yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
Your experience with the phone mirrors mine. However, very much like me, it is likely that you have a bad battery. Mine was doing similar things such as sticking to 100% (its firmware was not communicating with the phone), overheating, etc.

I took the following steps

(a)

Replaced the battery

with another one. This fixed the sticking and overheating issues

(b)

Removed the gadgets that were polling the network all the time

. These are mostly the weather gadgets (I kept the time one). They drain the battery needlessly. They are nice to have if they are not too demanding of juice, but this is is not, apparently the case

(c)

Reduced the screen to 50% brilliance.

The phone is overly brilliant any way, this is just fine

(d) Installed J

uiceDefender Ultimate

.

Now last comfortably throughout the day and even has battery to spare at the end of the day. My usage is moderate (mostly checking email accounts - I have 7; some searching of the markeplace for a few application; some use of the camera; and brief web surfing to answer some questions). If you use the phone heavily, then the battery will be drained very quickly.

What one can guarantee is that this phone (and most top Android phones) would not have the battery life of a Blackberry or an old Windows Mobile phone. Android is well known to be a resource-intensive OS. It is the only OS that does true multitasking and unless one forgets running applications, battery life would disappear. The other top OSs such as iOS and WP7.5 do not do true multitasking. They fake it but allowing notifications and freezing applications in the background. Only selected applications such as media players are allowed access to certain routines that allow them to run in the background. Thus, if you need a more managed phone it is best not to buy an Android one.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Da_G:
Yes, the kernel I posted is by default overclocked only 54MHz from stock (1566 vs. 1512) - running at 25mV less power.

Stock ranges from 192MHz @ .8125v to 1512MHz @ 1.2v, non adjustable

My kernel ranges from 54MHz @ .8v to 1782MHz @ 1.275v, adjustable. By default it is overclocked only 54mhz to 1566, with a slight undervolt which should run fine on everyone's system.

GPU is however overclocked in the kernel, and currently not adjustable. I will be adding a tunable for it soon so that it can also default to stock speeds and be optionally overclockable.

So the short answer is currently no, you can't use the modified kernel without at least a slight overclock.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] hgorijal:
battery (incorrectly) stuck at 100%

I have the same problem.. Battery reports 100% until I realize that the phone has switched off.. At first I thought the phone is bricked.. until I connected the charger to notice the battery was totally drained..

Happened twice this week..:mad:
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] garyd9:
I found a different solution (or perhaps only an additional item to check for those with similar issues.)

I'll be posting another thread on it in this forum... "Exchange Activesync and Quick-Draining Batteries"
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
You have a defective battery. Go back to the store and change it. It is now a well-known problem for these phones.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] yval8957:
Wake Lock

Hi everyone, just got the skyrocket and the battery has been ok, but I've noticed one thing in the battery usage screen. My phone doesn't go to sleep! It's always awake. There must be some sort of wakelock process that doesn't allow the phone to go into sleep mode. How does one find a way to find which process is the culprit? I've tried rebooting the phone, removing the battery, but it doesn't change the problem.

I saw in an earlier post from someone with a screen shot of the battery usage and his phone did seem to go to sleep (the "Awake" bar was not solid throughout). My "Awake" bar is solid throughout. Any recs would be appreciated.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jtaliaferro:
I haven't had enough time with this device to gain a base line for battery life, I can tell you that mine is charging really really slow!!! At about 8am I plugged the phone into my ipad wall charger which charges at 2.1amps per hour. At exactly 11am the charger has placed 40% (from 43% to 83%) battery life back in the phone... Now I would imagine the phone is doing some charging regulation. Even if the amperage input is reduced to a rate of 1amp per hour, something is not adding up!! there should have been 6000mah placed in the battery at 2.1amps and 3000mah placed in the battery at 1amp? The phone has a 1.8amp hour battery so unless im missing something my battery may be bad?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] BKayrac:
if you guys care, i posted a long post over at phandroids forums, at the end i checked my hours and battery life, and i came out with this

"btw, just checked, 18hr, 17min, 35sec on battery, and i am at 64% "

i'm using juicedefender ultimate as well, but pretty stellar battery so far for me
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] imtiaz3:
Currently I've had the phone since Monday. Right now I have been running 2.5 hours and my battery is down to 76%. I have been messaging throughout the day with this and played a game for less than 5 minutes. I consider my self a frequent user, not so much a heavy user, not doing anything very intensive, alot of messaging yet it drains very fast, also takes a long time to charge.

My battery stats show my display using 50% of the battery. For those of you who have exchanged your battery, have you had any better luck since?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Scythe024:
Juice Defender set to balanced

Auto brightness turned off

GPS turned off

Wifi off

Brightness turned all the way down (until i need to brighten it, but usually im indoors for work and all the way down is bright enough)

I also cycle the battery from 7-8% to 100% and pull it off the charger as soon as its done. i dont let it sit charging overnight at all
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
I have to say that I was also originally dismayed with the battery but with Juice Defender Ultimate and with lower the screen brilliance, removing a few juice-hungry widgets, the phone now has more than acceptable battery life. I am really dismayed by the fact that AT&T does not try to provide any guidelines for battery use and configure the phone with the appropriate settings for a balanced battery life. It is all left to the users.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jamgam:
Well. I think I might be on the bad battery life train. Got my phone Thursday and been monitor and fiddling a little with it but last night I laid it on the nightstand when I went to bed with the battery at 95%. This morning I got up and it's 70% less than 7 hrs later.

I did have the stock accuweather widget but it was not set to refresh.

The only other widget is gtabsimi clock with the weather set to refresh every 4 hours.

I have the free version of juice defender installed with default settings and

wifi was turned on. the wifi sleep policy is set to never (I might change that to screen turned off).

I have 2 gmail accounts that sync and that's it. No Facebook or other email, no exchange servers etc

I removed the accuweather widget because I have found even when widgets say they aren't refreshing they're still draining battery (at least on my captivate)

Here's my batter stats. As you can see the display is kinda bottom of the list for me
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
I think that this is easy. If you have the Wifi enabled all this time, this would drain any phone fast, not only yours. I think that there is a utility that shuts down the wifi if it is not being actively used. Try it, it may do it for you. The reason that the display took so little juice in your system is that the phone was not actually used during the period you suffered the actual battery loss, only your wifi was on.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ElCamino:
I picked up the SR this past Tuesday and noticed that I was getting very little battery life from it. Loaded the same apps I used on my GSII which had great battery life even with heavy use it would only drop around 25% at the end of work.

Well after all week and looking if there was something causing the short battery life on the SR I wiped the data and restored the SR.

The battery was draining 5% every half hour, and that was without any use, maybe just a quick text and check email. So i knew something was not right. That's why I decided to wipe and start all over. Well good thing I did. After the reset, the battery went from 31% to 17% in 8 hours with email, texting, started Google maps, downloaded 2 apps and browsed for a little bit. So now it looks like it will have much better battery life. This is also with WiFi on.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] imtiaz3:
Nm, I saw another one of your posts, so you basically just did a factory reset through the device settings. Will try it and see how that works. Thanks
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jamgam:
Mine still dropped 10-15% overnight with no use (wifi turned off etc). The only thing that is staying on is GPS and that shouldn't be running with the screen turned off I don't think.

I might try the reset and see if I get better results also
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] imtiaz3:
I tried it on mine, and it doesn't seemed to have made a difference for me, but I'll give it a couple of days before I make the final say
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
Please do not. Why are you surprised that the phone dropped 10-15% overnight? This is actually quite good. These phones do not keep their charge intact even if they are not used. In a totally unused state, they usually run out of juice within a couple of days, as stated in the manual and all the reviews.

I think that some here have unrealistic expectations from today's smartphones. If people want to increase battery life beyond a full day with a decent level of activity, then they need to get an additional battery. Here is a very nice solution to the problem, a protective powerskin with an additional battery that doubles battery life

http://www.amazon.com/PowerSkin-Pro...?s=electronics&ie=UTF8&qid=1321898780&sr=1-12
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jamgam:
Dropped 35% last night. I'm getting close to the take it back to AT&T point. I'm afraid to actually use it unless I'm near a power source
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] hinduboy74:
Just picked up TiBu premium and froze the shiz out of everything that was useless. Found a great list for our phones on the forums here. I did it about 1/2 trough today so i'm not going to count today as a full test. planning on charging fully tomorrow and then testing it to see if they made a difference.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
You are all aware that no phone stays fully charged for ever, the standby duration is hardly more than 40 hours. The fact that the battery level may drop anywhere from 10% to 30% over 8 - 10 hours is hardly unexpected in any modern smartphone. My guess is that you want to eliminate unwanted applications that poll data constantly and reduce errors (as these sap power).

I definitely recommend Juice Defender, it makes substantial difference
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] TroyBoy30:
my iphone 4 drops 1% per 7 - 8 hours of idle time. just sayin
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] thistransition:
i was getting pretty terrible battery life with my Skyrocket, i was also getting the drastic percentage drop overnight as jamjam was reporting...

Switched to the HTC Titan (a Windows Phone) and could not be happier. Have only had it for a day and a half but battery life has been amazing so far.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
I hear you. How much of it is real? How long would the iPhone retain charge if you do not use it? If what you say is true, a fully charged iPhone that is not used would remain usable (on standby) for up to 1000 hours!!! Wow, this is battery life

Please, let's get serious here!!!!

---------- Post added at 09:36 PM ---------- Previous post was at 09:27 PM ----------

The Titan is a good phone with a few nice advantages but certain limitations. It is a single-core phone, which is fine because the current generation of WP 7.5 does not tax it too much. It has only an LCD screen, not an AMOLED one. And it does not support LTE. It does have, however, a good camera. The Skyrocket with ICS (in a few months) will have an excellent utilization of the dual-core processor.

WP 7.5 is OK. I seriously considered it but I decided to buy an Android phone. I do not like highly managed phones. As things stand, Android is now the only mobile OS that allows access to the file system. WP 7.5 needs to grow for one more generation for me to seriously consider it. Resolution in screen and video is limited, LTE support is missing, customization is close to impossible and there are just too many clicks in the phone to get important information (despite MS claims). I am sure that it would mature fast and by version 8.0, it would be a great competitor. Not now.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jamgam:
Real world example with the iphone (even though it's not what we're discussing). I took my iphone 3GS off the charger on a Monday morning and flew to Mexico from Atlanta for vacation with the Mrs. I left the phone in the hotel safe in the room for 7 days without touching it. When I looked at the remaining battery as we boarded the flight home it was still over 50% capacity.

So, when I turn off autosync and don't have any widgets or data connections and my phone is asleep I kinda expect it not to drain really fast

Now, on to the skyrocket. Removing the Facebook app seems to have greatly improved my battery life. I never logged in or opened it so I can't explain that but I'm not dropping like a rock anymore when the phone is asleep
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Rexcrispy:
Battery indicator solution

I have been having the same issue with my Skyrocket the last few day and I believe I have discovered a solution. If when you are charging the phone to 100% (most likely over night) you use the power adapter that came with the phone, you should not have this issue. I was using a multi-port, iphone power adapter to charg mine over night and it was causing this issue. Hope this helps.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] ElCamino:
Yes just Factory Reset on the phone and reinstalled my Apps again. Root still stayed intacked.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] imtiaz3:
Yea I've been using the phone still the past few days. The Battery life seems to have improved. Don't know if it's a matter of having the battery "broken" in or the factory reset. But currently on 10 hrs of use and I have 50% remaining. My display is still the most power hungry thing on the device. Granted having this phone for the first few days, I probably naturally drained the battery so fast maybe because I just couldn't put it down :) but as of now it looks superb and I am sticking by this phone until the bitter end. Thanks for all the suggestions and help!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] nizmoz:
I tried this and with juicedefender in balanced mode I got way way worse battery life. I dropped 30% in a matter of 2 hours of the phone not even being used. I removed it and charged it back up and it only dropped a little bit. So I don't see that app working at all.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] BKayrac:
what i quoted above was with very little use

with juicedefender, i can stream pandora for 3.5-4hours, and do some fairly heaving emailing during the day, along with waze(gps navigation) to and from work

and after about 10hours(3am-1pm) i am left with about 25% usually

dunno what to tell you about the massive drain, did you check your battery stats to see if it was awake during that entire time?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] hinduboy74:
After doing some major tweaking:

-Stock juice defender

-TiBu froze sooo many useless apps

-managed screen brightness

-bluetooth on all day

-wi fi on when at home

-contant use all day

I'm getting through the whole day no problem. And while at work or home if i get a quick little charge in i can easily make it out till bar close or later so happy to say this worked out quite well.

JD
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
Yes, a careful management of the phone pays good dividents. I would post this in another thread, but I also purchased "Powerskin for Galaxy S II Skyrocket" and the phone can go on for almost 2 days with the additional battery. Very impressive. The Powerskin is a bit bulky, but amazingly useful for occasions in where very long battery life is required such as when I travel internationally. Great, great accessory.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] GalaxySkyrocket500:
15 hours and 40% left... gotta love root and debloat!...
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] imtiaz3:
How is this possible? Do you have your battery stats handy?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] androidpixar:
Sounds like all he did was root and debloat and that did the job!
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] imtiaz3:
Yea I'm giving that a shot. Just rooted last night removed alot of the stock apps from rogers and samsung. I am also giving cpu tuner a shot to set the CPU frequency lower when the phone is locked. Seems to be ok so far.

Typically besides removing the stock apps, what else is typically done to debloat the OS?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] draztikrhymez:
Im very impressed so far with the battery life. What app do you all use to show statistics?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] linkismyhero:
I unplugged my phone from the wall at about 1 AM and went to sleep. When I woke up around 10 AM, my battery was down to 48%. Is this normal? :confused:
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
Well, this is about 9 hours of standby time. If we assume that a totally idle phone has a 40-hour standby time, this means that the phone consumes 2.5% of the battery it total, absolute standby. This means that in these 9 hours, a totally idle phone would have been down to 77.5%. It is apparent that your phone consumes 5.5% of battery when you are not using, twice what a totally idle phone uses. Thus, the conclusion here is that your phone is not totally idle but there are services that are being used. For example, if your GPS was on, this would have been an additional drain, if the phone was polling your email ever 30 minutes or so, this would have contributed to battery utilization and so on. So, it is really up to you to find out what are the applications and services running in the background that consume these resources. I bet that you do not need 80% of them.

Without rooting the phone, installing JuiceDefender Ultimate (balanced use) and carefully weeding out useless services, I have brought battery consumption of an idle phone to about 3% hourly. With moderate use, I have about 30% of power left by the end of the day. Now, if you root the phone and remove much of the AT&T services that cannot be removed unrooted, you would make further gains.

In addition, I did buy the Powerskin for Skyrocket. With the Powerskin and the phone fully charged, I am at 80% of power by the end of the day!!! Now, the Powerskin at $80 may not be everybody's choice but it works for those who really need access to a phone for 24 hours or more (It actually goes to 36 hours with moderate to heavy use).
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] SnapGrit:
I am at just over 48 hours of battery with relatively light use, and only HSPA+ (?No LTE). So far, this battery has been amazing (still 10% left).
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] jedah:
Are there any bloat apps we should NOT uninstall or freeze that the phone depends on? Or can we go in and freeze all apps that start w/ "AT&T.."?
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] Abhoe:
Is it just me or does this phone charge incredibly slow? Would dialing down the CPU when the phone is charging using CPU Master impact rate of charge?

I am dunning Da_G 3.0 and BoneSTOCKeteer 1.0 as of this morning.

(This stuff is addicting by the way.)
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] aretzios:
I do not know what you regard as slow. The phone takes about 3 hours to charge fully and I think that this is on par with many other smartphones. If it is much longer than this, you may have a defective battery or you have a problem with your charger. Chargers not adapted for this battery do have problems, apparently.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] crispy1805:
With SkyROCKETetter, Juice Defender Ultimate, and DA_G 3.0 I get 24 hours of battery life with moderate use (HSPA+, no LTE). It drains about 1% an hour when it is in deep sleep it seems.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] cmlohff:
What apps do you guys use to monitor battery stats? I just got my Skyrocket and still haven't found a decent one.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] tehee:
I just use the default samsung battery monitor settings. It can be found in:

Settings>Application>Battery Use
[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 cleared everything through clock workrecovery/advance. Then I flashed stocked though Odin. And then used regular recovery to do factory reset. That fixed the issue for me.

Its been 10 hours and I have 43% left.
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] BKayrac:
just to follow up

currently at 31 hours, and 28% left

barely any use though, light gps use, and some light app use, light email use, survived a night with me sleeping

overall been very good, all stock, i've been experimenting with/without juicedefender, this one has juicedefender for a few hours on...and uninstalled to try without, so far so good

i actually restarted my phone just to make sure it was right......i also purposely ran a few apps for no reason, just to watch the % go down, just to make sure something funky wasn't going on....and nope, it's accurate
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] polish_pat:
Less than 40% in 10.5h. This is without shutting of wifi, auto-sync or other stuff. Juice defender does underclock my CPU when in idle. I can usually get 30 hours when wifi is off and even more if auto-sync is, but it will never happen as i want my notif and email
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] L1near:
Well I think I've finally got my phone where I want it to be for battery life.. I'm using stock Rogers kernel, so no over/under-clocking, I'm using the 1.0.3 Qwik Wiz ROM. I had an issue with wifi sharing at the beginning of this charge, but I've since frozen that app in TiBu. Other than that, I haven't made many other mods. I pretty much used my phone normally.. And I got These results even after wifi sharing ate up 10% of my battery in like 20 minutes..
[AT&T Samsung Galaxy S II Skyrocket SGH-I727] gheck911:
Ummm, the change-log for QuikWiz says its using Da_G's 0.3 kernal. Did you flash back to the stock kernal after installing the ROM? <----is that possible?

Or are you using 0.3 and just haven't applied any OC/UV settings?

Just curious because the ROM is sweet as hell except for the battery drain I experienced. Didn't re-calibrate the battery tho.