yashsingh1/xdaforums huggingface dataset:
[Nexus S General] AngelosDracul:
Pics, or it never happened.

All kidding aside, I just switched from the Epic 4G (original) to this little bad boy. Rooted as soon as I got it, and am running MIUI (one of the newest English builds).

Juice defender is garbage.

Back in point, said rom, and whatever kernel came with it, not overclocked, and I normally turn data off when not in used, and use wifi whenever possible.

Last battery test, i pushed over 28 hours on moderate to heavy use, and idle drainage was minimal. Maybe half a percent to one.

Oh, and the one main thing that REALLY improved battery life? Killing google talk. Holy hell did that make my phone happy!

Sent from the Next Level Nexus of 4G proportions.
[Nexus S General] waterface:
Seems like many with MIUI ROM are reporting good battery runs. I must say I had the same impression, although I did not test thoroughly (I prefer stock Gingerbread launcher by FAR), especially on idle drainage.

Looking to find the least power-demanding combination of ROM and kernel, currently on NSCollab + Matr1x 9.5.
[Nexus S General] chinopski:
try good ROM + kernel combinations.
[Nexus S General] evil_fish:
Yes, sure. I as stated I was testing the juice. I only use it for making phone calls and 15-30 minutes of twitter and 30 minutes of reading other thing everyday.

Here are the screen shots of my latest usage and battery consumption.

It's been 2days 9h with Wifi on 24/7(okay, not really. I turned it off for a couple of hours.) And there are 46% of the battery left. :D I am really happy with it.

However as I also stated. If I turn on 3G, it's a whole different story. But I found myself not using 3G so often lately at all. especially when I can pre-cache the Google maps.

And killing Google talk? I will try that as well. Thank you for the tips!

ps: one more thing I think worth to mention. I did not use any Facebook app at all. I quit fb a few weeks back. I don't know if installant fb app help also in any chance.
[Nexus S General] BrianDigital:
Didnt know psps had cell radios in it fighting to get signal obivously troll
[Nexus S General] kktk:
What was the total screen "on" time?

I am amazed some of us can go that far....most of us cant get through 8 hours :(
[Nexus S General] Braneless:
Here's where I'm at;

3.5hrs of screen on time, stock battery, NSCollab Sprint 1.0.51, Matr1x 9.5.
[Nexus S General] kktk:
That's good with 3 1/2 hours of screen time.

I may just have to get away from stock rom after all! :)
[Nexus S General] dead78:
just have to weigh in with this:

if you're using a smartphone with data turned off the majority of the time, there's no point in owning a smartphone.
[Nexus S General] Braneless:
That's an assinine point of view. I can sync email when I'm ready to read it and turn on 3G if I want to browse while waiting in line somewhere . I have no use for data to be running constantly in the background, when I don't need it, killing my battery.
[Nexus S General] kktk:
Well the reverse can also be true. Why should you have to do that in the first place? If you arent "using" the phone--why should 3g be draining your battery that much to begin with?

I think we(in the android world) keep making all these silly excuses and workarounds for a simple fact that use of battery in this platform just isnt that optimal.

I know its not an apples to apples comparison---but just from a data sync perspective---I have a BB that is on all day, syncs every god darn second, gets tons of emails from 6 emails accounts all day all night long. And that thing doesn't drain battery this fast because 3g is on! C'mon! Battery lasts for 3-4 days easy.

So--I'm sorry--but I just dont buy this excuse.

Battery life sucks in Android.
[Nexus S General] Braneless:
I've actually discovered here lately that 3g no longer kills my battery, since I'm running rooted aosp roms. I've always turned off the data connection on my evo when running Sense roms, but this week I've left 3g connected on my nexus s 4g while at work.

Nexus + data on results in no extra battery drain. Found this to be true with both rooted 2.3.7 and now rooted Ice Cream Sandwich. Turning off data was just an old habit I retained from my POS evo days.
[Nexus S General] evil_fish:
Hmm. I don't really know. I only know it's less than one hour per day.

I just charged my phone yesterday. But i am willing to do another test. But I am sure not very soon, after a few days maybe. Because of I am on going with moving.
[Nexus S General] jark99:
Nscollab & franco kernal. Stock voltages and cpu. Sat in airplane mode on night of oct 27 from 11 to 540 am. Been on since then.

Screen on time for 2 hrs and 46 mins.
[Nexus S General] derekwilkinson:
Battery life is all about the screen on time. Showing just the battery use screen doesn't give a good idea about actual usage.
[Nexus S General] Braneless:
How not, when the battery usage screen shows the percentage of power used by the display?
[Nexus S General] evil_fish:
Screen certainly takes most of the power. But that's not really a problem only with Android. It's with all smartphones. The issue with Android is, very often, with 3g on sync 2 or 3 accounts. It drains all the power in 10hours even without screen on at all. But with wifi, it's soooo much better. At least it's my case. The same experience applys with HTC TATTOO, Samsung galaxy s i9000, samsung galaxy tab 7" and Nexus S. I really like Android. However it really needs improvement.
[Nexus S General] apreichner:
Am I the only one that finds it interesting he burns his battery in 2 to 3 hours by playing 24 hours of video games?

But assuming I just misread the post I think the OP needs to invest in one of those solar power adapters or maybe even a small nuclear reactor if he is doing that much gaming. I think after 13 hours I myself would forget what color the grass was outside.
[Nexus S General] kktk:
Because it still doesnt tell us how long he actually used the phone for?

% is one thing. An absolute number on how long the screen was on is another.

I get 50% of screen time--but in actual use I only get 90 minutes.

Some others might get 50% screen time as well with over 180-210 minutes of use.
[Nexus S General] derekwilkinson:
Exactly. Percentage means nothing. It's all about the screen on time.
[Nexus S General] ronak47:
Mine seems to be good...

I'm using oxygen 2.3.1
[Nexus S General] kktk:
Details please....how long was the screen on?

How long was that Viber app running for?
[Nexus S General] method2madness:
Did you pay ANY attention at all to what was posted in the thread?

Or do you just like to randomly dive bomb threads with obscure and unhelpful information?
[Nexus S General] ronak47:
Ok I was going to let your post slide but scrap that!

FYI the OP mentioned he was having poor battery life and I responded by telling him that I am not and also noted the ROM I'm using.... I did this with the intention of providing some help and advice for the OP.

May I suggest you keep your pointless and to be frank irrelevant comments to yourself you PR!CK.

---------- Post added at 03:31 PM ---------- Previous post was at 03:28 PM ----------

Details are in the screenshot buddy.

I don't know how long viber was running for but I do know that my phone was on for over 12hours with fairly heavy use and had 65% battery remaining which is in my experience very good for the NS.
[Nexus S General] method2madness:
And may I suggest you take your own advice....PRICK. :)

If you have a problem with reading and comprehension, either don't post, or get someone educated to do it for you. ;)
[Nexus S General] 2ma:
In my case the battery time sucks too, but mostly because of the screen. You should also mention what screentype do you have, because as far as I know this device was sold with samoled and slcd. Mine has an slcd, and if the screen is on, the battery is gone! And I think there's no cure for that. Please correct me if I'm wrong :)
[Nexus S General] Heretic Infidel:
Very simple, a psp is a handheld made for gaming with a much larger battery. What you are holding is a phone....
[Nexus S General] BrianDigital:
The op is on to something odd my remote for my tv lasts alot longer than my nexus and its a smart remote btw
[Nexus S General] Kindatired:
My battery life had been pretty good since I got the phone. Two biggest drains for me are the screen and the music player.
[Nexus S General] AllGamer:
yup, that is normal, i get only 4 hours top from a full charge, when i'm on 3G a lot or on WiFi

just browsing website and modding forums
[Nexus S General] clearlyjunk:
I was surprised by it aswell when i got it the first time, but you get easily use to it.
[Nexus S General] plympton:
So I've tried everything... idle kills Android!

Let me set this up - I dumped AT&T for T-Mobile, and use my iPhone 4 unlocked on it. I hate how Apple has me by the nads, and want to give Android a shot.

I have gone through EVERY Android T-Mobile has, and they ALL drain an enormous amount JUST SITTING THERE IDLE! I just got a Nexus S (3G), stock Android, no apps set up, no background services on, no auto-sync, drains like 40% of the battery sitting there overnight.

Can anyone give me some settings / kernel combo / incantation to at least bring down the idle usage? I've tried other kernels, setcpu, juice defender ultimate (horrible experience). I haven't tried Tasker & Auto Airplane mode at night.

Am I wrong in thinking that it shouldn't be this hard?

My latest test is to try MIUI again, and I've got http://xdaforums.com/showthread.php?t=1287920 loaded, and just sitting there idle. It should have a Deep-Idle kernel, and I'm hoping for less idle drain.

Here's what Samsung says:

"What is the expected battery life for the Nexus S?

These are the details of the battery life of your Nexus S phone: Time: GSM 3G Talk Time: Up To 6.7HRs GSM 3G Standby Time: Up To 17.8 Days GSM 2G Talk Time: Up To 14HRs GSM 2G Standby Time: Up To 29.7 Days "

TELL ME how to get 17.8 days standby. PLEASE!!

-Dan

PS: I don't care about usage drain - use it, battery goes down. Check, got it. Idle, though....
[Nexus S General] method2madness:
The first thing you can do is change your wifi policy to never sleep. This makes quite a bit of difference. Second, if you're running a custom ROM, then I would highly suggest clearing battery stats in CWM, after a full charge.

It's kind of difficult to suggest much more, without knowing what ROM youre running, what kernel, widgets you're running, etc.

I can sit idle for 8+ hours and still be at 90%, so I'm quite sure it's something you're running or something like a setting. (In fact, I'm sitting at 83% after 9 hours and 32 minutes, with 7 minutes of phone time, 36 minutes of screen on time, 50 minutes of awake time and 9h 5minutes of wifi on time)

Post back with more info and I'll see if I can help.
[Nexus S General] plympton:
Thanks for the Tip - the Wifi sleep one seems quite opposite of what I would expect. I am currently running the 11/21/2011 MIUI build from KelLMSKing. When I installed, I cleared all caches, battery stats, etc.

With the Wifi policy to sleep when screen off, stock install (NO apps!):

1pm - 72%

2pm - 69%

3pm - 66% --> About 3%/hour. Better, not great, not good.

I set it to Wifi never sleep and retesting. I'll post the results in a few hours. :-)

Thanks for the tips. The NS is a really nice design, and can't wait to play with ICS on it!

-Dan
[Nexus S General] method2madness:
Yea. That's the same thing I thought as well, but I quickly learned why. Basically if your wifi is sleeping, your device has to instead use the much more power-hungry 3g or 4g network to do it's synching and updates. The difference in power is pretty staggering.

And believe it or not, when idle, wifi doesn't really use much power. I have mine set to never sleep and don't bother turning it off when I leave the house, and see no apparent drain. All wifi does when not connected is send out a periodic beacon, which uses very little power. But even when connected, it's less of a drain than cellular data. :)
[Nexus S General] plympton:
Hmm.. makes sense. Also makes sense that there might be more usage because I'm using a Prepaid SIM in there (with no balance), so it might be constantly trying over 3g, getting errors, etc. I wouldn't think it's pulling much (any?) with no extra apps installed yet, though.

What's funny is that other Android tech nerds I know tell me that Wifi + Android is a bit of a mess and... really drains the battery. (I'm a tech nerd, just can't consider myself an ANDROID tech nerd... yet. Getting close.)

3pm - 65%

4pm - 59% (oops - 2x battery drain with Wifi sleep to never?)

5:45pm - 48%

Then I turned Wifi back to Off when Screen off

5:45 - 47%

7:00 - 41%

-Dan
[Nexus S General] method2madness:
Odd. However, u can't really get a good reading until several hours. What do you have updating in the background? Just the google sync? Also, turn off picasa web album sync (unless you really need it). That eats battery life as well. No worries tho, One way or the other, we'll get you fixed up. :)
[Nexus S General] plympton:
Nothing (as far as I know) is updating in the background. I have no e-mail accounts configured, no twitter, no facebook (just this stock MIUI install, that is said to have great battery life).

I'm going to load CM7.1, and load a Deep-Idle kernel, no G-Apps.

Are there any Gotcha settings I should look for?

Any tweaks that could help things?

Why can't things like the GPS be on-demand and only kick in when requested?

Thanks for the tips, BTW!

-Dan
[Nexus S General] method2madness:
Deep idle is kind of hit-or-miss. On some peoples devices, it works great and on others it causes sleep of deaths. The one thing that seems to help universally is to set your minimum clockspeed to 200mhz (some even say 400mhz, YMMV). Also I dont recommend undervolting either when using Deep Idle. Again, some say it works fine with a minor undervolt, but I've found it's best to leave the voltages alone. TBH, I've found enhancements such as lower voltages and Deep Idle don't really make a huge difference. Again, everyone is different, so YMMV on that as well.

Now, it's interesting you mention the GPS. That may be your whole issue. Are you saying your GPS icon is on or flashing the whole time? GPS is definitely an "on demand" thing and isn't used unless an app calls for it. If yours is activated all the time, that's definitely an issue.

And no problem on the tips! :) I learned a metric ****-ton from the people here on XDA, and even though I'm not a dev or an Android pro, I still try try to share what I've learned thus far. ;)
[Nexus S General] plympton:
The GPS is .. available. There's no icon on the status bar. On iOS, you know it's being hit where the icon is there. I haven't noticed that icon on the status bar, but it's enabled in the settings ("use GPS satellites for location..." checkbox)

For kicks I loaded an ICS build while putting the kids to sleep - lost 10% in an hour, about what I supposed. ICS is pretty slick, though!

Anyway, on to CM7.1 - that's what I've used most in the past.
[Nexus S General] Mickosis:
Mine can last a day or a day and a half on normal usage. When I experiment on different roms it can last for like, 5 hours? LOL

Pure 2.3.7, only rooted. No customs / kernels whatsoever.
[Nexus S General] plympton:
<FacePalm()>

OK, I think I need to eat some crow and/or post this for posterity. I know the FAQ's say to wipe the battery stats, but it's not always clear about the full process.

When switching ROM's, you MUST MUST MUST do the battery recalibration task. It is not enough to just clear the battery stats, you must:

0. Phone should be plugged in at all times here!

1. Flash ROM

2. Charge to full (when lockscreen shows "Charged"), usually 95-96%

3. Reboot into recovery, clear the battery stats

4. Reboot, wait for things to settle out

5. Pull power and let the phone do its thing. (I assume that the task is done here, right?)

I've had the phone on the stock ROM with various settings on, idling, never dropping more than 1%/hour after doing this.

I'm currently on 2.3.6 stock, Wifi, 3G, GPS, all "enabled", also GladDOS 1.8 Kernel, Deep-Idle on. Auto-Sync is OFF.

... now to throw ICS on this bad boy and have some fun. :-)

Thanks for the tips/pointers - I'm hoping I'm good from here on out!
[Nexus S General] Braneless:
I don't do that full battery procedure as it's not really doing anything if the battery is more than a few days old.

I switch roms/kernels a LOT, and only wipe battery stats when I switch kernels. Flashing a new rom automatically clears battery stats by wiping system and data.

My ns4g averages 18+ hrs on a charge.
[Nexus S General] caranlor:
I found that the most noticeable improvement in battery life came from undervolting. Forget deep-idle and run something like 200 MHz - 1000 MHz or similar speeds (lazy CPU governor) and undervolt each speed by 25 or 50 mV (test to check stability).

This should improve things quite a bit, it definitely did on my Nexus S.
[Nexus S General] plympton:
How to eliminate GTALK_ASYNC_CONN wakelocks?

I put this in the Q&A section, but I think it's more technical than the Q&A usually gets, so I figure a tack-on here.

I have a Nexus S 3G, and installed bone-stock, and got it to idle for 3 days 19 hours, give or take. Once.

I wanted to try CyanogenMod, installed the latest stable (7.1), disabled Data Syncing, have a single GMail account, no apps installed and lose about 2-3% per hour battery life sitting still. I'm using the GladDOS 1.8 Kernel, which is what I used to get the 3 day idle before.

BetterBatteryStats shows that I have 11m23s of GTALK_ASYNC_CONN partial Wakelocks (this is over a 1 hour time period).

I used Titanium Backup to uninstall Google Talk, and still get the Wakelocks.

I'm going to re-install stock and re-verify stock idles fine.

Any ideas? I've searched high-and-low, and it appears it's a known issue, but I've yet to stir up an answer.

Anyone?

Thanks!

-Dan
[HD2 Android Q&A, Help & Troubleshooting and Genera] mammothboy2001:
Hi guys i need help i feel like a newb i have put several different version of android on a 16gb SD card that i purchased today. (lost the original) and i cant get any version to boot. It will say jumping to kernel and will not boot past the htc screen.

I got this HD2 as a replacement in the mail last week.

my am size is 576 megs and my radio is 2.15.50.14

Any ideas??? :mad::confused:
[HD2 Android Q&A, Help & Troubleshooting and Genera] DinoRapter:
You might want to reformat the SD to a FAT format. That format will work the best with Android on the HD2.
[HD2 Android Q&A, Help & Troubleshooting and Genera] stex_80:
with fat intend fat32 ?
[HD2 Android Q&A, Help & Troubleshooting and Genera] trickstyle009:
Hi,I have the exact same problem,I'm using the same radio as u.I use energy rom the latest one I think the problem is cause by the rom. with magldr android works fine.btw u need the sd to be formated to fat32. I say try to install a different rom it might help, i'm gonna try that out too.
[HD2 Android Q&A, Help & Troubleshooting and Genera] stex_80:
i had tried 2 rom and the result is the same, i had format sd card but haret doesn't work
[HD2 Android Q&A, Help & Troubleshooting and Genera] trickstyle009:
Did u try to flash to magldr 1.13 and then flash a nand android?

after all u want the android more than winmo 6.5 ,no?

I'm checking out now artemis rom with android soon will see how it works.:rolleyes:
[HD2 Android Q&A, Help & Troubleshooting and Genera] stex_80:
at the moment i don't want install android on nand, i want try android from sd with haret.

Before the hspl procedure, with the original rom all working good, now, with hspl 2.08 and custom rom no.
[HD2 Android Q&A, Help & Troubleshooting and Genera] trickstyle009:
some one else posted the same question.and they found an answer m8.

say thx to this guy if works - h.nocturna

so if u unrar an android build copy all of it and don't rename it to android or copy just the android folder.

and try to format it to FAT32 and 8kb clusters before.

I'm testing this out now,hope it works.
[HD2 Android Q&A, Help & Troubleshooting and Genera] stex_80:
eureka !!!

i've update the radio with one up then 2.08,..... and now my leo is in android booting.

try it
[HD2 Android Q&A, Help & Troubleshooting and Genera] trickstyle009:
what radio version your using?

still not working for me.. even from magldr sd...
[HD2 Android Q&A, Help & Troubleshooting and Genera] stex_80:
2.10.50.08-2
[HD2 Android Q&A, Help & Troubleshooting and Genera] trickstyle009:
ok thx ,I flashed the latest radio again,and android nand works and boot ad sd works too. so if it still won't work booting android from winmo I will downgrade my radio version seems like it works.
[myTouch 4G Q&A, Help & Troubleshooting] gordonzhao:
I was able to root my MT4G with ease using VisionARY r14. My friend purchased a MT4G shortly after and I was trying to root it for him, I used several methods and no luck on any of them.

I've tried using:

1. Visionary temp root>attempt perm root

2. Visionary temp root>terminal (sh root.sh)

3. Visionary temp root>terminal (/data/local/wpx.ko)

From what I understand #2 & #3 basically are the same. So going back to the problem, on MY phone (I don't recall if I used #1 or #2), I rooted with no issues. On his phone, the root is not sticking, every time I go into the bootloader on his S=on still. Nothing stands out or is out of the ordinary, and I would think it would have rooted just fine, the scripts ran via terminal emu and looked okay and all.

Something else I've noticed is when I install CWM Recovery via ROM Manager, after temp root from Visionary the install of CWM Recovery itself was fine, though after going into bootloader and trying to access recovery or booting into recovery from ROM Manager, it doesn't go into recovery, I get the cell with red triangle and "!" on it. I'm assuming that this is a result of it being unrooted still? Anyone else run into a stubborn MT4G like this? I've attached 2 pictures for visual aid of the phone's bootloader screen and about screen below.

Any suggestions or help is greatly appreciated, I've been trying to root it for over a week now and no luck.
[myTouch 4G Q&A, Help & Troubleshooting] powduh09:
I can't see the pics you posted, but I had this issue myself, for me the answer was to find a stock recovery pre ota update and force it, then I ran visionary and terminal with sh root.sh or whatever... Hope this helps... Just try to find an image of pre ota stock rom and go from there... There is a good forum here with a walkthrough to do this... Post results please, would like to know if this was your issue...
[myTouch 4G Q&A, Help & Troubleshooting] ZuluNexus:
Hey I ran into the same problem, with that 86.0000 boatloader u must use the gfree chmod777 process its because its after the ota update
[myTouch 4G Q&A, Help & Troubleshooting] ziggy34:
I second this, gfree works great
[myTouch 4G Q&A, Help & Troubleshooting] powduh09:
This would explain why I had to flash the pre ota stock image before I could root using the sh root.sh.... I am sure the chmod777 would have worked also...

Sent from rooted Royal Glacier using XDA app
[myTouch 4G Q&A, Help & Troubleshooting] gordonzhao:
I see. So just get a pre ota stock rom and Visionary would be the simplest way then? But would the pre ota stock ROM also include the < 86.0000 botloader?

Thumbs up

Which method did you use to flash the pre ota image?

And thanks everyone for the quick replies!
[myTouch 4G Q&A, Help & Troubleshooting] powduh09:
When I flahed pre ota I found the forum on here for it. Just placed the file on my sd card and named it PD15IMG and booted phone to hboot, it found update and went from there

Sent from rooted Royal Glacier using XDA app