Something wrong? - Sprint Samsung Galaxy S 4 Q&A, Help & Troubleshoot

I've tried a large amount of ROMs by now and I'm cosistantly having these issues with my battery. I'm noticing a correlation between battery and WiFi seeing that WiFi destroys it every time I use it...is there something wrong with my phone? Battery? Should I stop using agat and ktoonz kernel? I'm confused...I'm not OCd or anything with my kernel either
Sent from my SPH-L720 using xda app-developers app

Rocklee99 said:
I've tried a large amount of ROMs by now and I'm cosistantly having these issues with my battery. I'm noticing a correlation between battery and WiFi seeing that WiFi destroys it every time I use it...is there something wrong with my phone? Battery? Should I stop using agat and ktoonz kernel? I'm confused...I'm not OCd or anything with my kernel either
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
If you have a battery monitor (such as GSam or BetterBatteryStats, etc) take some screenshots and post em' so we can get more info.

Joe0113 said:
If you have a battery monitor (such as GSam or BetterBatteryStats, etc) take some screenshots and post em' so we can get more info.
Click to expand...
Click to collapse
Yes, I noticed that WIFI kills the battery life too. That probably because, it constantly scans to try to find and connect to a hot spot of TWCWIFI. I have to make sure to turn off the WIFI after use.

Hmmmm. There are a number of rooted apps that will kill unnecessary apps from sucking the life oitta your battery.
Use Greenify. Its a pretty cool app that deff helps out.
Obviously make sure Power Saving Mode is on. Make sure to turn off anything youre not using.
ALSO. Something many people don't know...Whenever I get a new phone and or battery. I make sure..and this is important...I charge the battery ALL the way up without messing with it. Then when its good and juiced up. Use the battery normally. But use it ALL the way til your phone dies. Literally. Then...charge it ALL the way back up.
Repeat these steps a good 3-4 times. Batteries have memory in them. If you charge up a new battery to say 75% and take it off and let it drain..then charge it back up. It'll think that 75% is 100%. Thats why its crucial to do those steps a good handful of times.
I guess you can also set your brightness level to auto. Get a cleanup app. Clean Master is a good one. It even boosts memory too by clearing up random files.

I tried greenify but like as we speak, I'm on the charger with WiFi on and the battery is still draining....like is my phone screwed up?
Sent from my SPH-L720 using xda app-developers app

Rocklee99 said:
Should I stop using agat and ktoonz kernel? I'm confused...I'm not OCd or anything with my kernel either
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
Yes, you should. I am always amused that people will take a perfectly good device, modify it completely, and then wonder why they are having issues. ODIN back to stock rooted and don't fix what's not broken. Needless to say, I have no battery drain issues with my device. On my old S3, I used to do what you do, including running kernels by the same devs you mentioned. What I found was that I would spend hours backing up, flashing, restoring, configuring, etc, and I would be left with a device that ran like crap with piss-poor battery life. Nothing custom lasted more than 48 hours on my old S3 and nothing custom has even been flashed to my S4. No need for it.
I do notice that sometimes I get more WiFi battery drain than even on LTE. That has to do with the signal strength of the WiFi vs LTE. A weak wifi signal will drain your battery more than normal, that goes for any device.

Give us some screenshots brotha so we can help diagnose the problem.

Related

Battery issues

My fascinate's battery will not last more than 8 hours off the charger. I am rooted, no special roms. ED04 radio with ED01 base. Any ideas why my battery will not last?
Sent from my SCH-I500 using XDA App
Too many factors determining battery life like leaving your 3g on, gps, etc,.or apps constanly updating through your network, like background sync and stuff. Even low signal drains battery
Sent from my SCH-I500 using XDA App
Use spare parts or something and check what is eating your battery first.
Have you been running the same setup, and the problem randomly popped up? Or is it just after flashing your main setup? Also, a lot of apps/settings will drain your battery. First step is to wipe your battery stats, etc. and then check your apps and settings.
I have changed nothing, but going to the ed04 radio. Ed01 was only getting me 5 hours max on a full battery. I have checked everything else.
Sent from my SCH-I500 using XDA App
Use spare parts from the market and also check battery use in about phone under settings. Best way to fix your problem is knowing whats causing it, recalibrating battery helps a lot too. Oh almost forgot , download cpu spy from market,best way to see if your phone is sleeping properly,it should be in deep sleep almost the whole time when phone is not in use.

Ridiculous battery drain on standby

It seems that the battery drain on my newest N7 (RMA'd first one) is waay worse than on the other, I'll attach some screen shots of what I mean.. it may be just the WiFi is using a lot more than the other's :S I left it 4 hours alone with WiFi and the battery drained 20+ % which even with WiFi on seems excessive does it not? Is it possible I got one with a faulty WiFi radio? I will be testing tomorrow (or maybe tonight) to see battery drain with WiFi turned off to compare, because it also seemed to drain fast when I was just out and about with WiFi off :/ worried I have bad battery, deep sleep isn't working right (it is going into deep sleep or at least thinks it is from looking at cpuspy), or faulty WiFi... or just too early to judge XD has anyone noticed battery improve over time ? I forget if I did was a month ago I got the original
BTW first screen shot was taken pretty much right as I was leaving for work, so you can compare the battery drain there..
Sent from my Nexus 7 using xda app-developers app
I doubt it's a bad wifi radio, its probably an app that is syncing like crazy in the background.
I'm currently watching the MediaServer app use a disproportionate amount of battery (14% and rising). I deleted a number of images which must of kicked in the scanner which must be very inefficient.
I also noticed my N7 become very slow at the same time.
Possibly you downloaded a large amount of images/music/etc before putting your device to sleep...
Sent from my Nexus 7 using Tapatalk 2
Toast95135 said:
I doubt it's a bad wifi radio, its probably an app that is syncing like crazy in the background.
Click to expand...
Click to collapse
I really wish I could figure out why maps keeps starting a process.. can you check to see how many instances of maps there are ? In particular one running Prefetcherservice.. as for the other comment, media server is sitting at 6%, android is at 14%, and screen at 67%.. though I did copy a bunch of songs and pictures over after the RMA, is there a way to fix these or should I delete them to see if it gets better ?
Sent from my Nexus 7 using xda app-developers app
Sigh, I might just have a bad battery, or preferably poorly calibrated, since another hour of use, just browsing and such, and I'm down 20% more -_- hope I don't have to RMA again
Sent from my Nexus 7 using xda app-developers app
As a side question.. how hot does your tablet get under normal use? Mine has been heating up quite a bit in the battery section i think with just average on browser use :/
noneabove said:
As a side question.. how hot does your tablet get under normal use? Mine has been heating up quite a bit in the battery section i think with just average on browser use :/
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Click to collapse
Nothing you've mentioned sounds even the slightest bit out of the ordinary. I know a person who thinks they are always sick is a hypochondriac so is someone who always thinks there is something wrong with their computing device a hypo-com-driac?
findmike said:
Nothing you've mentioned sounds even the slightest bit out of the ordinary. I know a person who thinks they are always sick is a hypochondriac so is someone who always thinks there is something wrong with their computing device a hypo-com-driac?
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Click to collapse
Bahaha good one I dunno, the problem is that this is literally my fourth N7 since the other three allll suffered from major screen lifting, so maybe I am looking for something wrong just so i can make sure it's perfect... Though I do think the battery life is pretty weak, I think I may have figured SOMETHING out, the only difference between this and my original is that my original had a huge section of the map of my area downloaded, and since I did that maps hasn't started any additional processes.. so good sign ? maybe ? haha
noneabove said:
Bahaha good one I dunno, the problem is that this is literally my fourth N7 since the other three allll suffered from major screen lifting, so maybe I am looking for something wrong just so i can make sure it's perfect... Though I do think the battery life is pretty weak, I think I may have figured SOMETHING out, the only difference between this and my original is that my original had a huge section of the map of my area downloaded, and since I did that maps hasn't started any additional processes.. so good sign ? maybe ? haha
Click to expand...
Click to collapse
Yeah this might be a good time to stop looking for trouble and just enjoy the tablet for a while. I drop mine on the charger in the morning and don't ever really think about the battery other than that. Whatever the battery stats say now they won't say in a week and they won't say after you flash to a different ROM. If you have wifi on apps will sync and the tablet will loose it's charge. I'm never far enough away from an outlet to make it much of a concern. So maybe just take a breather, install the Angry Birds and have some fun for a bit. Eventually we'll have ROM's and kernels that make this thing sip electricity but for now I get the few hours a day I need out of it on one charge so I'm set.
findmike said:
Yeah this might be a good time to stop looking for trouble and just enjoy the tablet for a while. I drop mine on the charger in the morning and don't ever really think about the battery other than that. Whatever the battery stats say now they won't say in a week and they won't say after you flash to a different ROM. If you have wifi on apps will sync and the tablet will loose it's charge. I'm never far enough away from an outlet to make it much of a concern. So maybe just take a breather, install the Angry Birds and have some fun for a bit. Eventually we'll have ROM's and kernels that make this thing sip electricity but for now I get the few hours a day I need out of it on one charge so I'm set.
Click to expand...
Click to collapse
You think the battery life will get much better than what it is? My only other android experience is my HTC Desire Z which has a horrible battery as it is so it didn't improve much at all with custom roms
Speaking of improved life through ROMs and kernels, have you noticed any kernel providing particularly better battery life ? I'm on trinity right now, no voltage changing, but underclocked to 1.1 ghz from 1.3
Factory reset, see if the problem continues. That's the only way decide if it's a HW problem.
And my N7 uses effectively 0% battery in standby, it was off the charger yesterday for 6 hours and when I started playing around it was still at 99%. I turn off wifi on screen off, however.
Use http://forum.xda-developers.com/showthread.php?t=1179809 to find out what's waking up your phone, the apk is in the second post. Install, charge it up, unplug, leave for 4 hours idle then look at partial wakelocks and alarms.
I saved quite a bit of standby time by disabling location services and Facebook.
If your not using nfc that could save battery?
Sent from my Nexus 7 using XDA Premium HD app
Salty Wagyu said:
Use http://forum.xda-developers.com/showthread.php?t=1179809 to find out what's waking up your phone, the apk is in the second post. Install, charge it up, unplug, leave for 4 hours idle then look at partial wakelocks and alarms.
I saved quite a bit of standby time by disabling location services and Facebook.
Click to expand...
Click to collapse
^ do that
I used Better Battery Stats to figure out Google Maps was causing wakelocks. I cleared data in the maps app and now my 7 idles without much battery drain at all.
northbridge said:
^ do that
I used Better Battery Stats to figure out Google Maps was causing wakelocks. I cleared data in the maps app and now my 7 idles without much battery drain at all.
Click to expand...
Click to collapse
Haha I actually just read your post in the kernel thread about this and immediately cleared map data, now I'm about to unplug and see what happens!
Sent from my Nexus 7 using xda app-developers app
noneabove said:
Haha I actually just read your post in the kernel thread about this and immediately cleared map data, now I'm about to unplug and see what happens!
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
northbridge said:
:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
Click to expand...
Click to collapse
Well, left it for an hour on standby with wifi on, 0% drain, let's see how rest of day goes !
northbridge said:
:good:
If that doesnt work for you, Better Battery Stats should be able to tell you what app is causing the drain.
Click to expand...
Click to collapse
So it seems like partial wakelock is mostly audioout_2 which i assume comes from me playing a game with music amongst other things?
Alarms says com.google.android.googlequicksearchbox has 50 wakeups, and maps has 38 :S why does maps keep trying to kill me?! and what is the googlequicksearchbox doing waking the tablet up...
Wlan_Rx_wake seems to be the culprit of semi bad battery. Is there a way to prevent the tablet from waking up all the time? Maybe just unsync or turn off WiFi instead?
noneabove said:
So it seems like partial wakelock is mostly audioout_2 which i assume comes from me playing a game with music amongst other things?
Alarms says com.google.android.googlequicksearchbox has 50 wakeups, and maps has 38 :S why does maps keep trying to kill me?! and what is the googlequicksearchbox doing waking the tablet up...
Click to expand...
Click to collapse
When my battery drain was bad I had something like 250+ wakeups from maps under the alarms section in only a few hours off the charger and Maps was showing up as the most common reason for partial wakelocks.
I think AudioOut_2 is normal - Im not sure what it does though. Im now at 8+ hours of standby with 99% battery. Under alarms im showing 138 Maps wakeups and 76 from google quick search box. My drain is all gone now though so i assume this is within normal range. The better battery stats thread and a few other threads on XDA have detailed descriptions of the different battery draining wakelocks and possible remedies. Not all wakelocks are bad though.

Battery drain behavior

Hello,
Just trying to figure out if my battery is normal.
With any ROM OR KERNEL combination here, I tried few, my battery is fantastic while phone is idle, no loss over night or all day if screen is off.
But once I start using the phone it drops like 3-5 % from few minutes regular use, yesterday I took few photos, sphere, panorama and it dropped 25%. I have max1350
Wake locks are OK, no stupid stuff eating at it.
Is this normal for people or?
To open xda and type this I Lost 2%
odeccacccp said:
Hello,
Just trying to figure out if my battery is normal.
With any ROM OR KERNEL combination here, I tried few, my battery is fantastic while phone is idle, no loss over night or all day if screen is off.
But once I start using the phone it drops like 3-5 % from few minutes regular use, yesterday I took few photos, sphere, panorama and it dropped 25%. I have max1350
Wake locks are OK, no stupid stuff eating at it.
Is this normal for people or?
To open xda and type this I Lost 2%
Click to expand...
Click to collapse
Nah, that's not normal.
- Bad signal reception?
- Google Now & maps updating non stop? Other apps, like facebook?
Post a screen shot of your battery usage graph, will make it easier to determine.
Have a look at this thread as well http://forum.xda-developers.com/showthread.php?t=2107163 some people have been helped by flashing back to stock.
Was it always this bad?
The battery reporting is kinda broken. Add you say, it can hold constant when it should really be draining slightly, and then suddenly drop in one big go as it "catches up".
It's a common problem.
Sent from my Nexus 4 using xda premium
Vangelis13 said:
Nah, that's not normal.
- Bad signal reception?
- Google Now & maps updating non stop? Other apps, like facebook?
Post a screen shot of your battery usage graph, will make it easier to determine.
Have a look at this thread as well http://forum.xda-developers.com/showthread.php?t=2107163 some people have been helped by flashing back to stock.
Was it always this bad?
Click to expand...
Click to collapse
-I was thinking of signal, I think it's not so great at home, it jumps from 3g to H to H+, but it's like 4-5 bars. Not sure, is there an app to monitor the signal strength?
-I've been planing around so there are not solid stats yet. But I am running Liquid smooth I don't even have Maps. There no crazy wakelocks or apps running, otherwise even in idle mode I would loose power.
It pretty much been always like this, since I started flashing custom staff. Don;t remember on stock, as there is no batter % icon there, I reverted back to stock right now lets see.
What ROM/Kernel are you using? and have you done what that thread is talking about?
steviewevie said:
The battery reporting is kinda broken. Add you say, it can hold constant when it should really be draining slightly, and then suddenly drop in one big go as it "catches up".
It's a common problem.
Sent from my Nexus 4 using xda premium
Click to expand...
Click to collapse
Yes pretty much, I would not say i drops in one big number, but yes fast so pretty much same.
For example, to post the Thread i went from 35% to 32% after being idle all night, but then One Hour Driving to work with BT on pair with car, text messaging and e-mailing it dropped 1%.
The big question, if it's common problem, meaning not on every phone, so does t hat mean it's hardware and I should be calling Google?
or
is it 4.2.1/Custom ROM/Kernel problem?
is there a thread or anyone I can follow on this issue?
Thanks
odeccacccp said:
-I was thinking of signal, I think it's not so great at home, it jumps from 3g to H to H+, but it's like 4-5 bars. Not sure, is there an app to monitor the signal strength?
-I've been planing around so there are not solid stats yet. But I am running Liquid smooth I don't even have Maps. There no crazy wakelocks or apps running, otherwise even in idle mode I would loose power.
It pretty much been always like this, since I started flashing custom staff. Don;t remember on stock, as there is no batter % icon there, I reverted back to stock right now lets see.
What ROM/Kernel are you using? and have you done what that thread is talking about?
Click to expand...
Click to collapse
I was on that until yesterday. Try it with Trinity or Franco's kernel, see what that does.
Didn't do what the op claims in that thread but then again, I didn't have any issues with the battery..
My phone was behaving the same way. The idle time would be great...no percents dropping for hours. But then when I'd actually use the phone the drop was sharp.
Lately its getting better for me...its dropping a bit on idle but also at a much slower rate when the phone is used.
I hope it'll be fixed in 4.2.2
Also keep in mind that the rendering process in photosphere does that huge amounts of battery.
Sent from my Nexus 4 using xda app-developers app
Vangelis13 said:
I was on that until yesterday. Try it with Trinity or Franco's kernel, see what that does.
Didn't do what the op claims in that thread but then again, I didn't have any issues with the battery..
Click to expand...
Click to collapse
I used Franco and Faux, good builds but it jumps even more.
I will try Harsh at -50UV just came out, see how it goes and then Trinity. I am using Liquidsmooth ROM.
Much appreciated.
beegbear said:
My phone was behaving the same way. The idle time would be great...no percents dropping for hours. But then when I'd actually use the phone the drop was sharp.
Lately its getting better for me...its dropping a bit on idle but also at a much slower rate when the phone is used.
I hope it'll be fixed in 4.2.2
Also keep in mind that the rendering process in photosphere does that huge amounts of battery.
Sent from my Nexus 4 using xda app-developers app
Click to expand...
Click to collapse
Ok so It's not hardware I am thinking.
But did you do anything, like flash something different? which rom/kernel you are on now?
or
did it just settle over few cycles?
Again thanks everyone for valuable answers, much appreciated, I was getting worried.

n00b here, need help with battery issues

Hi there; this is my first post so please go easy on me.
Bought a Nexus 4 which is my first Android device, but the battery life is bugging the hell out of me. Surely the screen should always be at the top, right? I left it to sleep overnight on a full charge to find that it had shot down to 60% when I woke up at 7 this morning.
I haven't rooted or flashed or anything like that, because as I said, I'm an Android virgin. I have location settings off, only Gmail syncing and the usual push notifications here and there. Nothing too fancy or strenuous.
Any help on how I can go around fixing this? I'm a little afraid to rooting/flashing/ROMs etc, because I've no clue what works best.
Cheers!
If your saying you left the screen on over night, meaning the phone never went into deep sleep.. If you slept for let's say 6 hours and the phones screen was on for that whole time it's normal that it went down to sixty percent battery.
Maybe I'm understanding your post wrong? Btw I cannot see the picture you posted.
Sent from my SGH-T999 using xda app-developers app
Turn off mobile data and lower the screen brightness to 0 during the day. Also disable WiFi when you're sleeping. I also make sure all apps are closed using the app manager button on the far right.
Mine's been fine following this logic.
Oh sorry, I should meant sleeping overnight, whilst I slept cosily in my bed.
I'll reattach the image in a second
Ah, you won't be able to see any links till I've gone past 10 posts. Back in a bit then, ha.
atw1927 said:
Ah, you won't be able to see any links till I've gone past 10 posts. Back in a bit then, ha.
Click to expand...
Click to collapse
lol I see it now.. try performing a reset, android shouldn't be that high.. are you rooted? custom rom/kernel?
Crisisx1 said:
lol I see it now.. try performing a reset, android shouldn't be that high.. are you rooted? custom rom/kernel?
Click to expand...
Click to collapse
This is NOT the answer. His battery in the image has dropped 7%. If he hasn't used the screen much it is perfectly understandable that screen might not be a large percentage of that 7%. As he uses the phone more screen will use a larger percentage of his battery and Android OS will use less.
If he gets to the point where the screen is on for an hour or two and the percentages are still like this then yes there is a problem.
Sent from my Nexus 4 using Tapatalk 2
joshnichols189 said:
This is NOT the answer. His battery in the image has dropped 7%. If he hasn't used the screen much it is perfectly understandable that screen might not be a large percentage of that 7%. As he uses the phone more screen will use a larger percentage of his battery and Android OS will use less.
If he gets to the point where the screen is on for an hour or two and the percentages are still like this then yes there is a problem.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
My android system has never been that high, regardless if I used the phone for 10 minutes or 10 seconds , or not at all.
atw1927 said:
Hi there; this is my first post so please go easy on me.
Bought a Nexus 4 which is my first Android device, but the battery life is bugging the hell out of me. Surely the screen should always be at the top, right? I left it to sleep overnight on a full charge to find that it had shot down to 60% when I woke up at 7 this morning.
I haven't rooted or flashed or anything like that, because as I said, I'm an Android virgin. I have location settings off, only Gmail syncing and the usual push notifications here and there. Nothing too fancy or strenuous.
Any help on how I can go around fixing this? I'm a little afraid to rooting/flashing/ROMs etc, because I've no clue what works best.
Cheers!
Click to expand...
Click to collapse
Actually No the "Screen" should not always be at the top of the stat list. If you use the phone more than it idles, then yes... but if you are like me, mine says "Phone Idle: 20%" (which is on top) and "Screen" is 4th on the list with 12% (Wi-Fi and Cell standby above it) [this is my personal phone, and I mostly use my work phone. hence the high Idle & standby]
I was having an issue with my phone running out of battery, with very little usage from it. I mean very little, I might make 2 calls from it each day, and respond to an email now and then. I found that an App was preventing my Screen from going into "Deep Sleep" or even "Sleeping" possibly. So I uninstalled all apps (well I only had like 4 additional apps installed), except for 2 that I need (Google Voice & Drive). Powered off the phone, charged it fully, then powered back on. Its been running on the same charge for 24+hrs now and reads 68% battery remaining.
So check the apps you have installed, some use background data, and might be causing problems...
Crisisx1 said:
My android system has never been that high, regardless if I used the phone for 10 minutes or 10 seconds , or not at all.
Click to expand...
Click to collapse
And your phone is the definitive guide for what Android OS usage is? Maybe his phone woke up those services for a period of time longer than normal.
The answer of "lol looks wrong root and install kernel" is terrible advice when so little information is given.
Sent from my Nexus 4 using Tapatalk 2
What else would you like to know?
atw1927 said:
What else would you like to know?
Click to expand...
Click to collapse
A longer battery graph would help a lot. If yuppy want top search XDA there is a free app called better battery stats that will help you diagnose if something is running in the background eating battery or even if your phone I'd properly entering deep sleep.
Sent from my Nexus 4 using Tapatalk 2
Better Battery stats and battery screenshots here
atw1927 said:
Better Battery stats and battery screenshots here
Click to expand...
Click to collapse
See now it is much easier to see that you actually do have a problem and what it is. You have the wakelock problem as you can see from Better Battery Stats which falls under Android OS on the other screen. It also appears that you have somewhat weak signal which could cause the wakelock to drain battery even more. There's not much you can do about that wake lock, some kernels have patches for it but those have their own issues as well.
Sent from my Nexus 4 using Tapatalk 2
Could I just install any kernel on stock android and be OK with it? As I've said I've no idea what's best for me; just something nice and clean that doesn't have issues like this. I live onsite where I work so my WiFi is pretty much on all the time if that helps in anyway whatsoever
I'm gonna let it run down completely tonight and charge it, but I don't expect it to help much.
joshnichols189 said:
And your phone is the definitive guide for what Android OS usage is? Maybe his phone woke up those services for a period of time longer than normal.
The answer of "lol looks wrong root and install kernel" is terrible advice when so little information is given.
Sent from my Nexus 4 using Tapatalk 2
Click to expand...
Click to collapse
I never told him to install a kernel. The advice I gave is to do a reset then I asked if he was rooted or running a custom rom or kernel because that might of been the problem.
Sent from my SGH-T999 using xda app-developers app
Bump
Fully charged overnight, battery still sinking like a ship. 45 minutes and I'm already down to 94% already!
Idiot question; will installing a kernel just solve this? For now as a new guy I'd like to keep it as stock as possible before fiddling with it.
atw1927 said:
Fully charged overnight, battery still sinking like a ship. 45 minutes and I'm already down to 94% already!
Idiot question; will installing a kernel just solve this? For now as a new guy I'd like to keep it as stock as possible before fiddling with it.
Click to expand...
Click to collapse
The battery on the n4 seems horrible.
I'm completely stock I just got my phone yesterday, I charged it to 100% now its at 64% battery with only 47 minutes of screen on time.
on the s3 I would be around 83% with 47 minutes of screen on time.
I'm gonna unlock the boot loader and root soon and try Franco kernel I've been reading good things about it.
Sent from my Nexus 4 using xda app-developers app
The battery life on the stock kernel isn't great because the CPU management isn't optimized well. It ramps up the CPU (frequency, number of active cores...) very easily and keeps it there long, which removes the occasional lag but sucks more battery. Flashing a more battery friendly kernel would definitely help you if that is the root of your battery issues and not a badly coded app.
Franco's kernel is a very popular one, and very battery friendly compared to stock (and that doesn't mean you lose performance). It is the one I'm currently using. Most people report of screen on times of 4 or 5 hours. With not so heavy usage and wifi (not 3g) I can also pass 5 hrs.
To install a kernel you need to unlock your boot loader and install a custom recovery. No need to root, but.. why not since you're at it
You can try different kernels with the stock ROM. You don't necessarily need a custom ROM. Just be careful to read the dev's OP and instructions, and definitely not to flash a kernel for another device.
Also another thing that reduces battery is your mobile data, if there are a lot of programs that sync on the background. You can use a program that turns off your mobile data when your screen is off and switch it back on just for a sync every xx minutes. Juice Defender is such app, though I like to use Tasker for that. If you use Tasker and are interested in that project, ask or send me a pm. It works great.

[Q] Help With Battery Drain

In the past week or so, I've noticed that my battery is draining unusually fast. I will take the phone to bed with me (I use it as an alarm clock) at 100% battery and I can wake up 7 hours later with it at 82%. When I look at my battery information, I see steady, solid drain over that time, with the biggest offender being Google Services. When I look in Wakelock Detector, I see the most usage (though seemingly not a ton) by Android System.
I found some tips on using Wakelock Terminator in Xposed to filter some things from Google Play Services from triggering wakelock, and I was optimistic, but it didn't seem to help.
Any advice?
Greenify
flu13 said:
In the past week or so, I've noticed that my battery is draining unusually fast. I will take the phone to bed with me (I use it as an alarm clock) at 100% battery and I can wake up 7 hours later with it at 82%. When I look at my battery information, I see steady, solid drain over that time, with the biggest offender being Google Services. When I look in Wakelock Detector, I see the most usage (though seemingly not a ton) by Android System.
I found some tips on using Wakelock Terminator in Xposed to filter some things from Google Play Services from triggering wakelock, and I was optimistic, but it didn't seem to help.
Any advice?
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Are you on a stock rom? Did you try greenify? It's on the play store. It kills the apps background services and the app itself until you start the app or the app is started by another app or service. Soon as the app os no longer needed it is turn back off. This program does not freeze apps it prevents them from running until needed.
Ah, sorry, I should have mentioned my rom and such. I'm running ForceROM, a relatively older version (maybe 2.3?), since I never felt the need to update.
I haven't tried Greenify. Haven't actually heard of that one before. I'll give it a shot. Thanks for the tip.
flu13 said:
Ah, sorry, I should have mentioned my rom and such. I'm running ForceROM, a relatively older version (maybe 2.3?), since I never felt the need to update.
I haven't tried Greenify. Haven't actually heard of that one before. I'll give it a shot. Thanks for the tip.
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Click to collapse
Try a custom kernel like KToonsez in addition to Greenify. It's amazing what you can end up doing with that kernel
Sent from my SCH-I545 using Tapatalk
ForceROM includes Ktoonsez kernel. For the last 8 months or so, I've had great battery life. This is a sudden and recent change, which I'm assuming to be caused by an update of some Google app (such as Play Services).
How do I use Greenify? Or do I just install it and it does magic?
flu13 said:
In the past week or so, I've noticed that my battery is draining unusually fast. I will take the phone to bed with me (I use it as an alarm clock) at 100% battery and I can wake up 7 hours later with it at 82%. When I look at my battery information, I see steady, solid drain over that time, with the biggest offender being Google Services. When I look in Wakelock Detector, I see the most usage (though seemingly not a ton) by Android System.
I found some tips on using Wakelock Terminator in Xposed to filter some things from Google Play Services from triggering wakelock, and I was optimistic, but it didn't seem to help.
Any advice?
Click to expand...
Click to collapse
Do you have auto-sync enabled? What Google Services do you have enabled for sync? I used to have a similar issue but turning off sync for things I don't use (like newsstand, etc) helped my battery life a lot.
---------- Post added at 10:36 PM ---------- Previous post was at 10:34 PM ----------
flu13 said:
ForceROM includes Ktoonsez kernel. For the last 8 months or so, I've had great battery life. This is a sudden and recent change, which I'm assuming to be caused by an update of some Google app (such as Play Services).
How do I use Greenify? Or do I just install it and it does magic?
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2552570
That thread may help you with this.
my last resort advice would be to flash a 4.3 rom......your not missing out on much not running KK.....
Sent from my SPH-L720 using xda app-developers app
I highly recommend trying out NEGALITE WonderRom r14.
Sent from my SPH-L720 using XDA Premium 4 mobile app
pacoz said:
I highly recommend trying out NEGALITE WonderRom r14.
agreed..!
Sent from my SPH-L720 using XDA Premium 4 mobile app
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Click to collapse
Sent from my SPH-L720 using xda app-developers app
I believe that installing Greenify might have done it. Battery usage looks much better today. I'll do a real test tonight when I get it charged to 100% before bed.
Well, I'll be...
I think that the problem is wifi. When I'm at home, I'm on wifi, and the battery is constantly draining. When I'm not at home, and on mobile data, the battery is well-behaved.
What's up with that?
Are you using Google's keyboard?
flu13 said:
Well, I'll be...
I think that the problem is WiFi. When I'm at home, I'm on WiFi, and the battery is constantly draining. When I'm not at home, and on mobile data, the battery is well-behaved.
What's up with that?
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Click to collapse
Some apps can be setup to sync over WiFi only instead of 3G/4G data. but you have to check what apps would be the culprit. I know Google play, dropbox's picture upload feature can be set to download/upload/update over WiFi instead of data. But the only way to know is to see what apps connect over WiFi.
WiFi is suppose to give you better battery life since its signal is usually nearby and your phone doesn't have to use more power to find a better signal like it does with 3g/4g. I know for me it does since there are very few towers in the middle of the dessert.
Beezer80 said:
Are you using Google's keyboard?
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Click to collapse
No, I use Swiftkey.
So, interesting twist to this saga. Leaving wifi off takes away the solid blue bar on the battery screen, but I still see the same level of battery drain (about 18% overnight). Very intriguing.
Agreed
flu13 said:
I believe that installing Greenify might have done it. Battery usage looks much better today. I'll do a real test tonight when I get it charged to 100% before bed.
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Click to collapse
Agreed helps a lot when charging phone. May get a lil glitchy if you run it on every app.
flu13 said:
Well, I'll be...
I think that the problem is wifi. When I'm at home, I'm on wifi, and the battery is constantly draining. When I'm not at home, and on mobile data, the battery is well-behaved.
What's up with that?
Click to expand...
Click to collapse
Sounds like you're losing power to things syncing over wifi. Maybe try just giving it a week and watching it to see if it settles down. Google play sometimes settles down on its own. I also vote to check out greenify. With the donation package you can work wonders at calming down power hungry apps, even system apps.
Sent via mobile
My situation has suddenly taken a turn for the much worse. I don't know what's going on. I haven't added anything new or changed any settings since installing Greenify a while back. Now, the battery is just tanking. I got up to 100%, ran Battery Calibration and now, about 2.5 hours later, I'm at 82%. Could this just be a problem with the battery itself? Do I need to replace it?
Are you on MJA?
Sent from my Sprint S4 using XDA premium.
flu13 said:
My situation has suddenly taken a turn for the much worse. I don't know what's going on. I haven't added anything new or changed any settings since installing Greenify a while back. Now, the battery is just tanking. I got up to 100%, ran Battery Calibration and now, about 2.5 hours later, I'm at 82%. Could this just be a problem with the battery itself? Do I need to replace it?
Click to expand...
Click to collapse
Honestly there are a few days where the battery life suddenly drops dramatically. I've experienced this on unrooted mf9, mk2, and nae. Give it some time and see if battery life comes back up. You can reboot the phone to kill a rouge app that might be the cause.
Sent from my SPH-L720 using Tapatalk
This is the first I've heard the term MJA, so I don't think I'm on that.
There definitely do seem to be days where battery is worse than others. And I do typically try to reboot when I see it acting too squirrelly. I'll just keep keeping an eye on it. Weird-ass phone...

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