yashsingh1/xdaforums huggingface dataset:
[Nexus S Q&A, Help & Troubleshooting] demarcolister:
Once upon a time, I too was one of the sullied - one those unfortunates souls, plagued with poor battery life on a Nexus S (stock FTW), brought on by an innocent (and joyful) upgrade to ICS 4.0.4 from 2.3.6.

When I first discovered the trouble, with great gusto, I ran to the interwebs and dutifully followed suggestions of restarting the phone or draining the battery, but alas - it was all to no avail. There is, however, a happy ending to this story. With effort and perseverance, I've since significantly improved performance. Here is my brief tale of success.

After the upgrade, Android (praise be its name!) decided to start, in the background, every single application on the phone. Verily Snake '97 was indeed running all the time. The horror!!! The game is entertaining certainly, but hardly worth keeping alive at the cost of other, more critical apps.

I was not deterred and took matters into my own hands. Using Manage Apps -> All (not Manage Apps -> Running, mind you), I went about Force Stopping each application (including some Android core apps). It was tedious and frightening. I was very careful and hesitant, as you should be if you are affected by a similar malady.

By the next day, I saw much improved battery life (hooray!), yet I wasn't free and clear. The hold of evil had not been loosened completely.

I found within, a strange and dangerous lock (wakelock - was that its name?) keeping the Gallery in the list of active applications, even when I had not used it for some time. It refused to move to the cached apps list. Puzzled, I scratched my empty head. The interwebs were of no use this time - I was on my own.

(cue ominous music)

Peering within, in the Sync section I found the system was trying to sync photos on an account where the checkbox for syncing was not selected. o_O

A quick off-on-off stopped the syncing. The app slinked off the Running apps list. Soon, I was overjoyed, for I was experiencing improved battery life!

I've now returned to performance much closer to that from days of 2.3.6. My Nexus S' battery now reaches 40%-30% in ~16 hours, with always-on 3G, Wifi and GPS, oft use of phone, contacts, messaging, whatsapp, twitter, foursquare and browser, and infrequent use of music, market, maps, camera and rarer usage of games like Angry Birds (which consumes vast amounts of battery) and gallery.

All is well with the universe.

Certainly, this tale may or may not be a mirror to your own. Should you be experiencing similar problems, I hope my tale brings you solace, and provides a means to the end of your troubles.
[Nexus S Q&A, Help & Troubleshooting] Harbb:
:eek:

You, my friend, deserve a cookie for such good writing.
[Nexus S Q&A, Help & Troubleshooting] AeroEchelon:
@demarcolister Awesome first post here on XDA.

Great story too. Most will blame battery drain on the custom ROM/kernel they flash and fail to realize their battery drain is usually caused by a rogue app running in the background ...
[Nexus S Q&A, Help & Troubleshooting] chronophase1:
I've never had good luck with the stock gallery app. I always freeze it via adb when I flash a new ROM. It seems much worse in ICS. It would always start back up.
[Nexus S Q&A, Help & Troubleshooting] Harbb:
Stock GB gallery was an absolute joke. Slow, missing thumbnails, weird background and hard to see what you're scrolling through. The stock ICS gallery i actually prefer over alternatives. Though i don't use picasa so that is disabled. Never an issue with it (besides always showing my damned album covers).
[Nexus S Q&A, Help & Troubleshooting] demarcolister:
nom nom nom!! :D

I was quick to (negative) judgement too, but I figured that Google would not (certainly!) release an update that completely cripples a modern and high-selling device.

Agreed! In fact, I'd accept, grudgingly, if album covers show up in the gallery (although, truly they should not), but I do not, under any circumstance, want to see the icons (tick for yes, cross for no, i for icons, etc.) used by an application in my Gallery. Idiocy!

What is the solution? I wish to remain Stock, so rooting and editing the equivalent of plist or config files is not an option. At least 'Camera' is the first option, always! That makes it usable, but as soon as I use picplz or camera360 or instagram their folders get shuffled in position. Is Google hinting at something!? *sigh*
[Nexus S Q&A, Help & Troubleshooting] sdhanjal15:
Hey guys...

Sent from my Nexus S
[Nexus S Q&A, Help & Troubleshooting] arr555:
GNS, i9023

o2 UK

ICS 4.0.4

rooted

UP TO 14H

using 3g inet -about 1.5h

wifi - 30mins

few photos

no music, no calls, all time on 2g network

is the 14hours okay?
[Nexus S Q&A, Help & Troubleshooting] anglergab:
If you are in an area with poor GSM/UMTS signal coverage, then maintaining a continuous GSM/UMTS connection can consume far more power than otherwise. The radio will operate on much higher transmission power levels.

In fact, ususally the half of the battery-energy is consumed by the GSM/UMTS radio, while the other half by staying alive the core electronic parts (phone idle) while in idle state, not awake.

You can save a lot power by disabling UMTS (3G) functionality if you don't need/use it.

3G consumes more power than 2G (GSM). Thus if you don't have a data plan, you should set 2G mode only.

The most power is consumed by the display (particularly S-LCD). You can save some power through minimizing backlight brightness.

Some apps can make wakelocks, which means the phone cannot enter suspend state. Or while in suspend state, it can wake up for extended periods, using the CPU but not the display. If an app has the corresponding permission (wakelock), then it can make the phone fully awake at ANY time, without you'll ever note it.

Auto-sync consumes significant power too. So if you don't need it, you should disable it, particularly photo sync (in Settings). The Gallery app and its indexing process can take much battery power.

If an app wakes your phone frequently, then the best you can do is removing it (and searching for another app, which doesn't wake unnecessarily your phone). Remember: stopping an app from starting after boot won't help: apps can start and run anytime (in response to triggers).

After disabling unneeded services, processes, syncs, and removing apps, always make sure you reboot cleanly your phone ("cleanly" means that you shouldn't use the Reboot option in some custom roms, because it won't make a proper restart: thus you should power off then on your phone).
[Nexus S Q&A, Help & Troubleshooting] timetosave:
How could you confirm that the photo sync with Gallery is using a lot of battery? Would it be reported separately or would it show up under Android System or Android OS?
[Nexus S Q&A, Help & Troubleshooting] chronophase1:
Should show up as gallery in the battery usage chart. Check the data usage also. I usually let it sync once and just disable it if I'm flashing a ROM and forget to do it beforehand.
[Nexus S Q&A, Help & Troubleshooting] vyszard:
Issue Confirmed

I have similar problem with chillerz here, if not worse. I got my Nexus S about a week ago and I upgrade it to ICS right after it, so I don't know how is the battery performance and CPU usage in Gingerbread.

But overall my Nexus S only lasts 3,5-5 hours, with occasional browsing, facebook, 1-2 calls, sms and whatsapp. And maybe a little game. But only a little. In that 4 hours, I only got 2 hours of screen on time, which is not normal, according to other's experience. What bothers me though, just like chillerz said, is that the CPU runs full speed on 1000MHz most of the time, with system_server as the highest demanding process.

What I tried:

1. There is a bug report about high CPU usage of system_server if auto-rotate is on. I tried to turn auto-rotate off then, but nothing changed, I still got my CPU sprinting all the time.

2. Draining the battery completely and then charged it until it was full. Nope, still bad battery.

3. Turn USB debugging on, like some people in similar thread suggested, but still no luck.

I haven't tried to do factory reset though, since I really want to avoid that if I can. I don't want to get through the whole process of installing app and setting things again. And also it is not yet proven to solve the problem.

Or maybe I just got myself a bad device?
[Nexus S Q&A, Help & Troubleshooting] chronophase1:
I would start by disabling FB as its a known battery killer. If you don't have betterbatterystats, grab that as well. You said you didn't factory reset before your update. Most of your problems could probably be eliminated by doing so. Last resort, but you may have to do it. Sucks, but it may be worth it.

Sent by pocket technology
[Nexus S Q&A, Help & Troubleshooting] vyszard:
Thanks for responding!

I do have betterbaterrystats (now), but honestly I don't understand as to what I should looking for there. Can you explain more about that please?
[Nexus S Q&A, Help & Troubleshooting] chronophase1:
Its been a while since I've used it now. There's a dedicated thread for it. But basically what I did was check out the partial wakelocks section to see what was causing my phone to stay awake. In my case, it was Android System. But because of the app, it helped me narrow down what exactly what in the android system was causing it. There's an FAQ in the application, but your best bet is to hit up the thread. It's always active.

Sent by pocket technology
[Nexus S Q&A, Help & Troubleshooting] ykphuah:
For me it was Settings->Location Services->Google's Location Service.

Once I turned that off, while leaving latitude signed on, and gps on, wifi on, 3g on. My battery life improved significantly.

You need to open the Partial Wakelock screen on BetterBatteryStats, then sort it by Count.
[Nexus S Q&A, Help & Troubleshooting] chronophase1:
I have that ticked and never have any wakelocks from it:confused:. I thought that was only used when requested. I have it for using News and Weather. I also use Autostarts though, so that might be why Maps never fires it up unless I do it manually.
[Nexus S Q&A, Help & Troubleshooting] vyszard:
Okay so betterbatterystats showed me the main culprit (by far compare to others) for partial wakelock is "AlarmManager". What does it do? Can I turn it off?
[Nexus S Q&A, Help & Troubleshooting] ykphuah:
The knowledge base is your friend. :)

https://github.com/asksven/BetterBatteryStats-Knowledge-Base/wiki/AlarmManager
[Nexus S Q&A, Help & Troubleshooting] meatty:
battery life sucks

Hi,

I've been a lurker on XDA for a while, and recently, I've had a problem with my battery. When I upgraded from Stock GB (unlocked/ rooted) to stock ICS, my battery went from reasonable to unusable. Since that time, I've changed my ROM and my Kernel (currently running Matr1x and AOKP), and calibrated my battery. I've tried some of the things in this and other threads (force stopping programs, turning off location services, bluetooth), to no avail. I got BetterBatteryStats and did what they recommend over in the BBS forum - I charged it overnight, then unplugged it and let it collect stats for a while.

I attached the BBS file over in the BBS forum (attached here for you to see what they saw) and during the 1 h 43 m that this dump file was created, my battery went from 100% to 84% without turning on the screen except to create the dump file.

When I posted over in the BBS forum, they said to uninstall facebook, gmail and turn off wifi and autosync. I'm not too concerned about facebook, but turning off gmail and autosync are non-starters - I'd rather go back to GB than lose those functionalities.

They suggested trying a different ROM. I'm currently on AOKP ROM and Matr1x Kernel. Can anyone suggest a kernel and/or ICS rom that will give me reasonable battery life?

Nexus S I9020A
[Nexus S Q&A, Help & Troubleshooting] chronophase1:
Yeah. Mine isn't much better to be honest. Its a hit or miss with life on ics it seems. I haven't changed my usage habits too much between my phones and the Nexus is pretty bad. Then again, my G1 was much much worse. Lol. You can try doing a factory reset if you're willing to deal with downloading your apps all over again and setting everything back up. When I rocked Matr1x, I used a screen off profile that helped a little bit. Lionheart around 800 Max and screen off I think I had Wheatley set to 400.

Sent by pocket technology.
[Nexus S Q&A, Help & Troubleshooting] polobunny:
Nothing is really keeping your phone awake to be honest. Gmail has a few wakelocks, nothing abnormal though, and it's not keeping it awake for long (23s total). Same for Facebook (7s total).

You can see your phone had bluetooth on for 1h43. That's a battery drain, if you're not using it I suggest you turn it off.

Same thing for data. If you're not using it, turn it off. From the log you don't seem to have bad signal, which is good, because bad signal can kill your battery even more.

Do you use your calendar and mostly calendar syncing? It seems to have a few wakelocks, which could end up hurting your battery.

As for the kernel, are you using the latest version? v22 has much better results than the earlier ones, so that might help too. Stability prior to this wasn't super great. Otherwise I had good luck with Air kernel v4.4 and the settings in my signature. I dropped 3% in around 5 hours, arguably without doing nothing however.

I would also look into your screen brightness settings. You can always take a screenshot of your battery stats in Android to show us more.
[Nexus S Q&A, Help & Troubleshooting] meatty:
Yes, I use bluetooth while in the car, but not otherwise. Is there a way to automatically turn it off, for example, when connecting to a specific wifi network? Or really any wifi network? Since I know I won't use Bluetooth while connected to wifi, that would be useful.

I did notice one interesting thing yesterday, when I was in a different car - in my car, I just have bluetooth headset functionality, but the other car I had audio, etc. that turned out to be something that really gobbled up battery, even though the only thing I used was the headset functionality. Is it possible to just use bluetooth in a restricted form (i.e. don't bother with audio sharing, just connect as a headset)?

Not really sure I understand - I am always using data. wifi? if there's a wifi network, I definitely prefer to connect to it, rather than using the much slower 3G network.

I use it primarily for gmail, but also calendar and contacts. Sure, contacts may be able to be done daily, but I will forget to sync, and the point of the smartphone is that I don't have to remember stuff! :)

I just downloaded v22 - I'll let you know if it helps.

I keep my brightness on auto unless I'm outside in the sun. outside in the sun I need it full up - I live in Texas and the sun is very bright... Besides, my problem is not the drain when the screen is on - it's the drain when the screen is off.

I got screenshots of the battery, as well as a couple more BBS dumps (with more realistic days), but I can't post right now - I will add them later, when I get a chance.
[Android Q&A, Help & Troubleshooting] camaro2ss77:
I have tried a few ways from in these forums and non of them have worked on my phone any suggestions here?
[Samsung Epic 4G Touch] blakjak220:
I was on CM9 alpha 1 with the stock kernel

I tried to revert back to EL29 (via Odin) so that I could flash the new alpha 2

It boot-looped

I tried several different ROM/kernel/modem combos for GB ROMs (all .tar's that I flashed through Odin)

Still bootlooping

What am I missing? I'm pretty sure it's not completely screwed since it still gets to the 4G screen and then reboots

Thanks in advance for the help... and if there's some info that you need to help me just let me know, I'll pretty much be glued to the screen since this phone is my only one and I won't be able to use it till I get this fixed up...
[Samsung Epic 4G Touch] MeWarning:
Can you get into recovery mode?
[Samsung Epic 4G Touch] blakjak220:
Yeah, I'm on CWM v5.0.2.7

Can I just flash something from there?

I thought you weren't supposed to flash stuff thru CWM while on an ICS ROM, that's why I used ODIN
[Samsung Epic 4G Touch] blakjak220:
Come on folks in XDA-land.. I'm dying here...
[Samsung Epic 4G Touch] blakjak220:
Ok... After a few tries I managed to get a backup restored.. So I'm back to an EL29..
[Samsung Epic 4G Touch] Epix4G:
When you Odin and it boot loops go into stock recovery our cwm if you got it wipe and reboot it will do it every now and then
[Samsung Epic 4G Touch] blakjak220:
Cool, good to know...

And after all that trouble getting to 4.0.2, Lexicomp (which is a medical app) isn't compatible with it yet.. and I have finals coming up in which I have to have that app... so back to GB it is, at least until finals are over.
[Nexus S Q&A, Help & Troubleshooting] tylerwatt12:
Is this normal?

The color is off on my camera, but does anyone have those streaks when showing a pure red screen? I'm about to send it away for an RMA
[Nexus S Q&A, Help & Troubleshooting] tylerwatt12:
I did send it in, hopefully i'll get it back before the 20th
[Nexus S Q&A, Help & Troubleshooting] newuser02:
Thats suzks for you dude,,, let us know how it works out.. picture is way too big.
[Nexus S Q&A, Help & Troubleshooting] polobunny:
This is actually normal. Using a software such as Screen Filter and looking at a pure grey image will show the screen pattern pretty clearly. Very noticeable at lower brightness, not much of an issue otherwise.
[Nexus S Q&A, Help & Troubleshooting] tylerwatt12:
it was only on the right side of the screen though
[Nexus S Q&A, Help & Troubleshooting] newuser02:
Dude, try this. you can see better. There is problem..in fact it is big problem.

[/IMG]
[Nexus S Q&A, Help & Troubleshooting] polobunny:
You might just have noticed it now, and not many people notice it. I had to show it to simms22 once, because he never saw it before. But once you see it, you can't ignore it. :P

http://xdaforums.com/showthread.php?t=1379115
[Nexus S Q&A, Help & Troubleshooting] tylerwatt12:
I know about the gray colored one, I've always seen that one. but this one just appeared recently
[Nexus S Q&A, Help & Troubleshooting] polobunny:
I gotta say yours seems very noticeable. Display about to die maybe? Did you have the brightness on high a lot of the time? Anything in particular?
[Nexus S Q&A, Help & Troubleshooting] tylerwatt12:
nothing in particular. I first noticed while using Launcher 7, all the red tiles had a lot of striping. I'm talking about pure red #FF0000. The gray noise has always seemed minimal. I only noticed it while using MIUI or Gingerbread. I just hope they don't replace my screen with the S-LCD. the SAMOLED is still much better than the S-LCD
[Nexus S Q&A, Help & Troubleshooting] polobunny:
Although I cannot confirm this right away, I highly doubt replacing it for a S-LCD is as easy as plugging it in. Phones have to be cost effective, so the less time spent repairing them, the better. I don't think you'll have anything but a SAMOLED.
[Nexus S Q&A, Help & Troubleshooting] tylerwatt12:
Well I just got it back.

And they didn't fix the issue

although they did replace my charge port and volume buttons.

So, not a complete loss
[Nexus S Q&A, Help & Troubleshooting] simms22:
true. its really hard to see unless youre in an extremely low light situation with the screen brightness all the way down. i still dont really notice it unless im looking for it.
[Nexus S Q&A, Help & Troubleshooting] tylerwatt12:
can someone look at a pure red color on their phone at full brightness? and tell me if you have the same problem?
[Nexus S Q&A, Help & Troubleshooting] simms22:
i dont see it on red, in low and high brightness.
[Desire Q&A, Help & Troubleshooting] Tomaco:
I rooted my Desire 1 year ago and since then I still have Clockworkmod recovery 2.5.0.7 and 1 year old radio :)

My question is if I need to updatel, what are the benefits of new Recovery? Also I noticed Recovery Touch, do you recommend it?
[Desire Q&A, Help & Troubleshooting] bortak:
Radio: If it ain't broke, don't fix it.

Recovery: Yes, it's pretty good, and a lot easier and more intuitive to use.
[Desire Q&A, Help & Troubleshooting] robla1000:
Agree with Bortak. EXT4 Touch has more options than CWM. You still can restore older recoveries made with CWM.
[Desire Q&A, Help & Troubleshooting] Tomaco:
But there is also CWM touch. Which one is better?
[Desire Q&A, Help & Troubleshooting] MatDrOiD:
I recommend to test yourself.
[HTC Sensation] ghosted619:
Im sorry guys if this has bin answered before but Im realy desperate to fix my expensive phone, i hope i didnt ruin it, I Fallowed steps to unroot and turn s-on but after s-on it keeps booting to the screen when it shows s-on i keep rebooting and nothing keeps booting there.

Any help?
[HTC Sensation] ghosted619:
any help?
[HTC Sensation] dublinz:
the best solution for you is to follow and install this ICS RUU from bootloader http://xdaforums.com/show....php?t=1581333... And please read the OP
[HTC Sensation] ghosted619:
Hey dublinz im new here, also im on tmobile in USA, whats OP mean?
[HTC Sensation] ghosted619:
Thanks so much, i basically just added the current firmware and my phone is back, thanks!
[Android Themes] bqeli:
here is some of my photoshop play for non htc wana look like icons hope you like it

rate it so i can make some more:D
[AT&T Samsung Galaxy Note I717] PeartFan40:
In all my years of applying screen protectors I FINALLY got one installed perfectly. First shot! No bubbles, lint, dust...nothing, and it's centered perfectly. This will probably never happen again. Woot!!

The screen protectors I ordered from Amazon arrived today. I ordered the Realook anti-glare screen protectors for the Note. They came in a 2 pack, and cost $15.99 + shipping. I know there are cheaper versions out there, but every time I purchased inexpensove protectors, they ALWAYS had those wavy lines, which drove me bananas. This time, I decided to get more expensive, higher quality ones, and I'm glad I did

One thing I noticed right away with this brand, is the feel. Anti-glare protectors have a smooth feel to them, which is nice, because I can't stand that tacky feel I experience with nakid glass or clear protectors. With this brand however, there is a slight gritty feel to them. You can hear your finger sliding across this protector. The quality is definiately there, just not sure how I like the feel of them. Of anybody else is using this particular brand and type, please chime in.
[AT&T Samsung Galaxy Note I717] ZPaul2Fresh8:
I never use them. Totally kills the experience for me. I like the feel of the glass. Plus with this phone having gorilla glass I should be ok.

Sent from my Samsung Galaxy Note™
[AT&T Samsung Galaxy Note I717] Reclaim:
http://xdaforums.com/showthread.php?t=1512209
[AT&T Samsung Galaxy Note I717] ZPaul2Fresh8:
Cool and innovative but I don't think its needed, at least not for me. I'm pretty good handling my gadgets.

Sent from my Samsung Galaxy Note™
[AT&T Samsung Galaxy Note I717] Talderon:
+1 for this one.. I think I got my 10 char now... :)
[AT&T Samsung Galaxy Note I717] PeartFan40:
Gorilla glass is beutiful, but I can't tolerate the glare/reflection one bit. It drives me insane. It would be nice if the mobile field caught up with the optocal field. There is A/R coating technology that works wonderfully with glare/reflection. A simple layer of this inside the display glass would put an end to this common problem.
[AT&T Samsung Galaxy Note I717] PeartFan40:
Just to clarify, I only use anti-glare protectors to cut down on glare and refelction. Otherwise, I wouldn't use them. I'm 100% confident that gorilla glass can withstand everyday use. :)
[AT&T Samsung Galaxy Note I717] Jasmynsway:
Way to go! Screen protector install is worst than standardized tests. Lol
[AT&T Samsung Galaxy Note I717] mark1s:
Cool! I missed my shot with the Glas.t protector for myself. :( I hate dust lol
[AT&T Samsung Galaxy Note I717] aj_vogtman:
Yes, I got that pair and the bubbles weren't bad. I'll put up with the texture to have the anti-glare finish.
[AT&T Samsung Galaxy Note I717] oka1:
If true you got it the 1st try...... then you should play the lottery also !!!