Develop Bugs

WTH! 30% drop in battery almost straight line??

Guys, the GNex I am using is VZW LTE device.
I know its battery issue and have been playing around to find the best balance to use both LTE/all awesome features while keeping the phone alive for sometime.
So far my set up ,before I went bed yesterday, was pretty satisfactory: Franco kernel 15.1 + Gummy 0.7 + Hybrid Radio .
Before I go sleep, it has 31%.
This morning, after 5.5 hours sleeping, I press the phone. It is DEAD, seems long time ago.
Took a screenshot of the battery usage, here it is
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https://picasaweb.google.com/lh/pho...YmyPJy0liipFm0?feat=directlink&full-exif=true
Any idea why this may be the case?
I tried to look at the wakelock info but because the phone was dead, I can't really see what was there using "since unplug".
May run it down today and monitor why =((

Well, the last drop was when you seemed to have a really bad signal for some reason and the first drop was when you were actively using the device, so you should look at the apps you were using and what you were doing at the time. Outside of these two drops the device had a normal signal and normal battery drop.

kristovaher said:
Well, the last drop was when you seemed to have a really bad signal for some reason and the first drop was when you were actively using the device, so you should look at the apps you were using and what you were doing at the time. Outside of these two drops the device had a normal signal and normal battery drop.
Click to expand...
Click to collapse
Thanks . I do acknowledge the active use part and not surprised. What bugs me is that it was on wifi at last 30%.... so with wifi on,no usage,a change in radio signal can cause this drainage ? I think this is not normal
Sent from my Galaxy Nexus using Tapatalk

jiwengang said:
Thanks . I do acknowledge the active use part and not surprised. What bugs me is that it was on wifi at last 30%.... so with wifi on,no usage,a change in radio signal can cause this drainage ? I think this is not normal
Sent from my Galaxy Nexus using Tapatalk
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Same has happened to me, and a few others. There are posts about it on Androidcentral. Basically the phone drops the network then spends the rest of its battery trying to reconnect to it. Its possibly an authentication issue. It has happened twice to me. It doesnt happen if you leave the phone in 3G mode. Even with WiFi on, it can happen, because the phone still needs to maintain network connection for phones and data. This is on the LTE Nexus,

jiwengang said:
Thanks . I do acknowledge the active use part and not surprised. What bugs me is that it was on wifi at last 30%.... so with wifi on,no usage,a change in radio signal can cause this drainage ? I think this is not normal
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
With low/no signal, the phone boosts power to the radio and tries to search for the signal. This is normal cellular phone operation and has been for many years.

It's a pretty big drop, but as has been said you can really hammer your battery when your device is searching for signal.

I notice that your screenshot shows wifi on.
Franco 15.1 had a faulty wifi driver that was sapping people's batteries. This is fixed in 15.2. Flash your Franco to 15.2 and those problems should go away immediately. My idle drain is now 2mA.

Have you tried Juice Defender? Give it a shot. It is a big help with standby drain.

z06mike said:
Have you tried Juice Defender? Give it a shot. It is a big help with standby drain.
Click to expand...
Click to collapse
Thanks I started using it now...
Sent from my Galaxy Nexus using Tapatalk

poopooface said:
I notice that your screenshot shows wifi on.
Franco 15.1 had a faulty wifi driver that was sapping people's batteries. This is fixed in 15.2. Flash your Franco to 15.2 and those problems should go away immediately. My idle drain is now 2mA.
Click to expand...
Click to collapse
So you don't see any other issues with 15.2?I seen people reporting more drain on battery or overheat . Those are just anecdotal ?
Sent from my Galaxy Nexus using Tapatalk

Cell Standby 66% battery usage

My battery died in a few hrs today and the culprit seems to be 66% cell standby. I've never experienced this kind of drain before. I'm running the latest Franco Kernel and I'm wondering if anyone else is seeing this?

I just posted something exactly like this earlier in the day. Do you have google chrome and recently updated? I think when I just uninstalled it, it fixed my problem...
Sent from my GT-P7510 using xda premium

would be amazing if you actually posted a screenshot of your usage, with awake time, screen on time, and network state....

Leave your screen on all of the time. It will make the cell standby percentage go down .
On a serious note. what's the time without signal? Just press on cell standby and it will tell you the percentage I think. It sounds like you didn't have coverage and your phone was constantly trying to find it...which would kill your battery fairly fast and probably make your phone warm in my experience.

martonikaj said:
would be amazing if you actually posted a screenshot of your usage, with awake time, screen on time, and network state....
Click to expand...
Click to collapse
I've noticed that juice defender ultimate hasn't been running so maybe this has been a problem I didn't notice, I turned it off because I hate how long it takes to bring 4G back up...
phone has of course been on the charger since I was less than 10% but:
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What did your network level look like over that drain? It looks like you have bad signal, but it shouldn't effect it that much if you're on WiFi the whole time... as noted before, a radio constantly hunting for better 3G/4G signal can really drain the battery.
How much screen on time was that? Probably pretty low?

56% of the time you were without a signal? Where do you live? Alaska? On a serious note though...I'd recommend switching to 2g/3g or wifi when you're having trouble finding a signal.

martonikaj said:
What did your network level look like over that drain? It looks like you have bad signal, but it shouldn't effect it that much if you're on WiFi the whole time... as noted before, a radio constantly hunting for better 3G/4G signal can really drain the battery.
How much screen on time was that? Probably pretty low?
Click to expand...
Click to collapse
screen time was essentially zero, I took a nap and when I woke up phone was near death. :-/

anton2009 said:
56% of the time you were without a signal? Where do you live? Alaska? On a serious note though...I'd recommend switching to 2g/3g or wifi when you're having trouble finding a signal.
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Click to collapse
WOW yeah didn't even see that. There's the drain right there. Your phone is boosting power to the radio to try and get a signal and just obliterating the battery.

anton2009 said:
56% of the time you were without a signal? Where do you live? Alaska? On a serious note though...I'd recommend switching to 2g/3g or wifi when you're having trouble finding a signal.
Click to expand...
Click to collapse
At home, my signal is generally 2-3 bars 4G, maybe we're having tower issues in my area. This battery consumption is definitely not the norm for me. Kind of took me by surprise which is why I posted...

mwalt2 said:
Leave your screen on all of the time. It will make the cell standby percentage go down .
On a serious note. what's the time without signal? Just press on cell standby and it will tell you the percentage I think. It sounds like you didn't have coverage and your phone was constantly trying to find it...which would kill your battery fairly fast and probably make your phone warm in my experience.
Click to expand...
Click to collapse
So it is true that when your phone did not have network connection, it will constantly find coverage and thus account for the awake time in the battery state? Therefore eating up the battery life, even though the screen is off?

oblivionstalker said:
So it is true that when your phone did not have network connection, it will constantly find coverage and thus account for the awake time in the battery state? Therefore eating up the battery life, even though the screen is off?
Click to expand...
Click to collapse
Yes. This is true. The phone pushes more power to the radio also, which drains the battery.
Sent from my Galaxy Nexus using XDA

cell standby a hardware issue???

long time android user, and my GF just upgraded to her first smartphone to the galaxy nexus, same phone i have. and the battery sucked, she had 50% left and went to work and within 2 hours it was dead, so i unlocked/rooted. and installed aokp 3 milestone along with franco krenel to the latest milestone. same rom and kernel i have, and i get atleast 14+ hours on regular use nothing turned off.
her battery status looks like it usally the cell standby to blame, could this be a hardware issue? i completly wiped data/dalvik/battery and did new install, going to try again flashing back to complete stock. but could this be a hardware issue?
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Turn off 4g.

have you checked if you both have the same radio? you can try that
also maybe check hows reception on her workplace

So... she had bad signal. Phone sat there trying to get 4G / hang on to a bad signal. Will drain the battery 100% to 0% in a few hours if you let it do that.

no i haven't tried turning 4g off yet, shouldn't have to i wouldn't think. she lives in seattle and i live 30miles further north of from her, and i don't have a problem with 4g conection. but i'll try that just to see if it gives a different result.

Well I can tell you right now, AOKP gets absolutely HORRID battery life. Try BAMF.
Sent from my Galaxy Nexus using XDA

Download juice defender and set it to balanced. You will see a HUGE difference with standby drain.

If you have a third of the time without signal, I would expect energy to drain a lot, as the radio will keep trying to find a signal and consume way more energy than if it is connected and in stand by.

Smokeey said:
Well I can tell you right now, AOKP gets absolutely HORRID battery life. Try BAMF.
Sent from my Galaxy Nexus using XDA
Click to expand...
Click to collapse
Nothing wrong with AOKP battery

yea im useing AOKP and get great battery on my phone, but not hers, thats why i was wondering if it COULD be a hardware issue, or if this is always a software issue.

Update to 4.04 u will get battery like this.
Sent from my Galaxy Nexus using Tapatalk 2 Beta-6

Sdobron said:
Nothing wrong with AOKP battery
Click to expand...
Click to collapse
Ditto that. It's easy to blame a particular ROM for one's battery woes, but the truth of the matter is it's invariably something else causing the drain.
Sent from my Galaxy Nexus using Tapatalk 2

Her signal is destroying the battery, turn off 4g and if she only does the Facebook thing and messaging do the following
I believe there is/was a setting to turn off mobile data when screen is off
Sent from my Galaxy Nexus using Tapatalk 2

BrianDigital said:
I believe there is/was a setting to turn off mobile data when screen is off
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Click to collapse
Constantly turning on/off mobile data when the screen is off will more than likely drain the battery more than leaving it on. Not to mention that you'll get no background sync or notifications.

teggy6 said:
no i haven't tried turning 4g off yet, shouldn't have to i wouldn't think. she lives in seattle and i live 30miles further north of from her, and i don't have a problem with 4g conection. but i'll try that just to see if it gives a different result.
Click to expand...
Click to collapse
No I think you have to turn it off if its right on that fringe area. Plus lte networks and radios are very immature ans have a lot of years to get fully optimized and tweaked to match current cell coverage performance. You're using a brand new network technology that has a long way to go. Beta testing.

[Q] Wifi Not Sleeping

I posted in the wrong thread earlier but here's the situation. No matter what rom I run, wifi won't sleep. Optimizer is off and wifi on during sleep is set to "only when plugged in". I've rebooted the phone and will post back to see if that fixed the problem. Just wanted to make sure that I should see the wifi sleep when the phone sleeps, correct?
Now that I'm thinking about it, maybe I should be asking this question. What drains more power, wifi always on or a phone trying to stay connected to a very weak 3g signal?

Reboot didn't solve the problem. Maybe its a reporting issue. I didn't hear any notifications and when I woke the phone it messaged that it connected to my network. Dunno!!
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I know my WiFi takes a few minutes to actually turn off after the system goes to sleep. To me it seems as if there's some timeout where it waits x amount of minutes after the last data access before it turns off? But that being said... it does look like your system is waking up an awful lot even when the screen is off. I might venture a guess that you've got some app that is keeping the system awake and in turn holding open the WiFi connection.
Have you tried Better Battery Stats to see what might be going on?

Have you tried Better Battery Stats to see what might be going on?
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I'll give that a go.

And a weak 3G signal will drain battery A LOT faster than wifi because the phone keeps searching for new towers where it can get a better signal from.

I've only had the phone 5 days, maybe I should just swap it out.

CNexus said:
And a weak 3G signal will drain battery A LOT faster than wifi because the phone keeps searching for new towers where it can get a better signal from.
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Listen to this man, he knows what he's talking about.
I hang out with friends every Thursday night down in Long Beach. The friend's house we go to has horrible 3G reception. I never connected to his Wifi and always lost 40-50% of my battery in the two hours that I was at his place (without even taking my phone out of my pocket). My phone would be hot and I'd be losing power faster than Apollo 13 (too soon?). Once I started connecting to his wifi, I'd see a drain of 5-10% in those same 2-3 hours. No more burning pant pockets, either.
That being said, I don't think it's the wifi that's causing your battery drain. Looking at your battery screen, something is keeping your phone awake most of the time. Also, as suggested previously, Better Battery Stats is a great program that can help you see what's causing Kernel Wakelocks and Partial Wakelocks. Once you find out what's causing this (typically some sort of data sync or gps services), you can make the choice of that app or battery life. It's made a whole lot of difference on my battery life. Note: Better Battery Stats won't fix the problem for you; it's just a tool to help you find the problem so you can fix it yourself. Don't expect it to make julienne fries or cure your sepsis. That's what the Shamwow is for, of course! Ok, it's late and I'm getting goofy. I'll check in to see if anything helped.

Sorry to go OT, but nice picture topherk :thumbup:

topherk said:
Listen to this man, he knows what he's talking about.
I hang out with friends every Thursday night down in Long Beach. The friend's house we go to has horrible 3G reception. I never connected to his Wifi and always lost 40-50% of my battery in the two hours that I was at his place (without even taking my phone out of my pocket). My phone would be hot and I'd be losing power faster than Apollo 13 (too soon?). Once I started connecting to his wifi, I'd see a drain of 5-10% in those same 2-3 hours. No more burning pant pockets, either.
That being said, I don't think it's the wifi that's causing your battery drain. Looking at your battery screen, something is keeping your phone awake most of the time. Also, as suggested previously, Better Battery Stats is a great program that can help you see what's causing Kernel Wakelocks and Partial Wakelocks. Once you find out what's causing this (typically some sort of data sync or gps services), you can make the choice of that app or battery life. It's made a whole lot of difference on my battery life. Note: Better Battery Stats won't fix the problem for you; it's just a tool to help you find the problem so you can fix it yourself. Don't expect it to make julienne fries or cure your sepsis. That's what the Shamwow is for, of course! Ok, it's late and I'm getting goofy. I'll check in to see if anything helped.
Click to expand...
Click to collapse
Oh, I'm not worried about the drain...I was using the phone heavy in the above screen shot. I'm worried the phone is defective if the wifi won't sleep at all when the correct settings are chosen. It should sleep, and if it doesn't, then in my mind the phone is broken. It's a six or 7 day old phone...it should be flawless. Right? But, per all your info, it appears it's only a cosmetic "broken" phone. My wifi will be on when at home 100% of the time because Sprint's signal sucks ass here. Either way, thanks for all the info everyone.

Battery drain???

Is there a drain??
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Sent from my D5503 using XDA Free mobile app

May I ask why you suspect a drain, like how long does it last and also what's wrong with the built-in bat-stat?
My biggest recommendation is to avoid DL'n every single app and keep it to a minimum.
Mine last roughly 2days with a screen time of 3-4h without charging (was away a weekend recently and took my chances and left the charger at home, used the camera alot incl. 4k shooting and alot of music videos playing and made all the way home with 1 percent )
Best phone in terms of battery I've come across yet.

on the stock rom and kernel?

Hello, what's your android version and firmware build number? I would like to use it because i'm on 4.4.4 build 14.4.A.0.108 and I'm experiencing fast battery drain.
[SIC] said:
May I ask why you suspect a drain, like how long does it last and also what's wrong with the built-in bat-stat?
My biggest recommendation is to avoid DL'n every single app and keep it to a minimum.
Mine last roughly 2days with a screen time of 3-4h without charging (was away a weekend recently and took my chances and left the charger at home, used the camera alot incl. 4k shooting and alot of music videos playing and made all the way home with 1 percent )
Best phone in terms of battery I've come across yet.
Click to expand...
Click to collapse

jserrano15 said:
I would like to use it because i'm on 4.4.4 build 14.4.A.0.108 and I'm experiencing fast battery drain.
Click to expand...
Click to collapse
Changing ROM will not help in most cases if you won't discover what is eating battery.
I am on the same above ROM and kernel and I don't complain.
Term 'fast' is not much precise, either.
BTW:
1.3%/h is pretty reasonable if phone was in use from time to time.
Base rule with BBS is to check batery over night, when it is not used at all.
Under those circumstances you should see 0.1-03%/h and that is completely fine.

F308 said:
Changing ROM will not help in most cases if you won't discover what is eating battery.
I am on the same above ROM and kernel and I don't complain.
Term 'fast' is not much precise, either.
BTW:
1.3%/h is pretty reasonable if phone was in use from time to time.
Base rule with BBS is to check batery over night, when it is not used at all.
Under those circumstances you should see 0.1-03%/h and that is completely fine.
Click to expand...
Click to collapse
how about dropping from 60% to 6% fast? that's my battery problem.

eumanoid said:
how about dropping from 60% to 6% fast? that's my battery problem.
Click to expand...
Click to collapse
As always - check that all automatic synchronizations are off.
google, pictures, facebook, whatsapp.
Hope you don't use WiFi all the time, nor you scan for available networks.
BetterBatteryStats is really helpful, read corresponging thread.

F308 said:
As always - check that all automatic synchronizations are off.
google, pictures, facebook, whatsapp.
Hope you don't use WiFi all the time, nor you scan for available networks.
BetterBatteryStats is really helpful, read corresponging thread.
Click to expand...
Click to collapse
i dont think using wifi and auto sync will drain my battery from 60% to 6% in just a second. Anyway, i ordered a replacement battery from witrigs. Hope this fixes my problem. Ive tried factory resets and repair through pc companion. still no improvement. Turning stamina mode improves my battery. It no longer drops 50% in a second, just 10%. Still way too low compared to my excellent battery life with kitkat. Before lollipop, i charge my phone every 2 days with heavy use. Now, i need to charge it twice a day with moderate use.

eumanoid said:
Still way too low compared to my excellent battery life with kitkat. Before lollipop, i charge my phone every 2 days with heavy use.
Click to expand...
Click to collapse
If so - I'd come back to KK before replacing battery, if for no other reason then to prove LP is guilty.
BTW:
Long ago I decided not to upgrade to LP.
Looks like evey step ahead is in real life step back.
Everything is more complicated, wants more maintenance, yet works worse than old simple tools.

jserrano15 said:
Hello, what's your android version and firmware build number? I would like to use it because i'm on 4.4.4 build 14.4.A.0.108 and I'm experiencing fast battery drain.
Click to expand...
Click to collapse
This with additional adblocker :angel:
And removed alot of bloatware and sony apps I don't need.