yashsingh1/xdaforums huggingface dataset:
[Desire HD Q&A, Help & Troubleshooting] zelendel:
Its the way cm shuts the data off. Most sense bases roms are set to only **** off the internet part of the apn while cm based roms diablebit all together. I mentioned it and it was stated that it was supposed to work like this.
[Desire HD Q&A, Help & Troubleshooting] Jaquez09:
OK, gotcha. I appreciate the info.
[EVO 4G Q&A, Help & Troubleshooting] xlarkascendingx:
I have the EVO 4G (obviously), it is flashed to Cricket. I have been trying different radios to try and get a better signal. I've been using AMON because CW didn't seem to make the radios stay. I tried EVO_Radio_2.15.00.04.08 and it went through the process of updating, then a blue folder popped up, the phone shut off and now it won't turn on at all. I'm sure it's eff'ed, but if anyone has any help don't hesitate to post. Thank you.
[EVO 4G Q&A, Help & Troubleshooting] Notorious:
How much battery did you have when you attempted the radio flash because I have a feeling the phone ran our if battery during it?
[EVO 4G Q&A, Help & Troubleshooting] xlarkascendingx:
At least 50 percent. I think AMON just ****ed up or something. I'm sure it's bricked, there's no other explanation. Pretty sweet too because I just got this thing 3 days ago.
[EVO 4G Q&A, Help & Troubleshooting] cesarcerros31:
Well last resort is if you can load bootloader but seeing you can't turn on at all you have an expensive brick you can return to sprint

sent from my HTC evolution running a freshly baked gingerbread with the 4gs in it
[EVO 4G Q&A, Help & Troubleshooting] xlarkascendingx:
<<------- lol
[Samsung Galaxy S (4G Model)] Zixx:
I was Just reading an article online that mention this Bluestascks program and i thought well we all could use it since i mean who haven't want to play an android game on our own pcs every now and then

http://bluestacks.com/home.php

here ya go, as Im about to test it myself as well
[Samsung Galaxy S (4G Model)] steeleain:
Thanks zixx, I heard about this and wanted to try it out.
[Samsung Galaxy S (4G Model)] Zixx:
No problem , how did it work for ya?

Sent from my SGH-T959V
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
What is the deal with this phone? The battery life is not very good at all. I came from a phone that had a 1150 battery and this one has 1600! I am getting almost identical battery life as my old phone. I am running a fully debloated rom at stock clocks with the display turned all the way down and can HARDLY make it through an 8 hour work day. I've narrowed it down to the screen.

I remember reading about amoled when it was first announced and they said it would consume significantly less power than any other display technology. I'm starting to second guess this.

Its either the screen or the dual core processor that's draining this decent sized battery so fast.
[AT&T Samsung Galaxy S II SGH-I777] bustabo:
I've been getting 12 hours on batter with almost 6 hours screen on time. Heavy usage. Every day. Better than my iPhone 4.

Sent from my SAMSUNG-SGH-I777 Cognition
[AT&T Samsung Galaxy S II SGH-I777] pukemon:
Amoled does. From what ive beem read ing super amoled plus.is alot better. The darker the better. Slcd is.a.good option for battery mizers though.

I voided my warranty and your mum.
[AT&T Samsung Galaxy S II SGH-I777] desiromeo719:
Yes ive also read that the way super amoled plus works, is there is no backlight and individual pixels light up, so its better to have simple wallpapers with mostly black, would probably give you better battery life, as most of the screen will no be using any energy.
[AT&T Samsung Galaxy S II SGH-I777] akira02rex:
All android devices murder their batteries. It's nothing new get over it lol.

This device gets decent battery life considering it's the most powerful option out currently though.

The general masses do not understand how to set these phones up for optimal battery life. There are threads all over XDA on how to do this.
[AT&T Samsung Galaxy S II SGH-I777] roadrash7:
This phone for android is probably the best or near best in its class. I am impressed. Its better than my captivate was. I can get through 15 hour days with heavy use all the time with average of 4 hours screen time and i listen to a lot of music when the screen is off. This phone rocks i dont even see the need for a extended battery
[AT&T Samsung Galaxy S II SGH-I777] TOA Duck:
Every app i use i set on black theme. Wallpaper black. Display all the way down unless IM out side or watching a movie. I get 12hrs plus using gtg's rom.
[AT&T Samsung Galaxy S II SGH-I777] Dxtra:
I have no idea what you do with your phone or what . But I get more then enough battery with this phone, I do it all text talk surf web forums play and I make it home with enough battery to probably lend you some. Seriously we all know your not going to get iPhone battery life obviously the iPhone it just plain simple. But come on, this type of thread it's getting annoying there's a few already with help and tips on your issue search for them. Maybe you just got high hopes, or maybe it's not the phone it's you. BTW Amoled probably consume less battery but not enough for us power hungry users to see a different.
[AT&T Samsung Galaxy S II SGH-I777] LGSilva:
I don't think is the screen alone itself but the dual-core running at 1.2Ghz might eat more battery than your old phone with an smaller battery
[AT&T Samsung Galaxy S II SGH-I777] dandrumheller:
You might want to install CPUSpy and BetterBatteryStats (BBS) so you can better diagnose where your battery issues are coming from. 8 hours seems very poor for this device. Use CPUSpy to see how much your device is running in deep sleep - with light usage I usually see around 80% deep sleep. You can use BBS to look for apps causing excessive wakelocks (BBS is available here on xda) to see if a particular app is causing the problem.

Unless you have a hardware problem, I don't think the display is your problem - the display on this device has a smaller percentage hit on battery use than my 3.2" LCD Aria.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
I'm lucky to see 3 hours of screen on time with MODERATE. Usage.

You are either lying or my phone needs to be warrantied.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
Again since I am unable to recreate these results I'm gonna have to go with my phone is defective.
[AT&T Samsung Galaxy S II SGH-I777] Entropy512:
Yet you've completely ignored people who have told you to get CPUSpy and BetterBatteryStats to figure out what's keeping your phone awake.

Most likely your phone is not defective, but you've installed an app that's hogging the battery or set up a configuration option that kills it, such as:

Hotmail calendar sync is known to cause massive battery drain due to a Hotmail server side bug

Some Exchange servers are misconfigured and cause major battery drain

Skype is a battery-hogging nightmare. If you absolutely have to use Skype, make sure to take it out with a task killer when you're done with it.

I haven't really pushed my device with screen-on time, however what are your idle battery drain statistics? If you have drain more than 2-3% per hour when the phone is idle (such as overnight), something is very wrong. You should be getting drain on the order of 1% an hour if you leave the phone overnight in moderate signal.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
I havent ignored anyone. You assume that because I haven't responded to such comments that I haven't tried them. I frequently use cpuspy to make sure my phone is sleeping and I use bbs as well.

I'll leave the phone off the charger overnight to check it out though.

This still doesn't change the fact that HEAVY useage at 5+ hours of screen on time is absurd.

I am also planning to experiment with airplane mode and using only wifi tomorrow.
[AT&T Samsung Galaxy S II SGH-I777] Entropy512:
Make sure to do the following to get the most accurate data:

Top off to 100% (to the point you get the full-charged notification)

Remove from charger

Reset timers in CPUspy

Put phone down and go to bed
[AT&T Samsung Galaxy S II SGH-I777] dandrumheller:
I'm not sure why you say 5 hour screen on time with heavy usage is absurd? Are you thinking that isn't possible with this device?
[AT&T Samsung Galaxy S II SGH-I777] nytvd:
+me, amazing battery life w/the SGS2
[AT&T Samsung Galaxy S II SGH-I777] krips2003:
You can still exchange with a new one under 14 days or 30 days. 6 hours with screen on is not absurd on this phone in 12 hours. I have been with screen on with 2:45 hrs and voice with 45 min in 1 day and 8hrs with still 15+ % battery juice left.
[AT&T Samsung Galaxy S II SGH-I777] foxbat121:
IIRC, one of the review or comparison against iPhone4S benchmarked GS2 as 5 to 6 hours of internet browsing which means both screen on and using data. Wi-fi gives it a slightly longer battery life than cell data. Unfortunately, it didn't benchmark video playback time. iPhone4S spec says 8 hours of video. I hope GS2 is close to that. This is play video from local storage, not streaming. So, the data connection battery draw is out of picture. I managed to get 4+ hours of video playback with flight mode on with my old Captivate. Hopefully, GS2 will last longer, e.g. survive a coast to coast flight while still have some juice left for navigation.
[AT&T Samsung Galaxy S II SGH-I777] gtg465x:
He's not lying. I have seen 5 hours of screen on time and still had a little juice left at the end of 16 hour days. And it wasn't a one time deal. Seen it several times, though I usually don't use my phone that heavily. Yesterday I barely used my phone at all and was only down to like 85% after 16 hours.
[AT&T Samsung Galaxy S II SGH-I777] dandrumheller:
I saw a review when looking at this device, I think it was on engadget, where they did a full to empty video playback run, and got 9.5 hours. I don't know what the other conditions of the test were though.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
Well that will have to be tomorrow night lol

Last night I idled away 9% in 6 hours.

Will retest tonight.

**edit**

I couldn't get the damn phone to 100% last night because it takes FOREVER to charge. Literally like 3 hours to charge fully. Maybe more.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
Yes I'm thinking it isn't possible.

Maybe my definition of heavy usage differs from others.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
I'm going all out today.

No GPS. Airplane mode. No latitude.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
Every hour of 'on battery' time I will be posting a screenshot of my battery usage as well as display on time.

**Edit**

Actually I'm going to repost everytime I lose 10%.
[AT&T Samsung Galaxy S II SGH-I777] drunkenmastera:
this phone has really good batteries, under heavy use, 40% at end of work day. Otherwise, 70%.

This is with screen on auto.
[AT&T Samsung Galaxy S II SGH-I777] bustabo:
Why would I lie?

Did u factory reset? My phone had horrible bat life till I reset then flashed cog b4

Sent from my SAMSUNG-SGH-I777 Cognition
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
I wiped everything, wiped cache, then wiped dalivik.

As you can see in my next post, I burned 10% with 40 min of screen on time.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
First 10% gone.
[AT&T Samsung Galaxy S II SGH-I777] jflexe99:
Yesterday I used the phone for normal texting a phone call, gaming and little web surfing. After 12 hours I still had 55% battery. The HTC would be hitting 30% or so...that was about 9pm...so I would want to charge the HTC, but witht the GS2, no worries! Awesome battery!
[AT&T Samsung Galaxy S II SGH-I777] Dxtra:
Dude I already see one of your problems " latitude " Like I said there's nothing wrong with your phone it's how you use it and what you got it doing. Like my friend the other day "Damn d my battery life sucks on my infuse " I took a look at his phone. He had emails synchronizing every 15 mins, a live wallpaper, Facebook sync every 30 , also words with friends every 15 mins , his weather clock sync every hours. In top of all that log in to Skype and some other stuff running. Really? I told him carry a charger. There's nothing wrong with doing all that, that's what smart phone are made for, but seriously don't blame the phone for crappy battery. What do you expect. BTW using GPS for navigation or constant location polling will kill your battery fast no matter what OS, phone ect.
[AT&T Samsung Galaxy S II SGH-I777] dandrumheller:
If 40min screen on uses 10% battery, then mathematically 400min screen on would use 100% battery (I realize this does not account for other variables). 400 minutes of screen on is 6hrs 40min. 6 hours and 40 minutes of screen on time is heavy use in my book. Just sayin'
[AT&T Samsung Galaxy S II SGH-I777] foxbat121:
'Latitude' has always been a battery hog on every phone I've tried on.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
I know Haha! I did this math in my head on the way to work and was like WTF!?

Looks like we will find out why I have only been able to pull 3 hours screen on time. Airplane mode and disabling GPS should tell us a lot.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
That's funny because I did a lot of research and read articles by Google engineers and they said it's supposed to consume almost no battery life. I just started using latitude with this phone and none of my previous ones. I researched the battery thing before I decoded to enable it.

Are we sure it drains battery?
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
By the way I'm at 86% right now :P
[AT&T Samsung Galaxy S II SGH-I777] foxbat121:
I'm 100% sure in my case. Google engineers probably did that estimation using 2G data connection where battery consumption isn't a big deal.

Any time you need send or receive data frequently, even a small amount, it uses battery quite a bit more. Your phone has to keep waking up, caculate your location based on current cell tower information and send the update to the google server. There is no way it is not using a lot of juice.
[AT&T Samsung Galaxy S II SGH-I777] dandrumheller:
Yeah I don't use lattitude because of its' battery burn.

There is an app in the android app forum here on xda that is designed to minimize the battery footprint of lattitude. I have only briefly skimmed the thread, and have not tried the app, but you might want to look into it. I think it's called ALTitude or something like that iirc.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
What about when I'm on wifi? Wont it grab the coordinates through wifi rather than cell signal? I can definitely use GPS functions while in airplane mode using wifi.
[AT&T Samsung Galaxy S II SGH-I777] foxbat121:
wifi gives you more accurate location than cell tower but your phone still needs to wake up often to update the location and transmit data over wifi which also use battery (slightly less than cell data) instead of in deep sleep. By default, Latitude won't use GPS when it is in background, e.g. GMap is not open. But using GPS will cause even more battery drain, more so than wifi or cell tower triangulation. That's why when latitude is running at the background, it does not use GPS at all.
[AT&T Samsung Galaxy S II SGH-I777] roadrash7:
I can get 5 hours screen time pretty easy. With heavy use all day with data and sync always on. I actually have a picture showing it in another post.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
80%
[AT&T Samsung Galaxy S II SGH-I777] foxbat121:
A picture is worth thousands of words. Attached is a screen cap I took after enable Latitude for the last hour. You can see the obvious battery drain there.
[AT&T Samsung Galaxy S II SGH-I777] :
Whats with your phone signal? Thats what probably eating up your battery... you phone is probably constantly looking for a signal.

Edit: DUH! Airplane mode.

Edit x2: 2.5 hours and you've only lost 20%? Thats 12.5 hours of battery life total (at this rate)... coupled with 1 hour and 10 minutes for that 2.5 hours... thats 5 hours and 50 miutes of on screen time for the total of 12.5 hours of constant use that you're putting your phone through. Seems about on par to me.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
Right but I'm running my phone significantly different than when I had the drain complaints. Its looking much better now.

I will follow up with multiple days like this enabling one feature at a time for comparison.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
Is that the little dip you can see at the end of the graph?
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
70%
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
60%
[AT&T Samsung Galaxy S II SGH-I777] thenapalm:
I got the SG2 last friday as my first android device. I think the battery is so-so but that's just based on my last phone that could go a week between charges.

As you can see, I'm a very light user but after 8.5 hours it's still at 93%. Running stock rom, non-rooted.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
50%
[AT&T Samsung Galaxy S II SGH-I777] MikeyMike01:
3 hours screen time is not moderate usage.

Sent from my SGH-i777
[AT&T Samsung Galaxy S II SGH-I777] :
Your still getting 3 hours for 50%, so thats 6 hours of screen on time.

I noticed that after using my phone normally for a total of 7 days, my battery must have calibrated. I use my phone the same way every day and in just the past week, Ive gained about a 20% increase of life. Perhaps your phone just needs to learn your habbits and then calibrate?
[AT&T Samsung Galaxy S II SGH-I777] foxbat121:
Correct. You can see positively Latitude has noticable impact on battery life.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
My battery is calibrated.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
At this point I've already determined that my battery life was fixed by disabling one of the previously mensioned items. I'm just posting these for fun now :)
[AT&T Samsung Galaxy S II SGH-I777] :
Im guessing Latitude...
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
40%

This thing is hanging tough!
[AT&T Samsung Galaxy S II SGH-I777] akira02rex:
You're definitely a power user compared to me. I usually get 15-20 hours from mine. You should try rooting and using entropys kernel and set CPU to underclock and undervolt at certain points with profiles.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
I'm pretty sure the cog rom comes with entrophys kernel and I have setcpu set to on demand.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
30%

I only have 2 hours to kill this sucker! I can always kill my phones before the end of the work day! Opening words with friends after this post. I'm sure there's at least 5 moves to make in there :)
[AT&T Samsung Galaxy S II SGH-I777] akira02rex:
How are you killing it that fast? You must be using it constantly obviously LOL.

Use setcpu and set screen off profile with conservative and 200-500mhz. Then undervolt the lower frequencies by -25mv
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
I was under the impression that clock speeds are always at minimum unless needed. Its not like they are sitting there spinning at 800mhz while the screen is off.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
20%

Words with friends is no joke. It killed 10% in about 10 minutes. I may actually uninstall it and only make my moves at the end of the night on my tablet.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
Wow I have to go back and edit all the screen uploads...
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
10%
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
I guess I did almost make it to 5. Hmm.

Also I used words with friends today for only 15 minutes and it was able to take out 7% of the entire battery. Whew what a hog.
[AT&T Samsung Galaxy S II SGH-I777] akira02rex:
Depends. You're using traditional ondemand which is a little aggressive. If you have syncing in the background your clock could shoot up. Play it safe and use set CPU until we can use smartass governor.
[AT&T Samsung Galaxy S II SGH-I777] Entropy512:
Or use the conservative governor - it can be tuned to provide better battery than ondemand without providing too much lag now. (It was impossible to properly tune it before I commited netarchy's patch which greatly reduces the minimum polling interval.) It will cause some UI lag though - I'm far more lag-tolerant than most other people are, I've never had anywhere close to enough lag to bother me.

Don't expect smartass from me for a long time - every time I've seen someone implement a custom governor it seems to come with lots of weird bugs - frequencies not used, other frequencies being used way too much, somehow managing to combine both horrible lagginess AND bad battery life...
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
Thanks for the info.
[AT&T Samsung Galaxy S II SGH-I777] seh6183:
This thread will be an awesome piece of reference for me in the future when diagnosing and comparing battery stats. Other than that I don't see any reason to continue posting in it unless people have questions.

It was fun guys!
[AT&T Samsung Galaxy S II SGH-I777] Colton127:
I just wanted to add: The Super AMOLED screen in the Galaxy S II does not "murder" the battery. It makes it much better.

Download a completely black image and view it in your gallery. Click in the middle of it so the UI disappears and you're left with a black image. Now hit the lock button. See a difference? Nope.

There are no backlights, individual pixels are lit based on how much is required. This is why blacks have absolutely no light under them.

This saves battery life, improving it very very much.

Enjoy.
[AT&T Samsung Galaxy S II SGH-I777] ferrocene:
I just want to chime in here. While oleds do work this way, the screen isn't pure black. I'm typing this from a pitch black room at 2am and the screen at full blackness definitely has a faint glow. Additionally, the glow is really splotchy and uneven...hard to describe. Almost like glue reside sandwiched between glass or something. I have the touch key lights off completely.

In a dark room at night, install screen filter from the market and set it to 10%. You will see the splotches even on white backgrounds. It takes a few minutes for your eyes to adjust to 10%.

This is confusing because black oleds should be off, but there is a tiny glow of light emitted. Impossible to see during the day.

Its kind of fascinating, really. Oh and screen filter is awesome, at 10% I get a dozens of hours of screen time per charge. I'll see if I can get a screenshot. Another bonus for oleds!

There is also another program that can set your display to a monochromatic color,like all red. This only activates the red subpixels, saving even more power. Can't do that with LCD.
[AT&T Samsung Galaxy S II SGH-I777] omgabunny:
Doesn't this disable deep sleep when screen is off?
[AT&T Samsung Galaxy S II SGH-I777] akira02rex:
You may be correct. I'm going to disable my screen off profile and test it.
[AT&T Samsung Galaxy S II SGH-I777] Entropy512:
No, but it can cause crashes if you are running a kernel without the SoD fix.

Setting a screen-off profile with a frequency limit lower than 800 MHz will likely cause SoDs on stock kernels and probably also codeworkx's CWM kernel.
[AT&T Samsung Galaxy S II SGH-I777] omgabunny:
I checked CPU spy after setting a screen off profile and just checked it only a minute. Stayed at 200mhz with no time in deep sleep. I will test it with a longer time frame.
[AT&T Samsung Galaxy S II SGH-I777] omgabunny:
Correction, checked CPU spy after 10 minutes with a screen off profile and the majority of its state was deep sleep. Entropy, should I expect SoD problems with screen off profile running your 10/9 experimental kernel?
[AT&T Samsung Galaxy S II SGH-I777] akira02rex:
What's "SoD"?
[AT&T Samsung Galaxy S II SGH-I777] omgabunny:
SoD is screen of death
[AT&T Samsung Galaxy S II SGH-I777] Entropy512:
No, the fix for it is one of the first things I pulled in.

Not correct - it's sleep of death. When you put the device to sleep and it's impossible to wake it again without a battery pull or long power press.
[AT&T Samsung Galaxy S II SGH-I777] bustabo:
Sent from my SAMSUNG-SGH-I777 Cognition
[AT&T Samsung Galaxy S II SGH-I777] Entropy512:
That's some pretty heavy screen-on usage.