yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Frogacuda:
The phone in the first picture had been rebooted after coming off the charger. And the one in the second picture had not. I do think a big part of the problem is it not sleeping correctly, but the solution is not rebooting the phone. There's something more to this.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Jrockttu:
If you read the links I posted on the previous page, you'll see the problem. It's a wake lock caused by your charger. It occurs regardless of os, kernel, radio, etc.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] digitalnights:
I actually sent my phone into Samsung and they found some stuff soldered improperly... So yeah...

I got 32 hours on my extended battery, 19 on my regular battery.

Seems like there's something physical too...
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Jrockttu:
Here's more information on the Charger problem and how to test yours and find one that works:

http://xdaforums.com/showthread.php?t=1759541
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] hudson2508:
Battery life with CM9 has been pretty awesome, especially on the latest nightly with Instigator's Badass kernel. Max clock set at 1188 and min at 182. On WIFI a lot which helps but with almost 3 hours of screen time I'm happy.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ossito2012:
+1
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] droidfoshizzle:
my battery wasn't so good. then I bought a brand new oem battery and now I'm getting 13 hours with 2 hour reading my Kindle and another 2 hour reading flip board, fb, xda, and news.

i did check my cpu spy and it is going into deep sleep, and I'm using my Asus transformer primers charger.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] netomel:
I dont know how u get 13 hrs o so

I get 6 hrs of heavy use. I have 2 oem batteries and an extended
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] droidfoshizzle:
I have 2 hour commute each way from work via train and shuttle everyday. As soon as I leave home I'm on it reading my news. I read on my Kindle app during the entire train ride. only time it goes to sleep is when I'm boarding something or crossing jwalking which is at the most a minute. However when I get to work, I'm hardly on it and back on it after I leave work during my long commute. so I leave home 630am and get home 730pm. By the time I get home I get roughly 5 to 10 percent. I am also on a custom rom.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] fullboogie:
Stock, I barely got a work day out of my phone with very little use. After rooting and using TiB to remove all the bloatware, I'm getting two work days out of mine now. All the ATT trash really kills battery life.

By the way, I've been keeping track of things for 3 days with CPU Spy, and it goes into deep sleep on command, every time. Right now I can't think of any reason, for my purposes, to do anything other than stock root.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Drahkarg:
Alright, time for some more accurate numbers for today. Keep in mind my phone is rooted, and I have LTE disabled because I'm not on an LTE plan. I've heard that LTE can have detrimental effects on battery life.

16% - Discharging

14h 38m 42s on battery

About 4 hrs and 48 min left

Screen-38%

Winamp-13%

Mediaserver-11%

Facebook-10%

Cell Standby-6%

Chrome-6%

Android system-5%

Android OS-5%

Google Play Store-3%

Phone Idle-2%

So all the numbers are right there, and while I am too lazy to add everything up I'm pretty sure 100% is accounted for. Only 10% of battery power is being used by the system and operating system, which is impressively low. I've also never been able to get nearly 15 hours of uptime out of a phone before(Over 18 hours projected). The screen is using quiet a bit, with with a Super AMOLED Plus screen I'm not overly surprised.

Running stock Rogers distro 4.0.4, with Clockwork Recovery mod.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Weazmeister:
I am running CM9 0716 nightly, with InstigatorX' 5.1 kernel

22% Discharging

Here's a screenie from earlier:

1d 2hrs

about 6 hours left

http://xdaforums.com/showthread.php?t=1721235
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] netarc:
I can not get over how huuuge a difference rooting my SG2 Skyrocket has made to its battery life; b4 (with 2.3.x) I'd be lucky to get 10 hrs before the phone died; now with ICS post-root, I saw 10 hrs in battery meter, and battery is still at 40%!

Prior to rooting, the phone typically ran 22-25 processes in the background, much of that AT&T crapware which I couldn't kill. Had been meaning to root the phone since first getting it, but never had a compelling need, even with the poor battery life. Then when I applied the official Android 4 upgrade, battery life went all to hell...we are talking 6-8 hours TOPS. Pathetic, and all completely blamable on AT&T. Add to this the suddenly laggy response and frequent lockups, and I was sol.

Short, if nervous, rooting session later - and after freezing approx 20 processes - and I now have a fast, long lived phone.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Weazmeister:
The ICS OTA is what finally convinced my wife to join my "evil ways" and root/rom her phone. I have both on CM9 7.17 with 5.2 InstigatorX kernel. Just been may happier. Actually went a full day, over 24 hrs, with light usage, without having to recharge my phone.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] clippy83:
i get pretty good battery life on mine
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] xcrazydx:
cool story. no screenshots or tips
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ism_can:
I usually get around 24hrs with relatively light usage (checking emails, weather, updating apps from PS - about 1-2 hrs of screen time) when I'm using the data plan for haft of that time. But last weekend I stayed mostly at home, on WiFi and I got the best battery life ever.... 2d 9h. :cool:

I'm also using Llama profile to turn off wifi/data network/auto sync over night (10:30pm - 7am) since I don't need to update stuff during that time. It automatically turns back on in the morning...

I'm running Seanz's Sky ICS 4.2F-7B (Rogers version, Modded UXCLF3 kernel, Rogers radio) and loving it.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] withoutd0ubt:
I routinely get 48 hours on skyics 4.2f. I use my phone intensively. Modded uclf6 kernel and uclf6 radio. All useless junk removed (live wallpapers, etc). Average 240 ram. Its so nice.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ganja_guru:
Good battery life with Stock 4.0.4

I'm running the Stock 4.0.4 updated through Kies and the only addon I've installed is the 15-toggle mod by mohan_kr. I'm using the Qcell 3850 mAh battery and get about 22-24 hours with moderate use. On the weekend, I get more. I feel the battery life has been improving significantly since I got it, currently at 80% after 9h 22m of usage. Today has been very very light usage though.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] haloeight:
Edit: Sorry, meant to post this in the BetterBatteryStats thread.

What does "No reference since unplugged set yet" mean under Kernel Wakelocks?

I set my phone to configure via static IP and turned off DHCP broadcasting in my router as I was finding the wlan_rx_wake to be causing kernel wakelocks. Now there is nothing showing up under Kernel Wakelocks so am not sure if they've been eliminated entirely or BBS is not able to find anything for some other reason.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] zoofoo:
How are you averaging 240...I just cleared mine and it was 610...usually not that high ...but quite often in the 550 range
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] knawraz:
I had to buy another battery just so I can get through a day...
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Wickidmasshole:
I have 3 batteries on me at all time. I feel your pain.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] netomel:
Guys I was in your same situation I bought three batteries and now I am on sky ics on a stock base and am getting more than 20hrs per charge which I found unbelievable when people was saying that but its true.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] digitalnights:
Well I found a problem with it....

Apparently there's a soldering issue with the actual hardware... So I sent it in to Samsung and they resoldered some parts in the phone (Don't ask what exactly) but it cleared up the battery issue....

I was running an extended battery from eBay and after the fix, It was lasting like 3 days. Might be worth sending it in under warranty...
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Jrockttu:
Read the battery thread in my Sig (it's also sticky now). If you're getting a wake lock because of the chargers you're using, it could be wrecking your battery life.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] RAVEN6:
Here are my battery stats. I consider myself a low user. I was able to squeeze over 22 hours. A typical daily use consists of phone calls text, browsing, and gmail. This particular day included 34 minutes of gps with Endomondo and music going all at the same time. Total time includes 4 hours of sleep on airplane mode.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] garydv2002:
@Raven6 what rom are you using custom or stock? Gingerbread or ICS? Have you made any tweaks or purchased a bigger battery?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] RAVEN6:
I'm using SKY ICS modded uclf5 kernel and uclf 5 radio on speed dragon base. Using stock battery. I have removed some apk from the system that i didn't need such as accuweather and both emails. currently i unplug my phone at 0530 and charge it at night around 2300 with still a lot to spare.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Nick_12:
Its alright.

Mines on Straight Talk so I don't get 4g. In a norm day theres the bluetooth streaming of local music to my car stereo for about and hr. When I'm not near my car I keep my bluetooth on. GPS always on. Wifi when at home and 3g when other wise. I get about 6 to 10 hrs. Not amazing like my old iPhone 4 lol but well worth the bigger screen and faster everything lol. Oh ya I'm running CM9 RC2 with stock kernel and Governor set to CONSERVATIVE.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] muratozdemir:
:/

I don't understand why my phone is awake???

My friend's one x only awake when screen is on
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ctalcant:
Superlite JB by Vincom. GPS/WIFI/LTE always on.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Jrockttu:
I figured out why my battery life is so horrible some days. I had REALLY good battery life on Saturday, about 17 hours that included lot of PvZ and Cut the Rope and I still had about 20% left when I plugged it in that night.

Part of it is that I was on Wifi all day Saturday, as there is a substantial difference when I'm running on LTE.

Today I unplugged at 6:10am, ran 20 minutes of TuneIn radio (on wifi), then 10 minutes of Pandora and 5 minutes of Google Music Beta both on LTE. Not much else while I'm at work but I was below 30% by noon.

I upgraded BetterBatteryStats and checked the thread on XDA and notice that I'm getting a kernel wakelock from "kgsl-sd1". So far today it's at 2 h 32 m 58 s Count:59754 57%. The BetterBatteryStats thread states that this is the GPU. I didn't notice a wakelock on Saturday, so I can only conclude that this is the difference between excellent battery life and terrible battery life.

I'm recharging right now, then I'll see if the wakelock continues. I'll restart the phone and see if the wakelock stops. I'd like to figure out what triggers the kgsl-sd1 process.

Maybe one of you smart people on XDA can tell me how to stop this process from waking up my phone? Thanks!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] dcdivenut:
Put me in the horrible battery life camp.

As in, I can almost watch the batter % count down.

Was not great on stock, rooting has not changed it.

I am about to uninstall all but the basics and see if that fixes but I am not happy. I just want it to last through a work day. I took it off the charger at 730AM, and at 5PM hit 25%, without answering a single call!

I do have push email on Touchdown and Gmail, but I have sync to FB turned off, along with everything else I can think of.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Scythe024:
Moderate use + Juice defender, went on 30hrs
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] dcdivenut:
Couple of questions

1. People that are getting good battery life by turning on wifi... Would I be correct to guess that the wifi replaces the LTE for data?

2. how do you figure out which processes are pulling battery? I am downloading juice defender now, and am hoping I can avoid pulling off all apps to isolate what is causing this.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] mnbullldog:
Add me to the list of bad battery. Cannot for life of me figure out what is draining it so bad.

Tried the Power Saver, trying Juice Defender ...

Not getting anywhere near thru a day.

I do have to use an Exchange Server for work email and this push ... along with Contacts and Calendar - is that a problem on Android?

Is my first Android and can't believe how horrible the battery is. Know it has to be something odd. No way can it be this bad.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
Do not blame LTE. I have very much the same problem in a non-LTE area. I get about 5 hours on a complete charge. This is really unacceptable for a very moderate use. If this does not improve, I would just have to return the phone and opt for something else.

However, I think that much of the problem resides with the OS. It is poorly matched to the device, running just too many services for the capacity of the hardware to maintain them with an acceptable battery life.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Zlatty:
I'm having fantastic results with 4g constantly on. I'll drain my battery out and see how it racks up.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ashishsmith:
Samsun Galaxy S2 Skyrocket - Battery Issues :(

I switched from iphone 3Gs to Skyrocket Android Ginger Bread (Hoping ICS will come soon).

I bought this new phone on Thursday (Nov 10) and wanted to love because I love the design and sleekness.

THE BATTERY SUCKSSSSS...... :((

I have tried so many different stuff, I am not able to get a good battery life. I don't expect it to work more than 8 hours because I sync all my emails (around 5 accounts) facebook, twitter, google+ through the phone. I do texting a lot as well through out the day and hear music while commute. I also like to play games during my commute.

I don't mind charging my phone once in the night and once during the day in the office.

However, first off all by the time I make into the office, I have 30% battery left so I have to hook it up to the charger.

And during the day the battery just doesn't charge.

I have hooked up my phone since 11 am in the morning to the charger when it had 3% battery left. In the meantime, I have made couple of calls, have done couple of texting and checked the emails. currently my charge shows at 7% and the phone is really "Heated" up.

My Old 3Gs, I have it one since last Thursday on Wifi and it still has 30% battery left. Skyrocket drains battery and doesn't charge up, I don't understand what am I doing wrong.

I have tried couple of Batter Saver and Juice Defender Apps, they didn't help and stopped the syncing of the emails and stuff which I hate, because I almost need all of my emails quickly.

Please let me know if there is something, I need to do different.

Thank you.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] hinduboy74:
I've had the phone for a couple of days and i'm sitting at 100% at 7:00am.

Wifi off

bluetooth off

juice defender

gmail push

minimal widgets and background processing

screen bright @ 30%

15 sec time out

No LTE access but HSPA whereever i am

Using internet here and there , sending text messages, checking rss feeds, netflix for 30 minutes and i'm looking at 30 percent by 12:00pm.

I feel like thats pretty bad, idk if its just a hit or miss when it comes to certain people having issues.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ashishsmith:
does any one's phone gets really heat up? whenever I plug into charge the phone up, it really gets heated up.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] xiLLeNtz:
Can I ask what are some of the settings you use?

Correct. But you make it sound as though his question about using wi-fi to replace LTE is dismissible. It really isn't. It always helps when you're able to connect to wifi because it will stop your phone from trying to find the optimal connection to move your data. You just have to turn your wifi off once you've moved away from the connection or else your battery will drain while trying to find a wifi signal to connect to.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] marcusone:
Couple of days is good... but I bet your phone say 100% because the indicator is "stuck" as per the issues some of us have been seeing and talking about in this thread... reboot your phone and see if it says at 100%

Beside the indicator issue; battery life seems to be fairly good. I can use my phone moderatly (a couple phone calls, bunch of texts and emails) for 10-12 hours.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] hinduboy74:
I meant to say that i've had the phone for a couple of days testing it and i start the morning at 100% at 7am and quickly drain to 30% at 12pm. Its not stuck at 100%.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] thistransition:
I have had this phone for a little less than a week, and I have had terrible battery life. I went to bed last night with my phone fully charged and killed all my apps, woke up, and my battery level was in the 70's. I think a big part of this is the phone's LTE radio (im sure this has been discussed). I live right outside Baltimore and my battery seemed to drain faster while using LTE.

In any case, I'm going to return my Skyrocket and get an HTC Titan when it comes out on the 20th... a bit off topic but I have also had problems loading webpages with the Skyrocket even though I'm clearly in 4G territory (seems like the phone can't figure out whether to use HSPA+ or LTE).
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] natexy:
Battery stays at 100%

Yes, the problem stays even after you root. The problem even persist after a custom ROM (Melvin's ADT & Skystocketeer) and CWM resets, however, I noticed it to be less prominent than the stock ROM. This leads me to think that it might be the battery itself reporting it wrong to the phone or the link between the two. OR I could have a dud battery and should buy a new one. But for now, I kind of just gotten used to it and not trust my battery indicator at all, I just know that by the end of the day, I'm down to ~20%.;)
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] marcusone:
Humm... well I have a backup battery coming from Samsung, so I'll see if the problem persists with the new battery when I get it.

Really this only happens when you don't remove the charge cable promptly with reaching 100% charge (so no over night charging = no issue with indicator). :(
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
I had a number of problems with the Skyrocket but most appear solved ...in a way. Yesterday, utilizing Juice Defender, and with moderate use, the phone fully lasted charged until the next morning (about 24 hours). It seems not to lose charge when it sits idle, and this is good. I have a number of email accounts and I check them often. I did use the camera briefly. So, it appears that with Juice Defender and with moderate use, the phone can last through the day without much of a problem.

When I originally bought the Skyrocket, the battery appeared stuck to 100% until one rebooted the phone. This was caused definitively by a faulty battery. When the battery was replaced, the problem did not recur. Since Samsung has decided to include NFC in the battery, these batteries now have lots of firmware and they are more prone to failure.

Moving to the Titan would be, of course, a move to a different OS. It is a possibility, nobody is necessarily wedded to Android. However, these large phones may have issues with batteries and heavy utilization may drain the battery of every phone out there. My suggestion is to pick the OS that one would like to stick with (because of the investment in apps) and then select the proper phone.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] marcusone:
Anyone have dealings with Samsung to replace their battery? or do I have to fight with my carrier to try to get a new battery?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] natexy:
Battery indicator stays at 100%

Wow, I never though to that, but will definitely keep in mind. And keep us posted with the new battery? Still a bummer that you can't leave it in over night, don't really want to baby sit my phone now. +1 iPhone? :p
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
The phone is fairly new. Since you have 30 days to return it, I suggest that you march into the shop where you bought it from and get a new phone or a new battery. I did just that. I walked in, I showed the problem and I walked away with a new battery that does not have the problem of the original one. So, it is really up to you.

Now, an update from me. With Juice Defender Ultimate and without any weather gadgets, with moderate use (phone calls, some video, checking email, some internet browsing) the phone is fully usable for almost 24 hours (until the next day).

The new battery is amazing. I was fully charged in less than a couple of hours, which is good. Having a spare would help, having a extended battery would help more!!!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] bidyut:
I just replaced mine with AT&T directly since it was under 30 days. They did a little song and dance and sent me to their Device Support Center, but they are not ready for any S2's yet, so if they do the same to you have them call the DSC first and then follow through.

Depending on who you deal with you might get a new phone or a new battery to try out.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] garyd9:
Purchased the phone yesterday. I have one single email account, an exchange server, that is set to 'push.' For most phones, the "push" configuration actually uses less battery than actively polling every 15 or 30 minutes. Anyway, I nearly drained the thing playing with it, and charged it up last night. This morning, I took it off the charger (100% charge), put it in my jacket pocket and came in to work. (the screen was locked, and nothing pressing the buttons.)

By the time I got to work (an hour later), the phone is actually warm (almost hot) to touch and the battery level is at 77%.

Running applications are 0 (according to samsung's own "active applications.") Battery usage breakdown (according to the OS) is: Display: 38% (not likely), email 17%, android OS 16%, cell standby 15%, phone idle 8% (and so on.)

One thing I had noticed yesterday was that sometimes the built in "email" application would use strange amounts of CPU power (according to Samsung's Active Applications app) when supposedly idle. Therefore, I've been very careful to backout (and exit) that application. However, I'm not sure it matters much...

To use nearly 1/4 of the battery in just over 1 hour when not actively doing something is extremely bad. That implies that my battery will be dead in about 3 hours.

This phone should have a 7 hour "talk time", so I expect much, much more "idle" time then what I'm getting...

My only question becomes: Do I bring it to AT&T and ask for another skyrocket to replace this one, or just switch to an entirely different phone? (SGII?)
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] bidyut:
I just gave up and went to S2.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Da_G:
Give my 0.3-pre2 kernel a shot. Idle speed is reduced to 54mhz with a decent under-volt, also enabled a deeper sleep state. People are reporting better battery life than stock kernel even with an overclock :)
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] garyd9:
What is the idle speed/voltage at stock? Is there any way to use that without overclocking?

Thanks

Gary