with both batteries
I did a further experiment with both batteries, old and new,
1. Charge to 100%
2. Leave disconnect battery cable and leave the device for 48 hours
3. When I plug the cable back in, I have 99% charge on both batteries.
4. When I leave the device idle with the battery cable plugged in, again I lose about 20% per day when the tablet is off.
I'm really confused right now, and would like to resolve this issue so I can hand over the old tablet to a relative, as it is still a very capable device.

hello
switching off does'nt disconnet battery
some programs go on ( time, date, ..) with pseudo capacitive battery
a resistive element is still connected (a component is deffective)
regards

Understand, but 20% is a lot of battery use for an idle tablet.
Do you think there is any hope of fixing this?
Could it be something that can be re-soldered perhaps?

Are you rooted? Try Better Battery Stats. It can show what is running while it's supposed to be idle. Also, try Greenify.
Cheers,
Rich
Zico 10 said:
Understand, but 20% is a lot of battery use for an idle tablet.
Do you think there is any hope of fixing this?
Could it be something that can be re-soldered perhaps?
Click to expand...
Click to collapse

I am rooted, and no app shows up in battery stats BECAUSE THE TABLET IS DRAINING BATTERY WHILST IT IS SWITCHED OFF.
Please read the thread before you comment next time.

@Beut
Do you have any ideas??

Zico 10 said:
@Beut
Do you have any ideas??
Click to expand...
Click to collapse
Try to resolder the battery connector

Beut said:
Try to resolder the battery connector
Click to expand...
Click to collapse
Do you have any tips or guides on how to do this?
Would applying conductive wire glue work?

You can try but it doesn't make strong bond. The epoxy conductive glue may work if you don't know how to solder.
However, the silver conductive wire glue, sold in Amazon around $3/ 0.2 ml syringe works very well to fix the loose battery cables which causing intermittent power, restart, battery quick discharge ( actually not quick discharge: loose battery cables will cause the tablet read battery capacity incorrectly ).
If your battery drops then movement later it goes up or after restart, 99% you have a cracked battery connector on mainboard or loose battery cables.
This is the case, the cables doesn't make contact : two red cables ( positive ) have no contact, you will see the problem of not charging.
If one positive ( red ) or negative ( black ) cable loose its connection, your battery might drop 40 to 50% instantly.
If they're partly make contact, you might experience a boot loop as the tablet doesn't have enough power to start the system.
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This is the original battery cables before apply the glue
After applied glue, smear the glue to inside of cable as much as possible, clean with alcohol the extra conductive glue between cables , otherwise you will have shorted circuit and you might destroy the mainboard. Later on, you can remove the battery cables easily, that's why this conductive wire glue is not a perfect solution to substitute soldering.
I did fixed a Note 2014 today, it shut down at 28%. Applied the conductive glue to all six cables, reconnected it to battery connector and charger.
You can speed up the healing process by heating it with a hair dryer for a few minutes.
Do you know what I get ? The battery icon shows up with 88%, go up 60% when all cables make a solid contact to all pins of battery connector as the conductive glue fills up
all gaps between cable's terminals and pins.

switched off you mean you select the "Power Off" option?, or switched off meaning you press the power button and screen goes off?,
if the first option then I suspect when you charge your tablet its not "really" charging it trys to feed the battery but at some point it takes no more charge and it will fake the "100% charge value", and on a reboot it reads the stats again and says oh 70% charged, in anycase this could be because you are using a bad cable or a bad USB charger, try using the stock cable and charger if possible, if problems still exist try to reseat the battery by opening the tablet and unplug / replug the batter in.
if the second option then something is causing wakelock

!!!before touching the hardware!!!
Zico 10 said:
Hi,
Really strange one and hoping someone can help.
I have the 10.1 Exynos, and I lose ~20% battery per day when I leave the tablet alone, even when it is switched off.
What I have tried,
1. Replacing the battery - same symptoms with a brand new battery
2. Replacing the Micro USB charging port - same symptoms with both batteries
I did a further experiment with both batteries, old and new,
1. Charge to 100%
2. Leave disconnect battery cable and leave the device for 48 hours
3. When I plug the cable back in, I have 99% charge on both batteries.
4. When I leave the device idle with the battery cable plugged in, again I lose about 20% per day when the tablet is off.
I'm really confused right now, and would like to resolve this issue so I can hand over the old tablet to a relative, as it is still a very capable device.
Click to expand...
Click to collapse
!!!BEFORE TOUCHING THE HARDWARE!!!
TRY first just update or upgrading OS or maybe better downgrading/ flashing back to stock.
if doesn't work?
Then give a try "re-partitioning" your phone. Try searching for sometimes called "Repair Files"
You may need your "Brain" to do that. Google is "always there to help us" how.
coz I am not responsible for that. just giving my Idea
Goodluck!!! :good:

CarCE12 said:
!!!BEFORE TOUCHING THE HARDWARE!!!
TRY first just update or upgrading OS or maybe better downgrading/ flashing back to stock.
if doesn't work?
Click to expand...
Click to collapse
That was the first thing I did, and testing shows that the issue is definitely hardware related instead of software - for example, the battery will drain even when the device is powered off!
I have tried the advice of @Beut as well, however it still drains unfortunately.
I still have the tablet, but unfortunately it is largely useless to me. Though I still can't bring myself to throw it away.