yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] nizmoz:
For your phone that is good actually. But still poor. 4 hours and lost 20%? Not good. My iphone 4 is at 73% right now after 3 phone calls of around 15 minutes, bluetooth, gps on. Emails for my gmail, and exchange being received with push, and downloading a few apps and doing a speed test, facebook and browsing a little. Also been unplugged since 7:30am. It is now 12 hours later and only 73% left. :) I be down to 10% by now with my Skyrocket if I didn't charge it.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Meilannu:
Not sure i follow that. Even before i added the PoweSkin i used mine from 7:00am to 11:00pm all last week and was not near 10% at the end of the day.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] appdroid:
To save battery use following ROM!

BeastMOD by Melvin! Enough said!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] yaiiyaii:
I've noticed that many people are having battery issues. I myself was having an issues, my battery was discharging too quickly. I get about 1 hour for every 10% without even using my phone. i'm not sure what I did but I believe I have fix the issue. I formated everything through clock work recovery/mounts and storage. Then I flashed stocked though Odin. And then used regular recovery to do factory reset. That fixed the issue for me.

Its been 11 hours and I have 40% left.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] yaiiyaii:
see my attachment for picture
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] nick34609:
Battery life seems great to me. Not rooted yet.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] GalaxySkyrocket500:
Batt life is awesome.. 20 hours and 40% left.. BOOM
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Lucidmike:
You should also get one of these.

http://www.samsung.com/us/mobile/cell-phones-accessories/ET-CGPK004GSTA

You can get one from amazon for about $45 shipped. It comes with a spare battery. It says for t-mobile but it is the exact same battery/charger for the Skyrocket. You can find that info on the samsung website somewhere.

Without it, charging your phone through a USB connected to a computer when the device is on is not going to do a good charge on your phone. Charging through the AC while the phone is on will never top off the battery either. You can however turn off the phone, and charge it on the AC, but who wants to do this?

Instead get an external charger, and leave the spare battery connected to the AC. Swap out when you're running close to emtpy. This way, you are always doing a deep cycle charge. This will maximize the battery life, and the life of the battery.

Also, I've used OS Monitor to see what apps like to steal juice every few seconds. Then I used SystemApp Remover to get rid of those after verifying the bloatware serves no purpose.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Meilannu:
This is what i use.

PowerSkin
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Jooosty:
this is my phone sitting overnight.

It used to be around 60% when I woke up. Running a new rom and underclocking the system when I slept only cost me 8 % in 7 hours.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jedah:
I'm not sure what I did, but battery life has improved dramatically over the last week or so for me (prob my 3rd or 4th week of ownership now). W/ moderate use, it's usually around 40-50% when I go to sleep.

Last night, I unplugged at around 1:30am, and woke up around 8am w/ 93% left. I am, however, on Wifi when I'm at home. I'm sure that helps alot.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Parallax2430:
I just got the Skyrocket last Thursday. The battery life was good the next day, however its been going downhill quickly. Today i worked 8 hours with checking my phone every so often to check the time, text. I made a few calls and within 8 hours the phone was at 15 percent. Wifi off. I just installed Juice Defendor so well see what this does. Ive never used it before. Any words of wisdom?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Nakel:
My Skyrocket gets great bttery life. As long as I leave it plugged in most of the day, or carry an extra battery, I can get through the whole day! :rolleyes: I can even use it a little bit too! :D
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] abteer:
The battery life on this is terrible compared to the Tmobile SGS2. This one seems to drain about 25% quicker.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] evocalante:
I get a full day battery easily with moderate use. I use jdf and use setcpu profile for screen off at 54 and works like a charm. I came from an evo so this is waaaaay better.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] GalaxySkyrocket500:
Going on 28+ hours.. 30% left.. stock ROM rooted and debloated with JD.. use set cpu to 54 min with screen off.. idle 7 hours 5% loss. BOOM.

Text, calls and light use....

This is the best phone I have ever had.. :D
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] orlandoxpolice:
I use my phone constantly. I get about 9 hrs with over 2.5 hrs screen on. I'm very happy. I can go 9-5 with heavy usage and no charge.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] john94si:
Yes i did.. but i just got a replacement phone from amazon within my 30 days and only swapped the battery and now i get 11 hrs of use..

i am happy now..the origional battery must of been bad.. thanks amazon
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] CXENTE:
I get good battery on my skyrocket :-)
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] scoobysnacks:
the battery life is on par with the incredible s I had before this, and much better than the xperia x10 I had...

Considering the screen size and processor speed, that is antastic imo
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ohhneill:
Juice Defender Ultimate and SetCPU has increased my battery life by almost 50%. Just my 2¢
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] GalaxySkyrocket500:
Amen to that brother... mine too!!!!:eek:
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] juude90:
My battery life was crap but with a bit of tweaking I must say I am impressed.

Lasts about 20 hours with moderate usage ( Gaming, video stream, text, call )

Running on TPC v3 and its impressive.

Just on a sidenote : I have my data off most of the times except for the times I need them. I'm sure this saves quite a bit of juice. Anyone else do the same thing? :)
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] GalaxySkyrocket500:
When I have the screen off.. have setcpu at 54 min at idle...... I do turn phone off at night, but its on 12 hours or so.. but I just use the airplane mode.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] juude90:
What does the airplane mode exactly do? I'm still kinda iffy about this LOL.

Also the minimum cpu is 192mhz for mine, but whenever my screen is off it goes to Deep Sleep. I'm assuming this saves even more juice. :)
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] GalaxySkyrocket500:
Airplane mode stops all data.. everything....

Yes having the low setting on the cpu will save battery and it will sleep like a baby... Use "Cpu Spy" to monitor it. its free from the market.:D
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] twiggy114:
all good on my end.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ruebarb:
Same here.

I was completely amazed at how well Juice Defender ultimate works, I was skeptical, figured it was hype, simply amazing.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Mortem Tuam:
anyone have any tips on how to use Juice Defender properly? I have Juice Defender Ultimate but it always was turning off my LTE/HPSA and when I turned the phone on to check xda or Google Plus it never wanted to connect me. It was frustrating so I turned it off.

I'd like to know how to use this app properly so I can still use my phone the way I always do. It's just not acceptable that the app kills my connectivity and I can't reconnect when I want.

And in case you want to know, I set it at Balanced.

Any suggestions are appreciated.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Synner12:
This may or may not help some of you guys. I noticed this problem on the original GSII and I'm seeing the same thing on the Skyrocket. My phone will not automatically connect to my wireless network at the office unless I "wake it up" (slide the slider to display the home screen). Until I do that, it sees a wireless network, tries to connect to it, but apparently can't. I have no idea why it can't connect (or why it will connect simply by waking it up), but it will keep trying and it absolutely kills battery life. Worse, if I do wake up the phone so it connects, and then leave wi-fi range, the problem comes back. I have to wake it up every time I enter our wifi covered areas. Luckily most of our facility is covered, but it's still a huge problem.

Oddly I do not see this problem on my home network. At the office the wireless is WPA2 with EAP, at home it's WPA.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ruebarb:
Use the custom mode, it has many many options. Read all the info and select the features you want.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Mortem Tuam:
I will have to check it out again. I thought I tried custom mode but maybe I didn't :cool: thanks
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] acles003:
What Kernel are you using?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] twiggy114:
What ever the QuickWiz ROM has.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] guygreller:
Don't use Juice defender or any of the application such task manager. These apps doing all but helping battery life!

close apps with your back button is much helpful to your battery life.

Also consider using other roms such this one

http://xdaforums.com/showthread.php?t=1377087
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Mortem Tuam:
I used to subscribe to this ideal, never use apps such as juice defender but I think things have changed a lot since those days. My battery on the skyrocket is finally settling in and was getting 16+ hours in a day with it (which is acceptable to me) so I decided to try Juice Defender and I was surprised that my battery is now well into the 17+ and probably can get 20+ hours.

Never hurts to try something, if it doesn't work then you stop......and I am no noob at this, been flashing ROMs for a long time and am also a Theme Dev.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] the2rrell:
I still agree with this......i use watchdog to watch watch whats running and simply kill the ones that are working to much that im not using.

a lil more work than just letting an app do it for you, but this helps with my battery alot. i easily get 20+ hours out of my phone this way.

but really i try and never let it drop below 40% unless im cycling the batt or doing some testing.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Mortem Tuam:
I guess my point is no one should tell people NOT to use juice defender. If you say I have used juice defender and it was more of a problem than a help, then OK. But I've been at this awhile now and never used it before now and it does work very well for me.

So like I said, try it out results may vary. But don't mis inform people because you don't like it.

Sent from my SGS2 SkyRocket powered by Mortem Tuam.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] the2rrell:
I AGREE, i wont even recommend Roms and Kernels......im a big fan of the experiance. it will ALL very from user to user.

i would try out Juice defender but i dont want to pay for it right now.......:p
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] gravi2:
@approid saavn .... nice Hindi or Tamil songs?

I am able to get 37+ hours with

0) stock rom 2.3.5 rooted

1) JD ultimate with custom settings

2) bloat freezer

I will still like to.optimize the cell standby and phone idle timings. Any suggestions?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Riot147:
I'm using the powerskin extended battery case and I barely make it a day...

But man this phone is beautiful haha
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] appdroid:
Hindi man love that app so much.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] CEOGUY:
Battery was great one month ago now its draining 40% in less then 2 hours.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] dvandam:
I wanted to try and download Juice Defender and it says that "This item isn't available by your carrier." Really? Any way around this? Any "legitimate" places I can go so I can download the apk and sideload this? I'm on AT&T not Rogers.

EDIT. Nevermind.. got it on Amazon App Store. I'm dumb. ;p
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jakem90:
My battery sucks, running latest skyicecream with custom juice defender, this is my first day with this rom and I will try to calibrate tonight.

Sent from my Rogers Samsung i727r!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] GalaxySkyrocket500:
I love it... going on 1day 14hours and 25 with 35% battery left.... :cool::cool:
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] rosendo192000:
So what do you think it is a faulty battery or the phone its self. I just came from a iphone4 and I couldn't compliance about the battery. I just got my skyrocket on Thursday and rooted yesterday. I froze a lot of bloatware and still getting crappy juice out of the battery. Woke up last night at 4am ,unplugged my phone from the charger wentback to sleep and woke up at 8am with 94%....WTF really. Thinking about keeping the phone for one more week and see how it does but I might just go with the iPhone again if I can't resolve anything.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] InstigatorX:
For those having battery life issues I suggest you try adjusting wifi time out values according to this post.

http://xdaforums.com/showpost.php?p=20735449&postcount=397

Worked perfectly for me and extends battery life dramatically.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] rosendo192000:
Yea it really getting closer to returning this back .iphone4s gets more juice then this. IV tried everything. And still same resualt. Froze boaltware is the same if I didn't froze it. Come on 4 hours and 30% drained on mostly stand by. Do u guys think its a fault device or battery?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] XAviierG:
Get cm7
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] 00mred00:
No complaints here
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] rawb123456:
Something isn't right....android system shouldn't be ahead of display when 30% is used in 4 hours....maybe device/ battery. Or Rom. I would get a exchange if possible and start over....or be lazy and flash a couple Roms. I suggest PirateGhost and stockish kernel. You need to change something either way.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] renegadefunk:
I lose no battery at all in 8 hours of standby...

I did have an issue when I tried da_g's kernels where it was draining like crazy, back to stock rogers one and the battery is the best of any of the smartphones I've owned
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] rosendo192000:
Thanks rawb, I was thinking the samething. Iv tried everything, hard reboot, factory reset, rooted to freeze bloatware, and nothing. Now just today I recalibrate the battery with market app and froze "factory test" . That seemed to help a Lil bit. Wont see till later when I wake-up tomorrow morning. If not I'm gonna try to unrooted it and exchange it.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] rosendo192000:
Which brings me to my next question. Lets say I end up returning the phone for an exchange. ( after doing a factory restore and defrosting all the bloatware) Will they know I'm rooted? And will they exchange it? I don't even have 7 days with phone.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] blackraven1425:
Juicedefender boosted me to double the battery life.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] silver03wrx:
No just go here follow these instructions to odin the stock tar http://xdaforums.com/showthread.php?t=1342348
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Midiman57:
I've been doing some testing on various charging methods (differing AC wall blocks and cables) trying to figure out the "100% battery stuck" issue, so I've been keeping a fairly sharp eye on battery usage. Yesterday, I barely used the phone all day. I played with the camera for about 10 minutes to check an issue reported by someone else and that was about it for the whole day. When I went to plug it in for the night, I checked the chart and saw a very gradual slope with the exception of a small, steeper tick where the camera use was. After 16 hours off the charger, I still had an 81% charge. Not bad stand-by stats.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jakem90:
What settings are you using on juice defender and how often are you using your phone throughout the day, just curious cuz I've been trying everything to make my battery last, right now I've got 12 hours with 20% left

Sent from my Rogers Samsung i727r!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] renegadefunk:
Ate you on stock ROM?

Stock with stock Rogers kernel gives best battery
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] colonel187:
My battery usage was ****ty when I was trying out roms. Since I went back to stock (2.3.5) my battery life is great. I'm staying with stock and frozen bloat.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jakem90:
No I'm running skyicecream rom and just calibrated my battery

Sent from my Rogers Samsung i727r!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] rosendo192000:
Well the verdic came to the end , I have returned the SR back for a iphone4s . I liked everything about it except the battery on it and mms .. It wasn't just for me . Hopefully android fixes these issues for those that still have this problem . Thanks for all the help you guys gave me and wish everyone the best
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] GalaxySkyrocket500:
Good luck.;)
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ruebarb:
This was best case, not a typical day.

SkyROCKeteer

Da_G 0.3 kernal

SetCPU 54000 min, 178000 Max, on demand

Juice Defender Ultimate, Advance Options

Average day
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] nick931224:
i think is not horrible, i was use HD2, that was ready horrible.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jakem90:
Looking at peoples stats alot arnt using many apps, that's the only way I can see their battery lasting over a day, I play games and go on Facebook/twitter and see my battery going down alot faster, overall my battery has been better since I calibrated it, I'm usually around 20% after around 12-14 hours. Will post back later tonight my results today

Sent from my Rogers Samsung i727r!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jakem90:
15% in 2 hours! I've probably actually been on my phone for maybe 30 mins, really hoping for a new ROM update so I can start fresh.

Sent from my Rogers Samsung i727r!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jedah:
min CPU?

For those using setCPU or other CPU controllers, what are you using as your min CPU speed? I know some people have used 192 MHz, but I'm not sure if that was on a stock ROM or kernel. I think on one of the kernels, there were problems going down to 192MHz.

I am stock and rooted.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Eyedoctor2:
Hopefully this will save you reading through this whole thread

Had horrible battery life on my stock Skyrocket. Was typically down to 20% or less after 8 hours using it basically only as a phone and maybe four times a day at that.

Read through this entire thread and utilized the following two steps found within this thread:

1) "I also did something funny that I read on some boards. I charged my phone to 100% on when the phone was ON and then once it reached to 100%, I turned off the phone leaving it on the charger and waited for it to tell me I was at 100% (took 2 minutes)".

2) Download and installed Juice Defender Beta

https://market.android.com/details?...NvbS5sYXRlZHJvaWQuanVpY2VkZWZlbmRlci5iZXRhIl0.

My battery yesterday after 10 hours of use, including internet and phone use had 68% remaining.

Not as great as those with custom ROMs have reported but completely functional for my needs.

Thanks to all who contributed to this thread.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] blackraven1425:
Battery will die quickly with usage under many conditions. The worst offenders are the display and actually talking on the phone. Ill get maybe three hours of talk time from full charge. The display is going to drain the hell out if a battery with a screen this size. It would be better to play games on a smaller screen if you're really concerned about battery life. The only thing I can suggest is using JDs brightness option, or at a minimum automatic adjust under settings display brightness, to minimize this as much as possible.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Sheolrock:
Display and LTE are juice guzzlers. I just bought some extra batteries on Amazon and don't worry about it.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] GalaxySkyrocket500:
Turn "data packet off" when at home, work, use wifi..

I always get 28+ hours on a battery....

If you play games and sit on Facebook all day.. any phone will die quickly..
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] judono:
I use the Xpal powerskin for Skyrocket. It's not cheap, and it adds some girth to the phone, but for me it's well worth it.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] justcalled:
I have had this phone for 4 days. Battery is so bad!

I charge the phone to 100%, turn it on at 7Am and in 3 hours it is below 50%.

I also have this strange situation where Android system uses most battery

Today after 8 hours It looks like that:

android system 30%:confused:

display 26% (at lowest brightness possible):confused:

android core apps 8%

wifi sharing 6%

dialer 5% (today I made 1 phone call that lasted 1 minute!)

android os 4%

cell stand by 4%

Why is Android system on my phone using so much Battery? I saw on other phones Android system uses just around 10%

I heard some people did factory reset and it helped. In my case AT&T rep told me to do factory reset because there were some problems with internet. Still battery life is so short! I do not play games, I barely make any phone calls from this phone, just check 1 email account (I don't get too many messages there) - I have not even sent any emails or messages from this phone. Today I looked once at NY Times page on internet, twice at cnn page. I don't watch any videos, no facebook, nothing. I barely use this phone. I think the battery should be at, like 95% at this moment!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jedah:
Does turning WiFi on automatically disconnect data (seems to, but I don't know for sure)? Or is there something special we need to do to disconnect data?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] fongz27:
I joined just because I've never had a touch-screen smart phone ever... but MAAN !! Is it me or this phone is a battery hogger!

Is this normal? I charge it to 100% on the OEM block wall charger......I come home from the gym...

Unplug it and what do you know, 1-2 minutes after unplugging it and checking text messages (4G / Data is off / Wi-fi off).....

99% already, then after 8-10 minutes of checking / replying sms and checking a few items on facebook, 98%....

I'm really thinking I have a bad battery??! or am I just not used to these types of new phones (I upgraded after 4years on my nokia e71x)

Using CPU Spy, and with brightness all the way down.

Also using battery monitor widget pro after 5-8 charges now.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] appdroid:
calibrate the battery it will surely do the trick for you.

its not normal. Got something that's eating your battery.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] PsyCl0ne:
Guys, also check to see if you have k9 installed. Actually over the last two days my phone has killed itself in the matter of ~6 hours. But if its worth anything here is also a +1 for Juice Defender, great app.

~PsyCl0ne