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.
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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
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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...
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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

Is it good?

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I got this much today and I feel happy with it. I got up at 6, had school and text in crappy service for whiles at a time. I did charge It once but for like ten minutes. Stock everything, do I get good battery?
Sent from my Galaxy Nexus using Tapatalk 2

It is possible to get better battery performance than that, but as long as it's suitable for what you need it for, then that's the important thing.
If you're interested, there's always lots of information in threads about custom ROMs and custom kernels regarding the amount of battery people manage to wring out of their phones.

Could be improved. Have you checked your phone for wakelocks to see if there is any apps or services eating up unnecessary battery? Try flashing a kernel/ROM as well. Highly recommend Franco's kernel.
These are screens captured this evening. Using Franco's r121 kernel and stock ICS IMM76I on stock 1750mAH battery.

Thank you! Will try it. Can I just flash in recovery on completely stock rom? I want to make sure it's compatible
Sent from my Galaxy Nexus using Tapatalk 2

Look my...everything stock
But everything depends from ur use
Inviato dal mio Galaxy Nexus con Tapatalk 2

1hr 42 minz of screen on time isnt so hot. a 3hr average is considered decent

i wish i could get past 6hrs of battery life with playing music.. im thinking about buying a extended battery
and yes im using Franco m3, AOKP 34

The Nexus Project said:
1hr 42 minz of screen on time isnt so hot. a 3hr average is considered decent
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Click to collapse
Seriously. His signal was pretty ****ty over the course of the battery though.

martonikaj said:
Seriously. His signal was pretty ****ty over the course of the battery though.
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Click to collapse
on
Yeah everyone is comparing apples and oranges, Wifi and Wireless, LTE and GSM, etc..
Yes you will get almost 2 days of battery life if you are on a strong WiFi signal the majority of the time. If you understand wireless technology it all makes sense. Regardless of the signal wifi or network connection when the signal is weak the phone is using more power to keep the connection alive. In turns of power usage Wifi uses less power than 3G which uses less power than 4G. For LTE devices here usually how your battery life ranks 1 being the best.
1. WiFi signal 4-5 Bars
2. WiFi signal - 2 - 3 Bars
3. 3G Signal - 4-5 Bars
4. 4G Signal - 4-5 Bars
5. 3G Signal - 2-3 Bars
6. 4G Signal - 2-3 Bars

HeCareth said:
In turns of power usage Wifi uses less power than 3G which uses less power than 4G.
Click to expand...
Click to collapse
I don't know yet about the Nexus specifically, but in most cases it's much easier on the battery to idle on UMTS than WiFi. However, since most of us have our phones in constant contact with the Googleplex, there's a fair amount of data transfer when the phone is otherwise idle. That muddies the waters quite a bit.
It also depends to a large degree on whether your AP can allow WiFi clients to sleep like they do on the cellular networks or not. I'm not positive about cdma2000, but in GSM and UMTS the phone spends most of its idle time with the radio off. It only has to wake up every 5-10 seconds to listen for pages from the network.
Some WiFi APs have working 802.11e WMM, but others are broken. Presumably anything modern is more likely to have working power save, but it's always been hit-or-miss for me despite the standard being some 7 years old now.
If there's a point to take from this, I guess it's that whether wifi or 3G drains your battery less isn't something you can make a blanket statement about, as with almost everything related to battery life.

HeCareth said:
In turns of power usage Wifi uses less power than 3G
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Click to collapse
I don't believe that..

case0 said:
I don't believe that..
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You don't have to take my word for it..http://smallbusiness.chron.com/uses-battery-3g-wifi-27139.html

case0 said:
I don't believe that..
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Click to collapse
Overall, WiFi uses less power than 3G/4G. WiFi uses more "idle" power keeping connected, but much much less "transmitting" power. It transmits for shorter periods of time (short active connection) and over a shorter distance (no power to boost signal), both reducing usage.
Even if it was break-even power wise, you'd rather be on WiFi to save data usage.

[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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Click to collapse
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.
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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.

First day with M8, feel battery is draining fast

i feel like my battery is draining fast, i havnt done much today on the phone only a little over an hour of screen on time, and not sure if its normal but was at the movies and my phone was pretty warm in my pocket doing nothing
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First day? You might try a couple of charges before hiding it. It's not terrible. About 4 hours of screen on in 21 hours is not that bad for first charge.

I notice from the screenshot that your 4G reception is pretty poor (only 1 bar). The radio is by far, the biggest drainer of battery life. So that being considered, your battery life isn't bad.

jlevy73 said:
I notice from the screenshot that your 4G reception is pretty poor (only 1 bar). The radio is by far, the biggest drainer of battery life. So that being considered, your battery life isn't bad.
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but should that matter when im on wifi? and my s5 didnt have that problem with pretty much the same reception

iamloco724 said:
but should that matter when im on wifi? and my s5 didnt have that problem with pretty much the same reception
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It's going to be more efficient on Wifi. Low signal won't do much, but when it has to constantly search it drains fast.
Here's mine, had it since April 1st and the battery has been consistent.

Doesn't my held awake time seem high? It's higher then my screen on time all I did on the phone today was text, go on Facebook on and off and browse the Web a bit

iamloco724 said:
i feel like my battery is draining fast, i havnt done much today on the phone only a little over an hour of screen on time, and not sure if its normal but was at the movies and my phone was pretty warm in my pocket doing nothing
I have the same problem with my New M8 which I just bought 2 weeks ago.
My situation is the fully charged battery will drain out 20% of power after 6hours sleep. I am pretty sure I turned off all apps before going to bed.
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[email protected] said:
iamloco724 said:
i feel like my battery is draining fast, i havnt done much today on the phone only a little over an hour of screen on time, and not sure if its normal but was at the movies and my phone was pretty warm in my pocket doing nothing
I have the same problem with my New M8 which I just bought 2 weeks ago.
My situation is the fully charged battery will drain out 20% of power after 6hours sleep. I am pretty sure I turned off all apps before going to bed.
Click to expand...
Click to collapse
Battery savings can be had by making sure the display brightness is set to auto. Tbh your battery drain looks normal. There's loads of stuff going on the background when WiFi is on. You can cut some of it down by turning WiFi off when you don't need it and going to your account settings and unchecking some of the sync items you don't need.
I find the battery life suprisingly good considering how long I have the screen on sometimes. I've had full days out of it with constant use . Normal use I'll get 2 days easy.
Also I find this the best battery monitor app. The easy to read timeline graph shows exactly when and where the drain is. https://play.google.com/store/apps/...edium=organic&utm_term=battery+monitor+widget
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Click to collapse

ashyx said:
[email protected] said:
Battery savings can be had by making sure the display brightness is set to auto. Tbh your battery drain looks normal. There's loads of stuff going on the background when WiFi is on. You can cut some of it down by turning WiFi off when you don't need it and going to your account settings and unchecking some of the sync items you don't need.
I find the battery life suprisingly good considering how long I have the screen on sometimes. I've had full days out of it with constant use . Normal use I'll get 2 days easy.
Click to expand...
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I keep brightness almost all the way down due to sensitive eyes, and I have nothing syncing
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iamloco724 said:
ashyx said:
I keep brightness almost all the way down due to sensitive eyes, and I have nothing syncing
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Click to collapse
So you unchecked all the sync options for your Google account?
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ashyx said:
iamloco724 said:
So you unchecked all the sync options for your Google account?
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Yup
Click to expand...
Click to collapse

Convert to GPE and install a custom kernel and you will get much better battery.
Sent from my HTC One_M8 using Tapatalk 2

I only get 3 hours tops of screen on time. Seems too little, from what I've been reading. I have wifi, mobile data and GPS always on and mostly use 4g since I don't have wifi at work. Is this normal?
Some GSam battery monitor screenshots :
http://forum.xda-developers.co...
http://forum.xda-developers.co...
Cheers

4.4.2 to 4.4.4 battery consumption

I have an unrooted M919 which is running 4.4.2 (FNB4). Problem I have is when LTE is on, and I have about 2 bars signal in my room, the battery drains quicker than when the phone is only on H+ /WCDMA.
My question, will the 4.4.4 firmware improve my battery comsumption?
Thanks

In general LTE is known to consume a lot of battery I recommend u stick to H+/WCDMA it what I do .
I doubt the new firmware will have any battery improvement
LTE alone is a battery drainer

LTE is not that bad a drainer, its low reception that will consume a lot of power. The update may not help much, but doesn't hurt to try

I have already packed my M919. I will return it... it makes no sense keeping it it I still have to disable LTE... I will just keep my stellar i9505
The reason I bought the M919 is to have LTE, but I never expected it to suck my battery that fast. I went out with the family to do some shopping this afternoon, from 4pm with 75% battery ( I have rebooted the phone, and greenified everything I can), then after dinner at 8pm, I had 35% left on the battery.

Unless you were actively using it the whole time there is no way it should drain that fast. Did you check battery stats? I wouldn't give up that fast but it's up to you

xdm9mm said:
I have already packed my M919. I will return it... it makes no sense keeping it it I still have to disable LTE... I will just keep my stellar i9505
The reason I bought the M919 is to have LTE, but I never expected it to suck my battery that fast. I went out with the family to do some shopping this afternoon, from 4pm with 75% battery ( I have rebooted the phone, and greenified everything I can), then after dinner at 8pm, I had 35% left on the battery.
Click to expand...
Click to collapse
That kind of drain is not caused by LTE.

+1. Even in marginal signal areas where it is spending lots of energy hunting for signal, it should not drain that fast.
Definitely investigate what is causing power drain. At that rate, it's not LTE or "hunting for LTE" that is causing it.

LOL.. I hate you guys... I will have to unpack the phone and start again then....
But seriously, I have used all Samsung phones... look at my signature LOL... I have never had this kind of battery drain... but I will give it another try, but I am not optimistic because I have reflashed the firmware twice, and have reset the device about 4x already with the same issue...
======
Edit:
I also always disbale things like google+, and other samsung bloatwarez... so nothing really sinisterly running in the background

Better battery stats will solve the issue..

serio22 said:
Better battery stats will solve the issue..
Click to expand...
Click to collapse
Yes I use that, and I don't see anything running wild... I am flashing NH7 now....

What about the stock battery stats? And also do you have Google now disabled?

These are what I habitually disable:
(I am surprized, "SNS" which is related to facebook and twitter is not on the NH7)
I don't have facebook, twitter and other social media apps installed....
The 4G signal you see in my screenshots is because I only used WCDMA connection at that time.
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Just an update, I went out this morning for about 2 hrs. Only time I used the phone was when I received a call which lasted about a minute, used the calculator once for less than 30 seconds, and the only times the screen was on was whenever I checked is if I have LTE signal...
I notice, the "Wifi" is "On" but I am sure I have turned it off. "Wifi calling" is also disabled in case you ask...

Go into WiFi, settings, advanced, and disable always scanning. I forgot about this one, it is a battery drainer for sure. You should get much better battery now

serio22 said:
Go into WiFi, settings, advanced, and disable always scanning. I forgot about this one, it is a battery drainer for sure. You should get much better battery now
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I have to admit, I missed that bit.. LOL... ok let's see what happens in the next few hours....

Good diagnostics ongoing! :good:
One other thought: perhaps the battery itself is not up to spec, and so "30%" of your battery isn't the same number of milliAmperes-hours it should be.
Marc

Frankenscript said:
Good diagnostics ongoing! :good:
One other thought: perhaps the battery itself is not up to spec, and so "30%" of your battery isn't the same number of milliAmperes-hours it should be.
Marc
Click to expand...
Click to collapse
Thanks...but I don't think so because I am using 3 different kinds of batteries. One from my i9505 and one spare, and the one from the M919... all the same results.