yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Lilbrian15:
well when i say i dont use my phone, i mean it its there on a desk not being used at all, i'd have a couple texts, emails and like a missed call but thats about it, i dont go back and check these things until im finished work

2. i mean it gets hot, im used to the warm feel, i get the warm feel when its charging and im using it at the same time, but this time i had the phone left alone and it got warm around the camera area, and hot at the battery
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] bmr169:
im getting about 12-15 hours battery life with s voice running all day in backround processes so it can wake up when i tell it to. i use my phone constantly cuz i get so bored at a desk all day so im always flashing new roms and other tweaks
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] garydv2002:
Sounds like to me you have a major hardware malfunction. Maybe a bad battery or charger but sounds more like the battery to me. Are you using a after market or stock battery? If you have warranty you may want to call your carrier for a warranty replacement if you have on. Also you may want to try a factory data reset just in case it is a software issue.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Lilbrian15:
Well this is what ive been experiencing on the stock i727r battery, fortunately i received the g nexus extended battery i ordered and well the battery doesnt get hot while charging, and it held up its charge, but couldn't do a full comparison because i was on my phone all day today lol, its so hard to keep my hands off this thing at times :D

i guess ill give my carrier a call and see what they can do about the battery, i hope i dont have to give them my phone, i got it unlocked and i dont want to have to get another thats locked, and i dont want to have to odin back to stock lol
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] garydv2002:
Well if its only happening on the stock battery and not the other you ordered I would say that the stock battery has a short inside and is bad. I don't know about Rodgers but if I called att and told them everything and it only done it with the stock battery they sent att would just send a battery and make me swap the whole phone out. They warrantied just a battery for me before. But it really sounds like a bad battery to me.. if you know someone who has another phone you could try that battery in it would tell you for sure....
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Lilbrian15:
I'll let it sit for few days and charge it and check it out again, and i'll give my carrier a call, but thanks so much for all your help, its really appreciated, keep up the good work!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] hinduboy74:
Just upgraded to the Verizon nexus extnded batt and let me tell you, night and day. Now i don't nanny the phone like i used to since i'm a power user. I use it at least 20% more than i did before and i'm getting at least 15% longer life. I think if i nannied it like i did before i could probably end up with 35% by the end of the night easily.

So glad i got this.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] only1waqas:
My battery life is not that good even after flashing this rom

[ROM] SKYICS 4.2E-7 (ULCE2) 5/24/12---fast as f**k.. Amazing battery.CRT OFF!!!!!

After half day my batt life is about 50%

any suggestions?

---------- Post added at 09:46 AM ---------- Previous post was at 09:45 AM ----------

also my display shows 37% in battery usage.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] tekardi:
Sky ICS ugly battery life

Just installed latest base 3 and I can t get more than a 5 hours decent use , my phone gets hot Doesn t happen this with ucld2 leak I think might be radio ....
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] wizdum69:
have you tried to install SETCPU and setup profiles?

id set the INCALL profile to only use half of the cpu, should resolve your in call heat issues.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] wizdum69:
+1!!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] xcrazydx:
-1

It's from lack of knowledge
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] custommx3:
Not always, I can have a fresh install, wifi, BT, sync, all off, and my battery doesnt last very long compared to previous phones. Pretty said I have to carry around a second battery.

Running any ICS rom, my battery just drains. was fine on 2.3.5. I may go back just to get a days worth out of it.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] xcrazydx:
because you lack knowledge
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ddxv:
Care to share this knowledge? I also installed SkyICS UCLD and get a hot phone and low battery usage. I'm just now going to be reformatting everything and trying the newest iteration of SKYICS and would love to know what you do to improve the battery life.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] garydv2002:
I'm seeing a recurring pattern starting to form with what people are posting here on xda across the skyrocket forums. Some are complaining of fast battery drainage and really hot battery's especially up around the camera area on the back of the phone. And of batteries being to hott to touch and in some cases where the person tried a after market battery the after market battery did not get hot or drain. So I'm wondering if maybe Samsung put out a bad batch of batteries in some devices? Could this explain how two skyrockets on the same rom be so far apart on battery life? I know how you use and the apps that run make a difference but we are talking about a major difference. I've seen some say they get a whole day and some say only a few hours. Keep in mind I'm far from being an expert but I just had this thought and figured I would share it. As far me my battery is the same life now running ucle2 leak rooted and debloated as it was on 2.3.5 rooted and debloated. So what's your thoughts is it possible that a few have got bad batteries or just a bad rom or modem flash????
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] RabidSmurf:
My battery life was bad on that ROM as well (On update 5 anyway, haven't tried 7), I flashed to CM9 alpha3 and it is way better. I would barely get 12 hours on Sky ICS ROM, but I can get well over a days use (off and on browsing internet, app store and texting), and I suspect with light use I could get 2 days easily on CM9. Just as an example, I took my phone off charger 18 hours ago, and I am at 64% currently with some light-medium use during the day.

I am definitely a noob at this stuff, but I personally think it has to do with bloat in the Sky ICS rom. There is a tonne of crap in there, 3 different launchers, several different weather and news apps, all stuff I personally will never use. I removed 90% of the apps after flashing to Sky ICS using titanium backup (not sure if that's even the proper way to uninstall?) and it seemed to help a bit, but battery was still bad. Recent updates to the Sky ICS thread imply that the bloat has been cleaned up some but I haven't tried it since update 5, it might be a lot better now.

The CM9 alpha rom is nice and clean and I have had no major issues despite it's Alpha state.

Just want to say I don't mean to bad mouth SkyICS at all, from what I saw it was definitely a high quality and polished ROM (I really liked the speed-stripped Gingerbread version), but after going through trying most of the popular ICS roms here I have settled on CM9 as the best so far (for me anyway). I like the non touchwiz interface, lots of options for customization (the lock screen is awesome) and I seem to get better battery life.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] xcrazydx:
I've already posted some tips in here
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] NYFan:
The problem with that phone is the specs are weaker in some areas to other phones on the market. Such as the camera. The nexus only has 5mp whats up with that?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] xcrazydx:
He didnt get the phone, he's using the extended battery from it in his rocket like most of us have been for months.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] NYFan:
How much bigger does that make the phone and does it still fit in your case?

I have 4 standard batteries for my phone so I usually keep one in the car one in my pocket etc.

---------- Post added at 03:45 PM ---------- Previous post was at 03:43 PM ----------

I was just looking at this rom and it said it uses Edge to transmit data not 3g or 4g so I would assume that is why the battery is significantly better.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] xcrazydx:
It fits just like the stock would. Some bulge a bit, some fit slightly different than others.You can trim a small bit of plastic off if its a problem. Mine fits great in a case or naked. I trimmed a small bit of plastic off of it.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] NYFan:
Maybe I'll pick one up myself. Whats the model # on that battery? I'll get one off ebay but just want to make sure its legit.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] only1waqas:
I take it your talking about this rom?

http://xdaforums.com/showthread.php?t=1621679&highlight=cm9

It goes over these known issues. Have you experienced any? Also it says to use EDGE Instead of 3G

Known Issues

The most up-to-date list of issues in on our Google Code page. Here is a summary:

radio: "Use only 2G networks" option in Settings does not work

radio: Changing "Preferred network mode" in Settings may not work

screen: Touch screen can lock up; ignores touch input but physical and capacitive buttons works; requires reboot

screen: With automatic brightness enabled, screen will brighten just before timing out to turn off

audio: In-call audio is too soft - handset and speakerphone audio

camera: "Pinch to zoom" in Camera does not work

camera: Tap to focus in Camera does not work

peripherals: MTP mode does not work - stick with USB mass storage for now

CM9 general: CM9 does not support syncing your contacts with Facebook. There are 3rd party apps that give this functionality, however.

---------- Post added at 12:15 PM ---------- Previous post was at 12:10 PM ----------

I used quickwiz rom 6 months ago and the battery life was amazing. I upgraded to a different rom because after some time the battery life wasnt as good.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] RabidSmurf:
Yes the unofficial CM9 Alpha 3 ROM.

The signal indicator shows 3G/H, if it's accurate that's not EDGE afaik. I have experienced EDGE network data speeds before and it's ungodly slow. This is comparable to my 3G captivate, but significantly slower then the 4G/H+ I was getting on other ROMS (I am speaking subjectively here, no numbers to back this up). Another poster indicated that this could be the reason for better battery life, and could well be right on that.

This rom does come with some CPU throttling options as well which might be handy for conserving battery, I haven't really tried them out, DEV thread indicates possible problems with these settings, but other users have mentioned that they're using them in other threads.

As far as the current known issues I can pretty much say I have experienced all of them, except the touch screen lockup issues (Phone has been up for about 4 days on this ROM now without any lock ups or needing a reboot for any reason). At least with the way I am using the phone the issues don't greatly affect me, so I am sticking with this ROM and waiting for the next alpha/beta release, which I hope includes a 4G/H+ fix.

Indeed the network settings seem to have no impact on anything, couldn't force to EDGE/2G if I wanted to.

Edit: Actually forcing to Edge does work, my bad, un-checking use 2G only doesn't give me 3G back, a reboot seems to be required.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] nl5591:
I get a full day but only if I don't watch any videos. overall its about the same as my old iPhone
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] vincom:
on skyics by seanscreamz, most everything is off, very light use the past day and a half, see attachment
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] big_boludo:
Anker brand aftermarket batteries

Anyone ever tried the "Anker" brand batteries for sale on Amazon with a Skyrocket?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] garydv2002:
Anyone know how to tell what apparently is keeping my phone awake and active.. running ucla3 and the battery life just sux. The battery app built in gingerbread says android active is constantly running... so how do I know which app is actually causing this?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jedah:
Try Badass Battery Monitor.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] dumitresc:
I recently update the skyrocket to Android 4..

And the battery really sucks so much..

I unplugged my phone from the wall at about 1 AM and went to sleep. When I woke up around 6 AM, my battery was down to 98%.

Do i have to downgrade to 2.3.6 again? Ice cream have battery drains problems?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Wickidmasshole:
Soooo you are upset over 2%.battery loss over 5 hours??
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jedah:
My thoughts exactly. I'd like to know what rom this is so I can switch to it.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Wickidmasshole:
I hope he was just trollin
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] dumitresc:
mmm no, the other way..

the cellphone loss 98% ... and then start to tell me connect to AC cuz no there's no more battery.. 5 hours.. loss 98% while I'm sleep.. wtf.

Im looking for a real rom or better room or make a downgrade to 2.3.6
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Wickidmasshole:
Next time word it right
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jedah:
Now that we have that out of the way, maybe you wanna give more detail:

What rom are you using? Which version?

Did you look at the battery drain in settings to see what's causing it? Do you have other apps to tell you what's going on (betterbatterystats, badass batter monitor, cpu spy, etc)?

What radios do you have turned on, etc?

What did you get before on 2.3.6 (or 5)? Do you have a benchmark to compare to? Maybe it's faulty hardware (doubtful).

Cell reception? Sleep/Awake time?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] dumitresc:
Well.. basically I dont remember if it was 2.3.5 or 2.3.6 to 4.0.3

but I made step by step this:

http://www.androidauthority.com/galaxy-s2-skyrocket-att-sgh-i927-android-4-0-3-ics-ucalc4-72072/

I was reading on internet websites that posibly i update the S II LTE version (i9000) , but no.. i realize that was the "correct" update.

Now the battery drains in 4 or 5 hours with no phone calls no wifi, no videos nothing.. literaly standby.

Do i have to try with another rom ?

thank you for your response. (And im sorry for the english btw)
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jedah:
That's the very first, and buggiest leak. So, for starters, you can flash this version instead

http://xdaforums.com/showthread.php?t=1652679

If you're in an LTE area, that will drain your battery more. So, if you have Wifi, use it. I'm sure there are other things causing the drain, but we need more info from you. See my post again.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] mznatnat:
I am reading all these posts in amazement but this post seems to be just about right. My boyfriend's skyrocket gets crappy battery life...
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] dumitresc:
Problem solved.

Doing this:

http://xdaforums.com/showthread.php?t=1342348

Return to 2.3.5 and Battery life was improved.

12hrs for 28%. Still have 72%.

Thank you so much
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] cnewsgrp:
Try this ROM

See my post. I am at 72% after 24 hours of medium use.

I tried ICS for sometime, but like stock like GB for stability and battery life.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] nilchameleons:
I'm about to do the same thing since I've had a very noticeable drop in battery life since switching to an ICS ROM, but Swype on ICS just works so much better than the Gingerbread version!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] pedalfasterben:
If anyone is curious about stock vs the more popular ROM's, here's my experience

BEST

Sky ICS (Any build, Shawn is awesome!)

NexusMod (Any build)

AOKP (R4 = M4+ > R3)

Stock GB

ICS Leak

WORST
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jedah:
Looks about right. Would it be safe to assume you mean the ICS builds for Sky ICS and NexusMod? I never used Mod's ICS version, but NexusMod 4.3 for GB was very good for battery life. It wasn't necessarily better than all the ICS roms, but more consistently gave me good results.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] pedalfasterben:
Good point, yes, all ICS except GB stock.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] _wik:
I have some very good results with nexusmod ICS and SkyICS so i can vouch for those

not necessarily right on topic but the T.E.A.M. Battery Bar that shawn built into SkyICS is really great and i actually installed it in my NexusMod
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jedah:
I just took SkyICS 4.2E-13 for a spin yesterday, and I was very impressed with the battery life. While I was sleeping last night, with Wifi on, the phone drained -3% over the course of 7-8 hours.

Below are my results for the day. I'm a very light user. Screen on time was probably only alittle past one hour. That said, a large chunk of time was spent outside with LTE. Before, when idling in LTE, my drain was usually around -4% to -9%/hour. Yesterday it was between -2% to -4%/hour. Fantastic. The big dips in the chart were probably when I was streaming music in the car to and from the venue. I also suspect not installing Line and Kik Messengers helped alot this time, since they usually wake up the device very often.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] garydv2002:
How about a 5% per hour normal use battery drain.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] _wik:
23.5 hours on NexusMod

Swag
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] christianxin:
stock gb is better choice than ics

Nexusmod + go launcher is the best performence and beatiful

i got 30hours for light use
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Jrockttu:
I could barely make it until I got off of work at 5 on stock rooted gb. With Sean's Sky ics (all of them, but currently rocking 4.2e) I easily get from waking to bed time on a single charge.

I recently bought the verizon galaxy nexus extended battery too and i'm finally satisfied with my battery life. I no longer have to wonder if LTE is worth the battery compromise. If you take the sticker off of the nexus battery it fits great.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] _wik:
nice tip ill try this out sometime
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Jrockttu:
It cost like $20. If you're comfortable loading custom ROMs, I can't recommend Sky ICS enough, it does most of the work, but the Galaxy Nexus extended battery adds a decent increase with no downside.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] rpr69:
See my post here for battery saving tips. I didn't come up with the list (I believe it was icenight89?) but I did figure out the charging part, and with those tips, plus the Nexus extended battery I regularly get 24+ hours with 2+ hours of screen time on battery with CM9. The tips I listed should allow you to get that on any ROM really, the biggest drain is if the phone doesn't go into deep sleep when idle. If it does, you will use under 1% per hour, if it doesn't, it's closer to 10%.

Tom
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] hasun:
Thankz
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Jrockttu:
Here are two posts of mine that give more information on why your phone won't go into deep sleep sometimes. It has to do with your charger.

http://xdaforums.com/showpost.php?p=26733386&postcount=2412

http://xdaforums.com/showpost.php?p=26754905&postcount=2504
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] rpr69:
Ah, the first post is the one that got me to look at the deep sleep issue in the first place, thanks for that! Also cool that it seems related to unlocking the screen first before taking it off the charger, I will try and test that tomorrow.

Tom
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] digitalnights:
My battery life is HORRIBLE! I get maybe 5 hours on a battery charge.... not to mention that I have to hard reset the phone every morning for it to show the correct battery level...
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] xcrazydx:
Use the oem cable
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] oreo_kid:
So you saying that using the OEM cable will increase battery life?

I'm wondering because I use an LG cable because the OEM cable is small.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] digitalnights:
Thanks genius. Never thought of that! *note: extreme sarcasm.*

I use the oem cable, plus there's no difference in the oem cable and a micro usb cable.

What makes the difference, is the voltages coming from the transformer that you plug into the wall.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] nbrowser:
Battery life kinda sucked with gingerbread 2.3 but since the upgrade to ICS 4.0.4 it seems to be a lot better going an entire day before bugging me about needing a charge. Unlike before when I would usually need a boost 2/3rds into the day.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] epapsiou:
U/V helps too

I UV mine by 50-75 and it has improved battery life while i see no performance hit
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] droidfoshizzle:
so i ordered a brand new battery last week. i've been having horrible battery life with the one that it came with my phone out of the box. even after installing custom roms, it was getting worst and worst. anyways, after reading and doing what the battery cover suggested, to charge 10 - 12 hours in your first couple uses, it seems now my battery is where it should be. now i'm getting 9 hours with heavy use. heavy use meaning i read my kindle book for and hour, browse the web or use my feeds to read news for 15 - 30 minutes, and throw in with a few txt msgs and maybe a phone call or two. sometimes i will often take a few photos and check/upload to facebook.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Frogacuda:
Ok, I'm convinced that there is a bug in how we flash our roms that affects certain users' battery life dramatically, and that 90% of the people complaining about the battery in this thread are impacted by this issue, and need to solve that and not use 100 different tweaks and tips to squeeze out a pathetic 12 hours or something.

Here is my phone in Cyanogenmod 9 with InstigatorX's kernel and a lot of mind paid toward battery saving. As you can see, even when the phone screen is off and it's in sleep mode, it loses 10% per hour, give or take.

Here is the same phone, same battery in UCLE2, flashed with Odin. As you can see the battery life is about 250% better. This is with NO tweaks, no SetCPU or performance options messed with, just straight out of the box use.

There is obviously a problem here that no one is addressing. It isn't calibration, it isn't the battery being bad, and it isn't that I need to set the governor to something.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] rpr69:
I've said it about 1,000 times, there is most likely a kernel wake lock that is preventing deep sleep while idle in the first case, and not in the second. If I do nothing else but ensure that there are no wake locks (easiest way is to simply reboot after coming off charger), I can easily get 18-20 hours on battery, if I don't check and there is a wkae lock, I will lose about 10% per hour at idle. Everything else I do is just to make sure that I get the most battery life while I'm actually using it.

I don't think it has anything to do with the ROM (as I had horrible battery usage on Sky ICS, currently on CM9) or how you flash, it's all kernel wake locks (or some other process that is sucking battery).

Of course I could be wrong, but *every* time I've had battery drain, it's because the phone does not go into deep sleep.

Tom