yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S II SGH-I777] Deenybird:
I know what you mean, it's why i bought the external battery first. I just don't believe i'd get 3500mah type battery life thru clocking down. Maybe 2000mah but not 3500
[AT&T Samsung Galaxy S II SGH-I777] Alucardis666:
Yea. I hear ya... A 2000mah battery that doesn't change the form factor and support NFC and could be isntalled using the stock battery door would be ideal.
[AT&T Samsung Galaxy S II SGH-I777] harlenm:
You can try this if you want. I made a fruitcake of my current setup. It runs good for me, battery life too. Install it and see how it works for you. Nandroid your current setup in case something goes wrong. Flash like normal,except do a 2nd factory reset from recovery before rebooting. It will prompt you to do it.

Let me know what you think.

http://db.tt/Y1vfaESH
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
Battery life is great for me :rolleyes:

Then again, I am using MIUI + siyah + undervolting. It easily doubled my battery life. That was a lighter usage test, but its not hard to make your battery last 12 hours with significant use.

Do what you want, but custom ROMs are the way to go.

Also, running GPS and Wifi all the time are MAJOR killers. Running wifi can interfere with deep sleep, therefor draining your battery more.
[AT&T Samsung Galaxy S II SGH-I777] pham818:
http://26.media.tumblr.com/tumblr_lxzcrsZc0b1qb4611o1_500.png

no big deal.
[AT&T Samsung Galaxy S II SGH-I777] joebobjoe:
By an iPhone, they have better battery life.
[AT&T Samsung Galaxy S II SGH-I777] mkosmo:
Unnamed mod (available in the dev forum) is very stock like with some ics animations, etc. It with entropy kernel offers some of the best battery life around. Debloat is critical since some of the stock bloat is a battery hog.
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
Can't tell if troll or stupid.
[AT&T Samsung Galaxy S II SGH-I777] votinh:
I don't know if 4hr+ is too short or what but you definitely using "too much".

By "too much" means you let the device "working too hard".

I'm a light user on bone stock 2.3.4 ROM.

I'll post my battery usage image of my phone tomorrow but basically, here's what I has

+ average 1.5 - 2 hours talk time per day.

+ every time I talk on phone, bluetooth is ON. I turn it off when not talking.

+ Tx and Rx about 10 sms per day.

+ almost 1 hour of using GPS (Sygic). Again, when not using, turn it off.

+ only about 1/2 hour wifi ON for quick checking weather, breaking news, and app updates. Using more on NFL game day.

+ virtually NO using AT&T mobile network. I turn it off.

+ Display brightness set "Auto"

+ NO "auto sync". I'll manually push gmail if I need to.

+ About 5 widgets running on home screen.

+ Never set vibrate, either ringing or silent.

+ No vibrate on keyboard.

Update: here's my screen shot of usage 2 days go.

At the time took the shot, it had 30% left.

Below Android OS, there were 3 or 4 more items
[AT&T Samsung Galaxy S II SGH-I777] midgaze:
My S2 I777 has decent batterly life

The screen eats a lot of power. If you want to use your phone all day then carry a couple extra batteries around, there's a set of two that come with a wall charger on amazon for $25.

With little use, my SGS2 gets pretty decent time on a charge:
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
This is my first Android phone that doesn't need extra batteries.
[AT&T Samsung Galaxy S II SGH-I777] Deenybird:
I wanted to follow up with details from betterbatterystats and cpu spy.

I've attached pics from the Settings app, and cpu spy. The betterbatterystats log is attached.

Today was lighter use than normal. Still using GPS and streaming audio for at least 1/2 the time, bluetooth and wifi on. Brightness at 75%. Light twitter and youtube.

3 hours 16 minutes of use left me at 46%.

I also purchased this battery yesterday (ebay link). People in this thread seemed to be pleased with it.

If i can't get 8 hours with the extended battery I will look into flashing one of entropy's roms.
[AT&T Samsung Galaxy S II SGH-I777] LiLChris06:
Roms and Kernals are not the same, and Entropy has Kernals.

Make sure to search around and read up on the differences.

In CPUspy you are suppose to reset it after you unplug the charger and go off on your adventurous GPS day. ;)

Reading your log in a sec.
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
Why do you keep all of those running at the same time and expect good battery life on a stock rom?
[AT&T Samsung Galaxy S II SGH-I777] Deenybird:
The short answer to this question is this: because my last phone could. (iphone 4)

Since I've posted last:

I received the 3500mah extended battery I mentioned earlier (I've only had the battery for 2 full days, so take that into consideration). The back was a little tricky to snap into place, but it's been perfect otherwise, very pleased. I also flashed the iscrewed rom from here.

With this combo I appear to be getting a little less than twice the battery life I was before (which would make sense because I've doubled the battery). As the screenshots show, hard use (with screen on max brightness) gave me 4 hours 10 min with 18% left.

I have done no underclocking (I don't know if it's included with icscrewed) although I would like to experiment with it.

Conclusion: Now this is battery life I can live with. Paired with my 4000mah external battery pack, I no longer fear for my battery even during a day of the hardest use.

Here are pics from the settings app. Screen time on is 2h 56m. CPU spy screenshot. Battery log attached.
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
Lol my iPhone 4 and 4s had worse battery life than my SGS2.
[AT&T Samsung Galaxy S II SGH-I777] tewan:
To each his own.

The guy is obviously a heavy user, and based on how iPhone handles multitasking of course he'd get a bit better life on there than on here.

If you're not a heavy user or know well how to handle your phone, then yes, you'll more than likely get better battery life on this phone than the iPhone doing the same stuff.
[AT&T Samsung Galaxy S II SGH-I777] cfaberlle:
I think he actually falls under the Extreme User category. 4 hours on a 3500mah battery is extreme use :eek:
[AT&T Samsung Galaxy S II SGH-I777] avidmovies:
I think the latest siyah kernal will increase your battery life, but the main battery killer is that display. If you can live with say, 50% brightness, you'll get much better battry life.

Also in JKay, there's an option to set the profile for auto-brightness. Check that out.
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
I don't think screen is his biggest killer. Wifi + GPS + bluetooth sounds like the big killer to me.
[AT&T Samsung Galaxy S II SGH-I777] dandrumheller:
Yeah, except he had his screen on for 3 out of those four hours...
[AT&T Samsung Galaxy S II SGH-I777] tylerdurdin:
The title of this thread should be called "look how fast I can kill a cellphone battery" ......there is not a phone in existence that can handle a full day of that type of usage. When Engaget reviewed the SII they said they played movies on it for 9 hours and I thought that was total BS. On a lazy saturday I can be connected to wifi all day with data troll XDA all day,watch some YouTube videos, download a billion apps to try out and then uninstall. By the end of the day I can have 16 hours up... with 5 and some change hours of screen on...this is hands down one of the best devices on the market for battery life...I couldnt ask for anything more. I would not even think of adding GPS dependent apps to the burden and expect it to deliver anything close to that. A satchel with a car battery will definitely last the day though..;)
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
True, but you have to agree wifi+bluetooth+GPS at the same time could possibly kill more battery, depending on the brightness.

Knowing the OP, 100% :rolleyes:
[AT&T Samsung Galaxy S II SGH-I777] dandrumheller:
Oh yeah, no doubt those things are a major contributor to his insane battery drain. His display usage is far and away his highest cause of drain though, at 76%. Everything else together only accounts for a third as much as his display. Unless some of those other items get reported under display instead of either the individual app or AOS our system?
[AT&T Samsung Galaxy S II SGH-I777] nyamoV2:
does the display always need to be at 100%? i usually keep mine around 30 or so indoors and am happy but to each their own. if you ran 75% with the extended battery you received how much would that help?
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
No way! All or nothing. Gotta have that **** burning bright, just in case a headlight blows out.

Dropping the brightness to 75 or even 50 would make a huge difference.
[AT&T Samsung Galaxy S II SGH-I777] Deenybird:
here's today's pic

As the pic shows, there was a large decline in battery in the beginning, and at the end of the cycle. This correlates to my 2 hour drive up to skiiing using the gps, not using the device for 5 hours of skiing, and then 2 hours of gps on the way home.

11 1/2 hours down to 1%
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
So really it's just 6.5 hours of use? Standby shouldn't consume more than 5% for that period of time unless you have wifi/blutooth/GPS on during that time.
[AT&T Samsung Galaxy S II SGH-I777] Deenybird:
right, forgot to mention:

bluetooth off, wifi off, gps on (for 5 hours), 30% brightness, ~3hr 30 min screen on
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
What battery are you using?
[AT&T Samsung Galaxy S II SGH-I777] JK_the_Slacker:
Have you tried using Llama profiles to help optimize where and when you turn the various radios on? Depending on whether you remember to (for example) turn off wifi when you're at the grocery store and the like, it could make a measurable difference (I'd estimate maybe up to 10%).
[AT&T Samsung Galaxy S II SGH-I777] Deenybird:
this one

i'll look into it. could tasker do the same thing?
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
Something is seriously wrong if you are only getting 3 and a half hours of screen time, at 30%, with a 3500 battery.

That battery, in reality, is probably a 2000 max.
[AT&T Samsung Galaxy S II SGH-I777] JK_the_Slacker:
Theoretically, yes. I just recommend Llama because it's free and it's worked well for me. It bases location solely off the cell towers it sees, which means it doesn't add even more drain to your battery - it piggybacks off what your phone is already doing. It appears that Tasker can also do this with "Cell Near", but I don't know how simple it is to set up. With Llama, you define a location name, then tell it to learn the area (and it will happily learn for anywhere from 1 minute up to 8 hours.)
[AT&T Samsung Galaxy S II SGH-I777] dandrumheller:
I have used tasker with cell near in the past for this and had mixed results...I'm sure due to how I had the profile set up. Time to check out llama. Thanks
[AT&T Samsung Galaxy S II SGH-I777] Deenybird:
today was a day of light use. Barely any gps, wifi on, lots of streaming podcast, 30 min tethering, 30% brightness.

It took 14 hours 4 min to get me down to 13%

3 hours 20 min of 'display on' time

Like others have already mentioned:

I've found that the display itself is by far the largest consumer of battery. GPS eats a little bit, but since the display is on when GPS is in use, it's the display that is doing the damage. Adjusting brightness doesn't seem to add much length. When the display is on, it's chewing through battery.

I've downloaded llama and am setting it up now.
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
You should download better battery stats and look for wakelocks. Not only that, get cpuspy and make sure your phone is going into deep sleep.

You should easily see 20+ hours with that battery and that usage.
[AT&T Samsung Galaxy S II SGH-I777] Hunt3r.j2:
1. Fix partial wakelocks, make sure you only use GPS/BT when you really need it. Shut off WiFi if you aren't actively using it and you have the data plan to support using 3G.

2. Lower brightness if you can, either use autobrightness or turn it down further. Use a wallpaper and UI that is as black as possible to reduce the screen's battery consumption (black pixels in the GS2 don't use power).

3. Make sure your ROM is set up properly and that there are no battery drain bugs (Don't try to "calibrate" your battery, other things that might be brought up in a kernel thread or something similar.)

If you ever have a day when you're at home and you don't need to use your phone, get your stock battery, charge your phone to 100%, install battery monitor widget, and see the average estimated mA drain when your phone is kept with the screen off. If you lose more than 1% every hour, you can increase your battery life.
[AT&T Samsung Galaxy S II SGH-I777] lo-fi_engineer:
Since activation about a week ago, I typically get ~2 days per charge on my stock battery and stock rom. I normally keep wifi on constantly and the screen is just about 40%. No Bluetooth, GPS, or network data. Moderate use with ~30 min of calling, a dozen texts, constantly checking my agenda/reminders, several hours of email, browsing, and trolling the XDA threads per day. Lol

PS love XDA. Easily the most informative forum I belong to.
[AT&T Samsung Galaxy S II SGH-I777] Deenybird:
I get 38% deep sleep in cpu spy.

As for wakelocks, right after the top process 'mediaserver', i get 2. One is from acast, the podcast player that was streaming for much of the time, the other is Maps. I have latitude running.

Not clear on whether these stats are problems or not.
[AT&T Samsung Galaxy S II SGH-I777] skatin707:
Why was latitude running?
[AT&T Samsung Galaxy S II SGH-I777] avidmovies:
Post that info in the known battery drainers thread and see if anything can be optimized. My guess is it can. Even with heavy usage, I usually never get less then 60 percent deep sleep, but our definitions probably don't match, so YMMV.
[Galaxy S II Q&A, Help & Troubleshooting] lacmondragon:
hi all thanks in advance I have a problem and not to do I've been using the rom resurrection and now I've decided to use this rom I see that it handles better than the last, and the only thing that neither this veno works for me is the market tells me I have an error in the server host or timeout, I can not use the data connection and nothing I do not work.

I would like to help me please because this is the only thing that would make me go back to 2.3.6 i had and that they do not want. worked very well this rom.
[Galaxy S II Q&A, Help & Troubleshooting] kanye92:
http://xdaforums.com/showthread.php?t=1436854 has market fix on first page.
[Epic 4G Q&A, Help & Troubleshooting] gooch1025:
So I'm a little confused on this, but if a theme doesn't have 4g, does that mean that you can't toggle 4g on? Would it be the ROM or the theme stopping this, because it says my phone doesn't support 4g with my new setup.
[Epic 4G Q&A, Help & Troubleshooting] ÜBER™:
If there's no toggle means the creator didn't make a png for it but you can always go into wireless and networks and go to the 4g settings ;)
[Epic 4G Q&A, Help & Troubleshooting] gooch1025:
Ok that will have to do. Thanks man.
[Epic 4G Q&A, Help & Troubleshooting] KennyG123:
If you are talking about a TW ROM then yeah, what Biggie said. If it is a CM7 theme the default 4G toggle will still be there.
[HTC Sensation] silverion:
Is there an S-OFF available for HBOOT 1.20? Saw "locked" after flashing 1.20 and S-ONed phone. Finally unlocked using htcdev but nothing I found could help me downgrade HBOOT and do S-OFF again. Do not have SuperCID atm.
[HTC Sensation] tward291:
there is a thread on this your still rooted even though it says s on
[HTC Sensation] silverion:
Yeah, I am still rooted and can get into recovery and flash ROMs. But I am having issues with signal and I cannot flash anything because 1.20 does not support fastboot commands. I would like to downgrade but cannot. I tried flashing the customized p85img.zip with my CID T-MOB010 and it would just return to menu w/o any messages.
[HTC Sensation] xdviper:
Make sure it's p85img in the file name.

Don't INSERT .zip at the end. It should automatically be a .zip file.
[HTC Sensation] silverion:
The file is named correctly.
[HTC Sensation] tward291:
There is a thread here ima try and find it were you can revert back to hboot 1.17.0000
[HTC Sensation] paarry:
i m facinf d same problm wit my sensation with bootloader unlocked thro htc dev. i m unable 2 flash any radios. Even i m unable to flash any custom firmware also. I need ur help if u found any solution.
[HTC Sensation] ilostchild:
either downgrade your hboot to 1.17 or update to ics 3.24 which has hboot 1.27 (unlocked) and you will have advance fastboot commands
[HTC Sensation] Saxman6699:
Same exact problem here, semi-bricked my phone before I went over to Htcdev.... attempting to flash a p85img for HBOOT 1.17 or any p85img does nothing but parse it. Searched all day today couldn't find a thing to help...Others have suggested just waiting until Revolution comes out with an Unlock for 1.20 but I'm determined to find a solution for us.
[HTC Sensation] chetan0205:
I noticed when using widgetlocker under the the said rom and on receiving an incoming call, the call in progress app comes on surpassing the lock screen. I was wondering if there's any way of answering the call right form the lock screen without going straight to the call in progress display.

Your help will be highly appreciated!
[HTC Sensation] nevrlow:
Theres a setting in widget locker forgot where it is its been some time since ive used widgetlocker.
[HTC Inspire 4G] BruteSource:
So I am trying to root a brand new Inspire 4G I picked up last week.

But I can't even get adb access. The driver is not working. I have tried the ones on the SD card, the one from the HTC site, the ones from Google, etc.. I just tried forcing the Google driver after modifying the inf to include the device (something I read to try in another post) And it comes up as an ADB Interface Composite Device, but says I need to restart, and still doesn't work at that point.

I restart and it automatically installs a different driver thats shows up in device driver as " My HTC" with a yellow Exclamation mark.?

I have tried uninstalling Sync and all the drivers asociated with anything to do with the phone in device manager. But it still keeps installing as that "My HTC".

Any suggestions would be greatly appreciated!
[HTC Inspire 4G] pazzo02:
The best, and IMO flawless way to root using Ace Advance Hack Kit is to make a Ubuntu Live CD and run it from Ubuntu. Just too much crap to worry about disabling in Windows.

http://forums.androidcentral.com/in...ads-all-outdated-post1364019.html#post1364019
[HTC Inspire 4G] glevitan:
Have you tried installing the Ace Hack Kit driver?...go to the development forum and find the Advanced Ace Hack Kit...that is the best way to do it. If that driver is not working, you can try using Ubuntu..
[HTC Inspire 4G] BruteSource:
Yea tried the Ace Hack Kit one, no go. Guess ill try in using Ubuntu. Have to setup a USB drive cause I have no discs.
[HTC Inspire 4G] glevitan:
I'm afraid that the hack kit does not work or might fail with USB Ubuntu...maybe try from other PC?
[HTC Inspire 4G] BruteSource:
Ya that's not an option right now. Can't get ubuntu working right now either. There are Linux instructions for the ace hack though.
[HTC Inspire 4G] glevitan:
I guess that your best bet is to wait and try to get a different PC....if not you have great chances of failing.
[HTC Inspire 4G] BruteSource:
Well kind of sucky. I might exchange this phone for the galaxy s ii tomorrow anyways. Hopefully I can root it easier.
[HTC Inspire 4G] glevitan:
The galaxy S II can be rooted with the super one click method....is way too easy....:D
[Droid Eris Q&A, Help & Troubleshooting] drakan290:
So, since I've moved to Europe, my phone is useless. I've been using it as an alarm clock/MP3 player, but it's absolutely horribly laggy even when overclocked, running r32 of KaosFroyo.

I'm looking for the lightest possible build that includes MP3 player and video support, the Alarm Clock function, and long standby times/power management.

I've been out of the scene since KaosFroyo r32 (last time I was stateside with internet access), so I'm literally lost. What should I be looking for?
[Droid Eris Q&A, Help & Troubleshooting] Darca:
I would recommend GSB. Its based on CM7 so its as fast as can be and pretty durn light weight.

http://xdaforums.com/showthread.php?t=944430
[Droid Eris Q&A, Help & Troubleshooting] Super_Dork_42:
That's a good suggestion, but I think, from some private conversations with workshed, he might be making an even lighter ROM with the no 3g script so that it takes basically every feature you don't need away and makes the Eris basically an Android version of the iTouch.
[Droid Eris Q&A, Help & Troubleshooting] Pandasaurus:
I recommend GSB 4.4 ODEX small and the wifi only script.

wifi-only script:

http://xdaforums.com/showthread.php?t=1216571
[Droid Eris Q&A, Help & Troubleshooting] Super_Dork_42:
Yeah that's basically what it will be in the end but even faster and lighter because he will probably take other things that aren't needed out too.
[AT&T Samsung Galaxy S II SGH-I777] alexnoalex:
I have rooted 2.3.6 ROM based on AT&T stock rom. It has 'attwifi' access point which phone tries to connect whenever I walk next to any Starbucks. The problem is that most AT&T access points want me to either login or, at least, click on some stupid check-box in browser. So unless I open browser and do it, I lose my Internet connectivity.

I would like to remove or disable this attwifi access point, but in settings it does not give me any option to do so. I even went as far as trying to remove it from /data/wifi config files but it just gets resurrected.

Does anyone know how to remove or disable this access point?
[AT&T Samsung Galaxy S II SGH-I777] hurley81388:
In wi fi settings there is an option to automatically connect to att wifi network. Uncheck that
[AT&T Samsung Galaxy S II SGH-I777] quarlow:
Also in your wifi settings find the attwifi network, long press, and select forget network. That worked for me, but I'm not on the stock ROM anymore.

Sent from my Galaxy S II (i777)
[AT&T Samsung Galaxy S II SGH-I777] alexnoalex:
Pretty stupid of me! The option to disable auto connect was right in front of me all the time.

Thanks.

It's still would be interesting to know if attwifi can be deleted or changed to regular (forgetable) network. How did they do it, I wonder?
[AT&T Samsung Galaxy S II SGH-I777] twiggums:
you should be able to remove it from the listed access points (ie tell the phone to "forget" it). However I haven't been on the stock rom in a few months now, so i'm not sure how you'd do it. pretty sure if you just go into wifi settings and do a long hold on the access point name it'll give the option to forget it.
[AT&T Samsung Galaxy S II SGH-I777] brent8577:
I will probably disable mine as well. I noticed it come on in the McDonald's drive through, then nothing was loading.
[Captivate Q&A, Help & Troubleshooting] sevengun16:
I have rooted my cappy 2.2 using superoneclick but the enable non-market apps keep saying FAILED every time I want to enable it. Should I try out a different version of superoneclick?

side note: I have rebooted my phone before I attempted enable non-market apps button
[Captivate Q&A, Help & Troubleshooting] dheeraj (dhlalit11):
just download one click odin gingerbread firmware with bootloader and upgrade the device to gingerbread you will get the option in development setting and if you don't want to upgrade then reply to this thread i will give ypu another method
[Captivate Q&A, Help & Troubleshooting] studacris:
Like said above, Just upgrade your os...gingerbread is official now... Dunno why you would still wanna run a now 2 generation old version of Android.

But..if you have your heart set on froyo..i believe the latest 2.2 firmware, kb2, has that option included in it.