[Q] Kernels - Nexus S Q&A, Help & Troubleshooting

I'm almost brand new to flashing kernels and other things to my Android device so I have a question.
I'm on I9020T's official ota version of ICS on my I9020A with the AT&T radio flashed. The battery life has been very poor and I have stumbled across the Glados 2.1 kernel.
Now, my question is, after I flash this, are there any apps that need to be installed or will I start to see battery improvement immediately?
Thanks.

Battery life does not rest on the kernel. Although many kernels boast improved battery life, performance and features (which is almost entirely true), my money says you have different problems going on. No apps need to be installed, but NSTools will give you access to just about all of the extra features.
Describe how your battery life is at the moment so we can help you more, since i assume this is the main issue here.

I charged my phone to full (around 96% or so is the max I think) and looking at the battery stats, it has been on battery for 1h 31m and is now at 86%. And this was with almost zero use. I made one Google Wallet purchase and that's really it.

battery has always been a problem to nexus..switch your 3g to 2g when not in use should help the battery...

Could you also describe what kind of settings you have (email syncing, autosync, talk, wifi, data, etc). Email, for example, uses data and holds a wakelock every so many minutes. With a slow network this could cause the phone to be awake for enough time to noticeably drain the battery. GMail, on the other hand, uses Push Notifications and doesn't use any battery at all - google will contact you when you receive an Email and only then notify you.
It's not extreme drain so it is probably some kind of syncing, or maybe a wifi wakelock or something. Steady, faster-than-normal drain while phone should be sleeping. Better Battery Stats (can be found on XDA) may shed some light if something is keeping the phone awake for noticeable time periods.

Harbb said:
Could you also describe what kind of settings you have (email syncing, autosync, talk, wifi, data, etc). Email, for example, uses data and holds a wakelock every so many minutes. With a slow network this could cause the phone to be awake for enough time to noticeably drain the battery. GMail, on the other hand, uses Push Notifications and doesn't use any battery at all - google will contact you when you receive an Email and only then notify you.
It's not extreme drain so it is probably some kind of syncing, or maybe a wifi wakelock or something. Steady, faster-than-normal drain while phone should be sleeping. Better Battery Stats (can be found on XDA) may shed some light if something is keeping the phone awake for noticeable time periods.
Click to expand...
Click to collapse
I don't use Gmail since I have two email accounts that I want to access. I have the Email app refreshing every hour. I don't sync anything else, I have all Google sync turned off except Calendar.

Related

7 hrs of Standby = 33% of Battery?!?!

Okay so I noticed my Captivate seems to lose a lot of battery while in standby. To test this, I left it unplugged when I went to bed last night. I checked the battery level right when I went to sleep and then again when I woke up...
My battery drained from 64% to 31% in about 7 hours!!!
I know other threads discuss bad battery life. A bright screen and a 1GHZ processor can cause this so I can understand why the phone won't allow me to browse the web for 10 hours straight. But is everyone else getting an almost 5%/hour drain in battery while in standby?
Here is a little info about my setup:
-I took off an animated background and put one that is relatively dark (Screen is off during standby so I would think this doesn't matter)
-I have WiFi and Bluetooth enabled.
-I use both wireless networks and GPS for location.
-I have 1 Gmail account setup to check every hour.
-I have the Daily Briefing set up to check every 3 hours.
-I have the Slickdeals widget set to check every 2 hours.
-I have the Latitude widget running (you can't set how often it refreshes).
-I have the ESPN ScoreCenter widget running.
That's about all I did that I can think of that can possibly affect battery. I know I would get better battery with less background widgets, but all of this is in line with the amount of background services I had running on my last phone (Tilt 2) and that thing would last for several days with light use.
So, what I'm trying to find out is whether or not this is normal behavior that everyone is seeing or perhaps if one of the background widgets I'm using is known for draining a crazy amount of battery. Maybe I need to hard reset the phone? Thanks in advance for any ideas on how to lock this down.
In poor reception I could see that. But I'm good area that's too much. Like 2% every hour is good... 5 is too much....
Thanks for your reply. I had 3 bars of service where I was last night. Also, this isn't the first time I've noticed about 5%/hour for standby, just one example...
So it sounds like I'm getting worse drain than normal? Now, how to fix it?
Well...with all the email checks and having various Widgets check for updates..it will definitely drain the battery. I have been able to easily get twelve+ hours on standby without GPS on and turning off wifi when not at home or in a place with wifi.
Definitely can't go days without charging like I could with previous phones like my blackjack II buy I can get 12-16 hours with light to moderate use and 10-12 with somewhat moderate use of Facebook, wifi, various other apps.
EDIT: the Bluetooth as well will drain the battery.
Sent from my SAMSUNG-SGH-I897 using XDA App
I have very similar battery usage to use. About 5% an hour not doing anything. I am always around a wifi and leave it turned on. I have nearly an out of the box setup. Between the poor battery life and crappy GPS, I may very well be taking this thing back.
Under Settings > Wireless and Network > Wi-Fi settings > Bring up the Advanced menu and set the Wi-Fi sleep policy to "Never".
This has helped my battery life immensely, since I am around Wi-Fi most of the time. This way all your data happens over Wi-Fi instead of 3G when the screen sleeps. I disable Wi-Fi when I'm not around any APs I normally connect to.
Pulled phone off the charger at 6:00AM yesterday morning. Streamed an hour and half to 2+ hours worth of Pandora over wi-fi getting ready for work and then some in the car. Did some web surfing during the day, various other things. (No phone calls really, except a brief wrong number). 4 e-mail accounts checking every 30 minutes (one an Exchange server). Also have Touchdown running push e-mail for another Exchange mailbox along with the Touchdown widget. Played around with some GPS apps (new google maps, Places, etc for a few minutes). Battery was down to about 16% by about midnight last night.
My phone charged fully overnight (with power off). Was turned on at 7AM, it is now 11am, and am at 90%.
I do not use GPS, have nothing running, no emails or social networking status updates.. The phone is on standby on my desk. I only do a few text messages and 5 minutes of voice calls / day.
So this means I get 40hrs of standby time? That is a little ridiculous.
I chatted with AT&T tech support and they said that the AT&T stores don't have battery replacements yet, but I could get a full phone replacement since I am within the 30 days still.
But from what I am hearing, it seems most people are having the same issue if not worse, correct?
I really don't want to set everything back up AGAIN. I am coming from using a Samsung Eternity - understand it isn't a true "smartphone" - but I use it the same, and would easily go 3-4 days without needing a charge.
with GPS off, wifi off, BT off, no data sync or background data turned on, i charge it fully at night -
last 3 nights in a row, at midnight it was showing 100% and at 7:30AM it would show 97-98% remaining, and that was using the alarm, set to loud and probably ran 2 minutes before i'd hit the off button
From 7:30am-11am, I have used 4% of my battery. I have these things going on:
-Exchange sync (real time)
-Facebook sync (once every hour)
-wireless off, bluetooth off, GPS not being utilized
-Weather.com and a Google search widget
The battery use shows this:
-Cell standby: 48%
-Phone idle: 36%
-Display: 8%
-Android System: 3%
-Email: 3%
-Android OS: 2%
I've barely used my phone this morning, so I'd think 4% of use in 3.5 hours is quite acceptable. It sounds like you need to make some modifications to improve your performance.
firehazard - what modifications have you done? I have wifi/bt off, background data off, no email syncing - display brightness all the way down..
To anyone who is having very poor battery life, I suggest a factory data reset when you exhaust other options. My phone wasn't lasting me more than about 8 hours on a full charge, with light to moderate usage. After a factory reset, I just ran nearly 24 hours with similar usage.
I can't tell you what changed or what got removed, maybe it was an app that was running and draining the battery that I didn't see, but battery life is MUCH better now. Hell, everything is running much better, even the GPS.
I went from wanting to throw this phone at a wall and return it for my iPhone 4 again, to loving it in less than 24 hours.
born_fisherman said:
firehazard - what modifications have you done? I have wifi/bt off, background data off, no email syncing - display brightness all the way down..
Click to expand...
Click to collapse
I'm referring to him running wifi and bluetooth when he's not even using his phone. Stuff like that.
Just for recording keeping, when a phone company says their phone can last XXXHours in Standby this means, that all wireless transmitters are off. this means (for the most part) airplane mode, with bluetooth, and wifi OFF.
these continuous wireless transmitters are why you didnt get the 200Hours or what ever it is in standby mode.
I recently took my phone back to BestBuy for a replacement since my battery was trying to kill itself overnight as well. I did the full charge when I first got it and purposely ran the battery down to quickly get it to turn itself off at 0%. Did a full recharge and repeated this process about 3 times and last night my battery only went down 3% over 6 hours. Compared to the 30-40% that was draining before, I'd say the full discharge/full recharge works that people have been talking about in the battery threads works. Thanks, everyone! I use Y5 to have it automatically connect to my WiFi at home when it's in range. Not much more than the usual was left to sync (although JuiceDefender may be working to turn stuff off when my screen is off) such as Gmail, Beautiful widgets, facebook, and one rss feed.
Either that or I had a crappy battery before
Seems like some folks are having the same problem as me, while others are having much better results. Firehazard's situation and drain while not in use is pretty much in line with my expectations of the phone. With my old Tilt 2, I left WiFi and Bluetooth on all the time and still got great standby time out of the phone. When those connections weren't in use, they weren't really draining my battery in any way. I'm going to try to disable them though and see if that helps. I'll also try to monitor the battery usage screen and see how much power is going to wifi and bluetooth when I have them on.
I've been suspicious of my battery as well, tracking it casually today.
Took it off the charger approx 8:30am, immediately went to 99%.
Watching it over the last hour it appears to be losing 1% / 10 minutes.
Running services:
SnsService
GTalkService
DMService (Device management)
Swype
TransactionService (Messaging)
org.npr.android.news (NPR)
Battery Widget
Dictionary.com (word of the day widget)
JuiceDefender
Android Core Apps
Google Voice
Cached Applications:
AppBrain
AT&T Nav
Calendar
com.sec.android.providers.downloads
Daily Briefing
LogsProvider
My Uploads
Phone
Samsung account
Wapedia
Just using it for the past 5 minutes to write up everything running has dropped the battery almost 3%. Albeit I have terrible cell coverage where I am. It does seem that the cell and wifi receivers are a bit weak, or the meters are biased conservatively.
*edit* I want to be clear that I love this phone, I just want to try and find out what and if certain services/applications drain the battery and if not then if I have a bad battery.
Okay, so I turned OFF bluetooth and WiFi and checked the battery before bed and right when I woke up. This time, I lost 24% over 8 hours. Certainly a big improvement over 33% in 7 hours, but also no where near where my old Tilt 2 was. I would lose 2-3% overnight at the most with that phone. I checked the battery meter and the majority of the battery went to Cell Standby and Phone Idle. Those don't seem like things that can be avoided through tweaking. I was in an area with 3 bars of service (same as night before), so I don't think that was an issue.
I'm debating whether or not I should try a factory data reset. Some folks reported good results with that. I really don't feel like reconfiguring my whole device if there isn't a good chance for improvement. Maybe the GPS fix that's coming will help battery life?
Have you tried reconditioning the battery? That would be the charging/discharching cycles mentioned throughout the forum?
I have done it and my phone has been on standby for more than 24 hours and I am still at 50% battery. It's just had very light usage. Wifi on for about an hour, snapping a few pics, deleting some others. A bit of calc usage. When I first got it, my battery was dismal.
Mine hasn't been modded one bit yet, just installed some apps from the market and a weather widget.
Yes, tried that. It actually helped a little but I'm still getting poor results compared to some.
I have another theory/question. I use gmail as my only email account on my phone. Its set up through the system and it syncs to the gmail application on the phone. I also have it set up in the Samsung default email client (which I prefer). Am I wasting battery because the two apps are checking mail independently? Does the gmail account sync while the Samsung one checks at intervals (I have mine set to 1 hr)?
TheSopranos16 said:
Yes, tried that. It actually helped a little but I'm still getting poor results compared to some.
I have another theory/question. I use gmail as my only email account on my phone. Its set up through the system and it syncs to the gmail application on the phone. I also have it set up in the Samsung default email client (which I prefer). Am I wasting battery because the two apps are checking mail independently? Does the gmail account sync while the Samsung one checks at intervals (I have mine set to 1 hr)?
Click to expand...
Click to collapse
probably.
follow battery optimization guide in pimp my captivate.pdf thread. I get 1-2% battery consumption per hour with moderate to light usage.
heavy usage drops my battery about 4-5% per hour. By heavy usage I mean playing 3D games for hours str8

Disabling apps may cause huge battery drain.

As soon as I got my phone and set it up, I disabled all the AT&T bloatware in addition to google+, twitter, ypmobile, etc. Phone was always running great, but I kept wondering why I could never get over 3 hours screen time.
Fast forward to this morning....I re-enabled every app that I have disabled, and now I'm sitting at 3 hours screen time with 35% battery left. Didn't change anything else.
So I'm not sure why disabling apps caused a huge battery drain (I thought it would help with battery), but it did for me.
Might be something to check out if you are having battery issues.
Weird. Mine last longer. Check your auto-sync settings?
johnl199 said:
As soon as I got my phone and set it up, I disabled all the AT&T bloatware in addition to google+, twitter, ypmobile, etc. Phone was always running great, but I kept wondering why I could never get over 3 hours screen time.
Fast forward to this morning....I re-enabled every app that I have disabled, and now I'm sitting at 3 hours screen time with 35% battery left. Didn't change anything else.
So I'm not sure why disabling apps caused a huge battery drain (I thought it would help with battery), but it did for me.
Might be something to check out if you are having battery issues.
Click to expand...
Click to collapse
You said as soon as you got your phone set up you did this. That brings a few things to mind:
1) It sounds like it was your first or second battery charge. You need to fully charge/discharge a couple times before the battery's properly configured and you'll experience the device's full battery life.
2) Being that you just set it up, auto-sync would be working overtime for the first-time sync. You know, pulling in all your contacts, emails, calendar events, facebook everything, and so on, causing a higher-than-normal strain on the radio (either wifi or LTE, doesn't matter) and CPU.
Now that your battery's calibrated and your first-time sync is done with, give'er a full charge, disable the same apps again, and let us know how that goes.
truciet said:
Weird. Mine last longer. Check your auto-sync settings?
Click to expand...
Click to collapse
I've checked everything. Everything was OK, so I decided to re-enable the apps to see what would happen and now my battery life is where it should be.
Maybe I disabled an app that needs to be enabled or something. I don't feel like figuring out which one it is, so I just enabled all of them.
johnl199 said:
I've checked everything. Everything was OK, so I decided to re-enable the apps to see what would happen and now my battery life is where it should be.
Maybe I disabled an app that needs to be enabled or something. I don't feel like figuring out which one it is, so I just enabled all of them.
Click to expand...
Click to collapse
Do you work for ATT and just want us to turn the Bloat back on
craig0r said:
You said as soon as you got your phone set up you did this. That brings a few things to mind:
1) It sounds like it was your first or second battery charge. You need to fully charge/discharge a couple times before the battery's properly configured and you'll experience the device's full battery life.
2) Being that you just set it up, auto-sync would be working overtime for the first-time sync. You know, pulling in all your contacts, emails, calendar events, facebook everything, and so on, causing a higher-than-normal strain on the radio (either wifi or LTE, doesn't matter) and CPU.
Now that your battery's calibrated and your first-time sync is done with, give'er a full charge, disable the same apps again, and let us know how that goes.
Click to expand...
Click to collapse
I mean when I first set up the phone I disabled the apps. I've been using the phone for a few days with the apps disabled, so I just re-enabled them this morning.
This seems counter-intuitive. Until a few more people report similar situations I'm reluctant to believe that it was one of the apps being enabled/disabled that caused and fixed the problem.
I personally disabled all the bloatware that was possible and I've had phenomenal battery life. Sounds like your phone just needs to go through those first couple charge cycles to get the battery going properly.
yeah mate, have to agree with the guys above. i disabled all the ATT crapware and haven't had any problems. sounds like you've got a wake lock somewhere. download CPU Spy from the market and search the forums for Better Battery Stats to find the culprit
I've got quite a few things disabled and I hit 34 hours on a single charge earlier today. Sadly I had to reboot so the uptime chart only shows 24 hours.
After seeing this I've re-enabled all of the HTC bloatware (facebook, twitter, etc.). I have a feeling that my crappy battery life may have something to do with HTC's Sense software somehow trying to interact (with their widgets and whatnot) with my disabled apps. If that doesn't change anything, I'll try to enable AT&T's bloatware too and see if that makes a difference.

[Q] Please Help ! Android System Battery Drain on Nexus 5 after KitKat 4.4.2 update

Hi,
The battery life of my Nexus 5 has taken a dramatic hit since the 4.4.2 update. I think the culprit is Android System but the GSAM battery graph seems to suggest that the culprit is Android OS kernel. My Nexus 5 is on 4.4.2, unrooted, stock ROM and the build no. is KOT49H.
In short, my phone does not seem to have a wakelock issue but I can't verify because 4.4 does not allow wakelock access without root. It sleeps fine at night and in daytime when it is not in use. I only lose around 5% or less overnight with 2x battery turning off the data connection and only turning on data connection once every night. The problem is the Android System which drains at least 17% (sometimes 25%) of battery everyday and routinely sits on top my of battery usage chart with or without me actually using the phone. My usage per charge is typically around 6-7 hours with around 1 hour 45 minutes screen on time. I had extraordinary battery life before the update to 4.4.2 (lasting more than 1 day with over 3 or 4 hours screen on time). Now my battery life is completely shot. The battery graphs attached already represent one of the better days. Some days the Android system will drain at 25% or more. You will note my phone relatively slept fine without draining at night in the first 7 or 8 hours and then the battery drain started to take a nose dive after I woke up. I feel that whenever I start using the phone (with the screen being turned on), the battery drain will occur. My observations are as follows:
1. I use LTE but the reception at my home and work for LTE is not good so the radio jumps between LTE and H+ from time to time however I do not think the radio jumping contributes that much to the drain. The drain stays the same even when I am at a place with good LTE reception. I use wifi at home but i cannot connect to wifi at work (which sadly is another issue). The wifi is always off unless i use it at home. I do NOT have wifi scanning in the settings. I have wifi battery optimization on. I never use bluetooth.
2. My google now is off. My location setting is completely off with no location reporting etc..
3. My Google + auto back up is off. I do not use Facebook, Facebook messenger, Instagram, snapchat etc. I mostly use Feedly, Whatsapp, Gmails and look at stock quotes every day. I seldom take pictures, videos or listen to music.
4. I only have one widget dashclock widget. I have removed feedly and stock quote widgets from the home screen but they don't seem to affect my battery usage that much.
5. I use Automateit but only have a few rules such as setting vibrate on weekdays etc.. I do not have any profiles which are related to GPS or location which i understand would drain battery. I also use Dynamic Notification, Light Flow, Lux, Nova Launcher, Notification Toggle and the memory in general is always below 65% in the background. I also use 2x battery to save battery which is set at switching off data after I turn off the screen and it will only turn data in the background every 10 minutes.
6. I have tried safe mode and 9 out of 10 times the Android system drain remains the same. The only way to lower the Android system drain (albeit temporary) is when I turn off the phone and plug it in for a charge, then turn it on when it is full and still plugged in. After I unplug it, the Android System drain will lower to say 7 or 8 % but it will slowly creep back up to 20% within an hour or so.
7. The CPU usage overlay routinely has 9 + readings on the top when the screen is turned on (but with no app running). I think it means very high CPU usage.
8. I do not think Feedly is causing any problems. I deleted the app and the drain remains. I also do not think GSAM is that useful as pointed out by another member here. It points to one app. You delete that app and then the drain remains it will point to something else.
9. I have been using Greenify (non-root) but it does not seem to help with my battery drain as the drain might be caused by system apps or processes within the OS.
I don't know what else to do and this problem has been troubling me for more than 1 month now. Please help !
Update on 24/2/2014:
I have given up and factory reset my phone. After I reset my phone, the apps were installed via Google Play automatically. I also switched to ART. It was fine initially for at least one day. The apps were there but I did not use or enable most of them as I wanted to transfer all my data and tweaked the settings in one goal. I mostly just used Feedly, Whatsapp and Maps for navigation. Even with Maps and high accuracy GPS on, the Android System would go below 10% even though it would temporarily increase to say above 20% during navigation. This morning, I thought the battery seemed ok so I enabled Lux, Dynamic Notifications, Lightflow, Automateit, Nova Launcher and restore the settings to most of the apps.
The Android System drain came back within 2 hours and hit 25% of the total battery drain. My phone's battery dropped from 100% to 40 % in less than 5 hours and the screen on time was only around 1 hour! I never did any battery intensive actions. The most was turning on the phone to check my battery and whatsapped less than 10 messages back and forth ! Since the drain re-appeared, I have turned off completely the location setting, Google Now, sync for Google Plus, auto-backup for Google Plus. I have removed all widgets and disabled Dynamic Notifications, Nova Launcher, Light Flow, Lux. The drain still remains the same at 23% or more.
This is driving me absolutely crazy and I am sick and tired of spending so much time and energy on sorting out the cause for drain (and to no avail!) I spent a lot more time on trying to fix the phone than really utilizing the phone for my benefit !! I just sent an email to the Google tech support and hope they will help instead of sending me generic self-help sheet. Thanks all for listening and trying to help. I am just really disappointed with Google this time.
Use bbs to get wakelock info.
Feedly has got to go too
Sent from my Nexus 5 using Tapatalk
rootSU said:
Use bbs to get wakelock info.
Feedly has got to go too
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Thanks for your reply. My N5 is not rooted so I do not have access to wakelock stats anymore.
I have removed Feedly but the android system drain persists.
Not a lot that can be done without knowing the cause. Consider factory reset?
Sent from my Nexus 5 using Tapatalk
rootSU said:
Not a lot that can be done without knowing the cause. Consider factory reset?
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
I am hoping I don have to resort to factory reset and can wait for the 4.4.3 update but I guess my patience is running out.
Thanks for your help.
My missus' LG-P880 has exactly the same problem. Just started happening one day. It seems to be wakelock locator alarms according to bbs but there doesn't appear to be any reason for it. Its been driving me mad too. Luckily tho she's rooted so using app opps i disabled Google services location and it's kinda helped
Sent from my Nexus 5 using Tapatalk
Did you try another kernel ? When I changed to franco kernel, my battery life is better.
having weak LTE signal kills the battery but it should not be this bad.
Maybe you should try a factory reset and see if the problem still persist, if not then you have an rogue app somewhere.
You can use the process of elimination.
Start with disabling Dynamic notifications and Light flow as those have high potential for battery drain.
Sent from my Nexus 5 using Tapatalk
Elias_grodin said:
I am hoping I don have to resort to factory reset and can wait for the 4.4.3 update but I guess my patience is running out.
Thanks for your help.
Click to expand...
Click to collapse
Restart your phone in safe mode, and see the battery drainage...maybe it can help you.
It seems good for me
Sent from my Nexus 5 using Tapatalk
I had this same problem the other night. Get app ops starter from the play store. In there turn location off in Google play services and android system. Note, this may impact other apps. I don't use any that I need location for so it works for me.
Sent from my Nexus 5
I had a similar issue as well. For me I turned off a couple things and it really helped:
1. Turned off Cerberus, I believe checking location too often or incorrectly or something.
2. Turned off Account sync for Play Newstand. Noticed when a sync would occur, it would hang on Newstand for much too long which I think was waking device and keeping device awake during it's long syncs. Everything else would only take a min or two total.
3. Set G+ photo sync to only sync when on wifi and charging.
4. Removed Yahoo Weather app. Noticed yahoo weather app staying alive a lot too.
5. Removed Whatsapp. Probably unnecessary really, but any of those messaging/weather/location apps that I don't use often (if ever) I removed to make sure they weren't checking location in the background.
So far, I'm at 78% battery today when I would have been at around 30-40% usually, so that combo has made a huge difference.
It's going to be different for everyone I think, but basically just make sure you don't have any excess apps checking location in the background. And at least for me there seems to be something wrong with Play Newsstand sync hanging for long periods of time.
Yea... Even i had the same issues... Latest version killes ma deep sleep mode nd also some of a rules disappeared....
I was having similar issues and was able to narrow it down to syncing Google Services...
I found that often times Google Drive would get hung up when syncing in the background and chew up my battery.
What Google Services do you have set to auto-sync? I would narrow it down to the ones you only really need to have synced in the background and have the others sync up for you when you open them.
Also, in regards to your LTE/H+ signal, have you tried to flash another radio to see if there is any improvement? A poor signal can have a pretty significant impact on battery life as well.
Lastly, as mentioned by another user, Better Battery Stats, though requiring root, will make it a lot easier to track down the culprit of the issue if it indeed a rogue app somewhere.
Try different keyboard. I've a suspicion that latest Google Keyboard is the culprit.
I was having some unexplainable with BBS (no locks, etc.) battery drain. Which can only be resolved (though temporarily) with reboot.
So, I installed alternative keyboard (Swype in my case) and using it. So far, second day I don't have battery drain.
Update
Please refer to the OP for update. Thanks all.
battery after reset
After a second factory reset, I did not install a lot of the apps which I suspect have something to do with my drain - including Swype, Dynamic Notifications, Nova Launcher, LightFlow, Task Manager, 2x battery, Lux, Notification Toggle, Dash Clock, Automateit. I have also set my location to device only with no location history and history. I have also disabled Google Now. I have not restored my photos, music and videos to the phone yet. I have disabled sync for Google Plus, Google Drive etc.. I have also disabled auto back up for Google Plus. I am on ART.
The battery life (with around 25 % left) was around 6 hours 30 minutes or a bit more but with close to 2 hours 40 minutes screen on time. The screen was the biggest draw. Android system comes in second with around 13%. This is obviously better than before where I managed to squeeze maybe a hour or 30 minutes more but with 2x battery turned on in the background. I mostly used the phone for battery checking, whatsapp, Feedly, web surfing. I played games for around 20 minutes. I was not on wifi most of the time. Is this battery performance normal?
Thanks in advance.
Replacement offer by Google
Elias_grodin said:
After a second factory reset, I did not install a lot of the apps which I suspect have something to do with my drain - including Swype, Dynamic Notifications, Nova Launcher, LightFlow, Task Manager, 2x battery, Lux, Notification Toggle, Dash Clock, Automateit. I have also set my location to device only with no location history and history. I have also disabled Google Now. I have not restored my photos, music and videos to the phone yet. I have disabled sync for Google Plus, Google Drive etc.. I have also disabled auto back up for Google Plus. I am on ART.
The battery life (with around 25 % left) was around 6 hours 30 minutes or a bit more but with close to 2 hours 40 minutes screen on time. The screen was the biggest draw. Android system comes in second with around 13%. This is obviously better than before where I managed to squeeze maybe a hour or 30 minutes more but with 2x battery turned on in the background. I mostly used the phone for battery checking, whatsapp, Feedly, web surfing. I played games for around 20 minutes. I was not on wifi most of the time. Is this battery performance normal?
Thanks in advance.
Click to expand...
Click to collapse
I have reset the phone three times. After the third attempt, the battery drain for Android System would go back up to 20% plus. By the test of elimination, I thought I narrowed down the possible culprit to Light Flow and Dynamic Notifications. I uninstalled both of them but the battery drain remained 20% plus.
Google was willing to replace my device. I asked them whether the battery drain is likely a hardware or a software issue or a combination of both. They said (to my surprise) it is hardware issue. It seems they have come across quite a number of similar cases. I always thought it was a bug within 4.4.2 or in the google apps such as Google Play Services etc. and could be fixed by a patch or something. The phone also means a lot to me as it was a gift from my gf. I just don't want to go through the hassle of replacing the device if it is a software problem but I guess I am running out of choices unless I decide to wait for the update. What do you guys think?
It's definitely not a hardware issue. If you Google it there's threads all over the place with all different makes and models of phones having the same problem and no one can figure out why, apart from it definitely seems something to do with Google services (GmsCore.apk)
Your best option is to root your phone and use app ops and turn location access off for every app that doesn't need it. (pretty much everything apart from maps and weather apps)
Sent from my Nexus 5 using Tapatalk

Nexus 5 battery life

Hi, I really did some research but I find alot of ROMs and Kernels and I always get lost. I just need a good safe way to better the battery life of my Nexus 5 and keep it's stability and all the functions it has. So I wanted to ask what you guys recommend as Kernels, apps and lastly (I dont want to change unless its worth it) ROMs.
Sorry, its been hard without a PC to do decent research.
Enviado do meu Nexus 5 através de Tapatalk
The ROM has very little to do with battery life. It's all about the kernel or the apps.
We can't recommend kernels (or roms) as this is against the rules. They will all pretty much help with battery life. Just try them all- yourself.
Apps:
Greenify
Better battery Stats
That's it. Anything else I would recommend is going through all your settings and turning off things you dont need like location reporting etc
if battery life is all you are looking for... the difference are ... not much
Just disable google apps that you do not use, then you are good to go.
Locations settings, always off, activate only when needed. uncheck all under Google Location Reporting.
Disable NFC if not needed.
If you don't have good LTE coverage, change it to 3G under mobile networks.
For maximum battery life, do NOT activate Google Now.
eg. (These are apps I've disabled)
Drive
Earth
Email
Exchange Services
Face Unlock
Gallery (I use QuickPic as alternative)
Gmail
Google Hindi input (These ones gets disabled once you uncheck them from input settings)
Google Play books
Google Play Games
Google Play Magazines
Google Play Movies & TV
Google Play Music (I use Poweramp *Paid)
Google+
Keep
Maps
News & weather
Quickoffice
Street View
Tags
TalkBack
Hangouts (I use HoverChat *Paid)
Check this thread mate...
http://forum.xda-developers.com/google-nexus-5/general/nexus-5-battery-results-t2509132/
CitizenLee said:
Check this thread mate...
http://forum.xda-developers.com/google-nexus-5/general/nexus-5-battery-results-t2509132/
Click to expand...
Click to collapse
What he said ^^^^
It doesn't matter what's on your phone....you should be able to get good battery life. Its all about setup and usage.
Just gotta troubleshoot issues occasionally.
Please check the thread linked above, and read read read. . (Start on last page and read back for a bit....a lot of good info)
On my phone it certainly seems to have something to do with signal quality. At home, I can put the phone next to the bed at night with it fully charged and wake up with it at about 95 or 96%.
At work a fully charged phone just sitting on my desk drops to about 90% in only a couple of hours.
The signal quality in my building at work is pretty poor, so I'm guessing the phone is using a lot of extra energy desperately searching for a better signal .
Claghorn said:
On my phone it certainly seems to have something to do with signal quality. At home, I can put the phone next to the bed at night with it fully charged and wake up with it at about 95 or 96%.
At work a fully charged phone just sitting on my desk drops to about 90% in only a couple of hours.
The signal quality in my building at work is pretty poor, so I'm guessing the phone is using a lot of extra energy desperately searching for a better signal .
Click to expand...
Click to collapse
Poor and searching for signal is probably the biggest battery drain there can be.
Get gsam. And after your at work a few hours, open and click on "phone radio". It will say how long your phone was actually searching for a signal. That's a huge battery killer.
The only cures, get on WiFi. Or go into airplane mode. Toggle off data might help, then you'd still get texts and phone calls.
kj2112 said:
The only cures, get on WiFi.
Click to expand...
Click to collapse
I do have wifi on in both locations, so the wifi part of this doesn't help. I suspect data isn't the issue, just the cell connection. My old phone used to randomly reboot inside this building when trying to get a signal . I guess I should install gsam just to verify, but the signal is really the only difference between work and home, so I'm pretty sure that is the issue.
Claghorn said:
I do have wifi on in both locations, so the wifi part of this doesn't help. I suspect data isn't the issue, just the cell connection. My old phone used to randomly reboot inside this building when trying to get a signal . I guess I should install gsam just to verify, but the signal is really the only difference between work and home, so I'm pretty sure that is the issue.
Click to expand...
Click to collapse
Usually battery drain from a low or bad signal is only a big issue while on data. On WiFi it doesn't affect the battery much , if any. Its from apps trying to sync through data on a bad or no signal. So on WiFi, that's not an issue.
At home I get fairly poor reception...sometimes only a bar...with some time spent searching for signal, but my battery times are at their best at home. On WiFi.
It could be a network issue. Some devices on networks can affect your device by spam polling your phone....might want to also get wakelock detector to see that. If the LAN is draining your battery, there will be wakelocks from it.
Try gsam and compare work results to home results. Especially good would be trying at least a few hours of total standby to see the difference at both locations. You'd have to reset gsam stats to start your standby test at all zeros though. A reboot will reset gsam.
Good luck!
Remove all google [email protected]%# ...
And disable autostart from programs like poweramp which start on boot...use romtoolbox and autostart manager
Of course, pay attention to what you're going to disable
If You will try and You have some doubt ask here
I use a lightweight aosp ROM, a minimal gapps package, stock kernel, disabled some programs from boot and run in background...and battery duration is good
Don't ask to us roms/kernel combo, please Questions like your are not allowed on xda
Always read the users feedback and make Your choice
And... My doubt..is it really needed to change the kernel ??
Give stock kernel a chance... That's all I can say...
And make sure to charge your phone the right way
Hi! Anyone knows if I can disable the processes that Viber starts every so often? Like the in-app processes, it keeps on running in the background consuming a huge chunk of my battery. I already emailed Viber about it but unfortunately they don't have a fix for it.
Sent from my Nexus 5 using Tapatalk
natadecocolococo said:
Hi! Anyone knows if I can disable the processes that Viber starts every so often? Like the in-app processes, it keeps on running in the background consuming a huge chunk of my battery. I already emailed Viber about it but unfortunately they don't have a fix for it.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Greenify?
rootSU said:
Greenify?
Click to expand...
Click to collapse
I'll try that. Thanks.
kj2112 said:
Try gsam and compare work results to home results. Especially good would be trying at least a few hours of total standby to see the difference at both locations. You'd have to reset gsam stats to start your standby test at all zeros though. A reboot will reset gsam.
Click to expand...
Click to collapse
OK, I turned the phone off, charged it to 100%, then pretty much let it sit doing nothing after rebooting. After sitting overnight at home (where the battery doesn't drain much) the "Phone" app was way down in the list:
GSam Labs - Battery Monitor - Export Data
Phone
Apr 30, 2014 9:55:45 AM
Usage Details
CPU Usage:2s
CPU Usage (Background Only):2s
Keep Awake:19s
Number of Wake Locks:177
Number of times waking device:2
App UID:1001
Wakelock Detail
RILJ8.8s(136)...
Did the same recharge with phone off at work, rebooted, then let it sit on my desk for just a couple of hours, and "Phone" is now the 2nd biggest culprit in the apps list:
GSam Labs - Battery Monitor - Export Data
Phone
May 1, 2014 10:35:57 AM
Usage Details
CPU Usage:3m 24s
CPU Usage (Background Only):3m 24s
Keep Awake:12m 1s
Number of Wake Locks:1167
Number of times waking device:141
App UID:1001
Wakelock Detail
RILJ11.9m(1031)...
Wifi was on in both locations (with a good signal), I even turned off location to prevent that overhead. It just hates the environment at work .
Claghorn said:
OK, I turned the phone off, charged it to 100%, then pretty much let it sit doing nothing after rebooting. After sitting overnight at home (where the battery doesn't drain much) the "Phone" app was way down in the list:
GSam Labs - Battery Monitor - Export Data
Phone
Apr 30, 2014 9:55:45 AM
Usage Details
CPU Usage:2s
CPU Usage (Background Only):2s
Keep Awake:19s
Number of Wake Locks:177
Number of times waking device:2
App UID:1001
Wakelock Detail
RILJ8.8s(136)...
Did the same recharge with phone off at work, rebooted, then let it sit on my desk for just a couple of hours, and "Phone" is now the 2nd biggest culprit in the apps list:
GSam Labs - Battery Monitor - Export Data
Phone
May 1, 2014 10:35:57 AM
Usage Details
CPU Usage:3m 24s
CPU Usage (Background Only):3m 24s
Keep Awake:12m 1s
Number of Wake Locks:1167
Number of times waking device:141
App UID:1001
Wakelock Detail
RILJ11.9m(1031)...
Wifi was on in both locations (with a good signal), I even turned off location to prevent that overhead. It just hates the environment at work .
Click to expand...
Click to collapse
I think that is just the difference in signal quality. It seems to be pretty common to get degraded signal at work places due to larger structure sizes as well as more users per cell tower.
Phone Idle is from the voice network, Cell Standby is from the data connection.
Is it normal for Google Play Services to be running in the background always? The gcm and the location service is always on.
Sent from my Nexus 5 using Tapatalk
natadecocolococo said:
Is it normal for Google Play Services to be running in the background always? The gcm and the location service is always on.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Yup
And its worse with location on for sure....battery wise anyway.

Getting reasonable battery life

Hey guys, just wanted to throw out what I have found re: reasonable battery life.
As most of you know, you can tell when the phone is not getting what I consider reasonable battery life.
Here are the things that I found worth doing:
1: Greenify apps if you can. Unfortunately, Facebook is one of the worst violators of battery and if you greenify it, you will go a long way towards having decent battery life. Of course, then you don't get your Facebook notifications, but for me, this is a plus.
2: Battery Doctor. You can set it to kill apps when the screen is off. There is a whitelist as well so you can keep certain apps running instead being killed.
3: Adjust the auto brightness curve. This seems to work well. Keep the screen reasonably bright but no more than necessary. I think this might work better than just a fixed brightness level because if the area gets really bright, at least the screen will react and become brighter so you can still see the screen. To me, the screen is a battery killer.
4: If you have a super AMOLED display supposedly you can black out the screen with a dark UI. Not sure how much this helps.
5: Custom Kernel. I have only tried IceCode and insanity. Both were giving reasonable battery life. I tried the lower voltage tables in IceCode but didn't notice much difference.
For me, even though I tried several different ROMs, if I did the above, I got reasonable standby/sleep times. It was usually 1 to 1.5 percent per hour in sleep. When the screen was on, battery life was totally dependent on screen brightness. For me, reasonable is with decent use - check/reply to mail a few times an hour, browse web, text, talk abut an hour a day, etc... from 7a-3p and still have around 70% left. For me, the phone still needs charging every day though. Any other tips???
For Facebook, I use the Tinfoil For Facebook app, which is pretty much just a wrapper of the mobile browser version. Beside the battery drain the official app causes, the privacy concerns with the addition of them listening in on your mic makes this worth it.
Hi all. Can anyone please suggest which Rom & kernel combination gives best battery life for Ville c2 . Main use is web browsing on mobile data & some casual gaming.
I recently got this device and am new to this (c2) forum.
Sent from my HTC One S using xda premium
I use the "Snapdragon BatteryGuru" application.
A feature I love is that I can set what apps have to be updated ever, when I use them or basing on my use. For example I installed Facebook, Twitter, a mail client and Skype on my phone. I can choose that the mail client has to be updated ever, Facebook and Twitter basing on my use, and Skype when I use it.
BatteryGuru can enable some features like the Wi-Fi or the Mobile data basing on my use. For example, I surf the internet between 8:00 AM and 3:00 PM. The Snapdragon's application registers this activity and it will automatically enable internet connection between 8:00 AM and 3:00 PM.
Another feature I like is that I can enable a low power mode when the battery reaches a choosen level and disable, for example, the mobile data, Wi-Fi, Bluetooth, apps update, etc.
Awesome app!
I saw that app. Will need to check it out. Sounds like useful features.
Thanks! I'll try Greenify with Facebook.
I'm quite satisfied with the AOSPA 4+ ROM (stock kernel). I unplug the phone at 9am and around 10pm - 56% battery remaining (with Greenify + Auto brightness + Dark UI theme) with normal usage like browsing/checking emails/phone calls every now and then.

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