yashsingh1/xdaforums huggingface dataset:
[Galaxy S II General] sasifilb:
24 hours sound quiet reasonable for me, i wrote here since ppl were saying first that its lasting 5 hours.

How about if you Skype or TANGO. or whatever qik, did anybody try those?

I really dont want an IPhone but does anybody think that Skype will have video calling soon on Android?.

I am worried when i go to the marketplace i read that many apps have bad reviews and that iOS apps are better. if i am gonna pay 550euro, i would really like to know, Is Android so bad or do people simply nag too much ?

SG2 looks awesome. but can it upload pics to Facebook/make a video call/ tweet and check emails and seriously post on whatsapp, without dying ever 4 hours which many are posting here- that what worries me :D

is android like Symbian? or IOS closer to Symbian?

Please dont say am a troll! am trying to resist the big evil here aka Apple the chinese killer :)
[Galaxy S II General] bilboa1:
Compared to N95: slightly worse, but different usage (the N95 is quite limited). when you have proper web browsing you start to use it and battery goes down quickly

Video calling: it supports standard video calling (compatible with the N95) but also through internet via other software, Skype doesn't support it yet afaik.

The most important thing on android is:

don't install all the apps u see, specially, qik, skype, tango, whatsapp and all the clones

each of these app keep running the background and polls for data ALL THE TIME. That's what kills the battery.
[Galaxy S II General] Mittaa:
Did you read this part from your link?:

"It is important to condition (fully discharge and then fully charge) the LION Laptop Battery every two to three weeks. Failure to do so may significantly shorten the battery's life (this does not apply to Li-ion batteries, which do not require conditioning). To discharge, simply run the device under the battery's power until it shuts down or until you get a low battery warning."
[Galaxy S II General] skaif:
I have had my gs2 since last weds and it currently only lasts around 9hrs of use....thats a good few hours browsing (2-3 hrs), whatsapp on 3g all the time, occasional wifi and bluetooth with around an hrs call and a few texts thrown in for good measure and topped off with around an hrs music. considering the amount of usage i get i would say reasonable, room for improvement!

my display is usually around 75% and i have noticed the wifi share usage, putting this down to kies app...

My phone died on me today around 6pm after being discharged since 9am and is currently off and charging through the wall socket...(gives me time to play with the forgotten hero :))

but to my main reason for posting

ok this thread is a sticky so people are coming here for answers!!

All i have now is confusion...

do i fully charge and discharge my battery or let it go low then charge it? i appreciate there are differing views but can we come to some sort of agreement and then have it posted on the OP so the people can actually do the right thing?!

think this would help the community and would definitely help me!

Thanks for reading, was a bit long but i felt like joining in!
[Galaxy S II General] bilboa1:
There no view or agreement on this. it's like asking if fire burn, or doesn't burn. It does burn. Also called a fact.

With this battery technology and its what equip 100% of the devices since a few years, you do NOT want it to completely discharge, it damage the battery and it is NOT fixable.

The phone WILL shutdown to prevent damage, but if you manage to keep the drain (download screen) it WILL damage it.

And regardless, the battery will NOT gain ANY "additional time" by discharging it.

The initial discharge is ONLY for calibration, so that the battery % meter is correct. That is ALL.

There's been a lot of confusion about this because of the old ni-cads and friends and because you're advised to discharge the phone the first time, one may be led to think that it helps. Once again, that's only calibration. Nothing else.

If you're going to store the phone and shut it down for a long period of time, or have the battery removed, leave it at around 50% battery (if you leave it 6mo for example, although that will prolly happen to no one..)

Hope that's clear ;-)
[Galaxy S II General] skaif:
ok doke, that makes more sense! thanks bilboa

So i jus need to charge the phone whenever it asks me to? lol, how simple does that sound?!

glad we have some clarification, but does every1 now agree? if so, stick it in the OP and let the rest of us continue to debate and post our Battery Usage Stats :)
[Galaxy S II General] sasifilb:
Oh my god 9 hours, but u use it a lot. i mean i would keep it charged if i am home. how long it is lasting on standby without any use, of course connected. That would be interesting to know.

I think i have to get out of the mentality of the old nokia phones were batteries lasted 3 days or 4 even :D The new world is so advanced for a guy with N95, good though to know that evil apple is not better in battery use. I always thought they will win on that side.

so you people wanna tell me that customizing a phone can actually affect life of battery, hell must be hard to get the perfect customizing but maybe after all the concept is personal. Now how long does Samsung says a battery will last in their marketing specs list?

thnks for sharing your detail. so waiting for the release here in Finland 13.05.2011 am gonna go play with it first. how is the mail functionality if you an exchange account and a gmail, will they combine and make a mess if you add them in the messaging of the phone? sorry if asking too much :D
[Galaxy S II General] skaif:
Yea i dint go into work today so was on it constantly! its hard to put down trust me, i forgot to mention that i played some PES2011 aswell so i spose 9 hrs is good!! i think on an average day wen at work i can get 14 -16hrs, i charge every night regardless so as long as i can get that much battery with as much usage as i get then its ok! :)

As for the old nokias, my mum has one and it goes for weeks!! but u wont get that with android, my hero was around 12-14 hrs so the sgs2 is looking good, i did notice that on standby it loses very little, maybe 1% every few hrs but i havnt left it alone long enough! you also gotta make sure u dont have any apps running in the background, that kies app is getting uninstalled first thing tmo!! i will always have whatsapp, 3g n such running but i think it will eventually last one of my days :)

Mailing is fine, u can add multiple accounts and have them in one app so u shudnt worry about that ;)

As for customizing, with my hero i got waaay better battery life, the dev scene here is jus a few weeks old and look what we have so only good things can come! cant wait for this journey to really begin!!
[Galaxy S II General] tameracingdriver:
Well, I am pretty disappointed in the battery life... when I say pretty disappointed I mean very disappointed.

Less than 3 hours of screen on use today, a bit of surfing, couple of photos, texts and thats about it, and battery was completely drained. Then tonight, it drained 38% in two and a half hours while in standby. It looked as though the Android OS process was creeping up.

Juice Defender didn't help.

Power Tutor seemed to be draining too so I took that off.

A restart seems to have stabilised, but I'm going to restart at least twice a day at this rate.

But then I'm wondering if I damaged the battery after I read a post above, as I let the battery drain last night, device turned off, and when I plugged in I briefly got a battery symbol and exclamation mark before it then started charging.

Hope this gets a solution soon. Not the iPhone 4 level battery life that I was led to believe. In the first couple of days though, it was good, so I don't understand what's happened.
[Galaxy S II General] tjtj4444:
But the phone is turned off before the battery is out, so you cannot really drain the battery by using the phone.
[Galaxy S II General] dk206:
Urgh ...really hoped the numpties wouldn't follow on from the sgs to the Sgs II forum... looks like it...

Swyped from my GT-I9100 using XDA App
[Galaxy S II General] tameracingdriver:
Dunno if that was directed at me, but if it was, I make no apologies for being frustrated again with a rather expensive device having a fault...

But it looks as though it is a software fault of some description so I guess it will be fixed.

Back on topic, my battery hasn't budged since I restarted, whereas it was losing about 1% every 3 minutes on standby before.
[Galaxy S II General] cmd512:
Keep in mind guys, the SGS stock battery performance was horrific as well. But, after custom kernels were released, battery life improved significantly.

So, just hang tight, if there are any battery drain issues, I'm almost certain they will be addressed.
[Galaxy S II General] DocRambone:
Only fix will come from google as the 2.3.3 code has a flaw
[Galaxy S II General] cmd512:
Interesting, care to shed some light on this flaw?

BTW, looking forward to seeing some Doc ROMs for my SGSII. :D
[Galaxy S II General] RyanZA:
There are battery drain bugs - not really issues. Many (maybe most?) people have very good battery life, at least comparable to any other Android out there. It's generally well over 24 hours on a charge for typical usage. (ie. not watching HD moves all day. ;) )
[Galaxy S II General] hazem77:
One funny thing just happens on my sii,

It is plugged in charger and battery indicator was at 94%.

I downloaded some applications from market and after 20 minutes, although still in charger battery was 89!!!

Is this something normal! Never faced such an issue
[Galaxy S II General] cmd512:
Bugs/issues... semantics. Bottom line is, my SGS out of the box did have battery drain. Whether it was the WIFI bug/issue or whatever, subsequent custom kernels/ROMS fixed the issue right up.

Right now, my SGS easily has over 50% battery life after a busy day of pushing work E-mails and constant use.

The point is, hang in there. Unless it's some inherent issue with the hardware (highly doubtful), anything else will be resolved over time.
[Galaxy S II General] DocRambone:
http://code.google.com/p/android/issues/detail?id=15057

And a fix on the way in 2.3.4:

http://www.google.com/support/forum/p/Google+Mobile/thread?tid=3812c1acf93b482f&hl=en

"- Battery life: some users let us know that their batteries didn’t seem to be lasting as long; battery life should be improved for these folks. (Nexus One)"
[Galaxy S II General] cmd512:
Dunno, looks like it's 95% discussion on WIFI. And, you know full well SGS had a ton of WIFI related battery drain issues as well... ;)

Yep, 2.3.4 was announced at Google I/O, should resolve some of the issues.
[Galaxy S II General] pet family:
For the past 6 days, which is also 6 charge cycle, I got around 12-17hours. The one with only 12 hours was the day I played some game for quite some time, still less than 1 hour game though.

Never use Kies, but wifi sharing is still there everytime like others. Display is always the biggest percentage in draining the battery according to the battery usage stats, usually followed by Android OS and Android System. However, based on power tutor (which I uninstalled already since it looks like to drain quite some battery life) my Seesmic with 30mnts sync is the highest battery drainer.

I'll try to uninstall Lookout tomorrow, probably it will give more life to the battery.

Looks like I'm still lucky with this battery life, although would like to see some figure such as 1.5day :D

Don't really understand why others could get only 9hours less, bug attacks randomly? Haha lame guess..
[Galaxy S II General] tameracingdriver:
So wifi sharing causes battery drain, and it seems as you say a lot of the discussion there is about wifi, could be just a coincidence but its starting to look like a pattern?
[Galaxy S II General] cmd512:
Well, most of the discussion from the link Doc posted has to do with the WIFI sleep policy. Mine is on "Never" and I actively turn off WIFI when it's not in use, maybe that's why I'm not seeing the battery drain some folks are seeing.

But yeah, like I posted before, the WIFI sharing service has got me baffled. I don't have mobile AP turned on, but yet it's constantly running. That doesn't sit well with me one bit... :confused:
[Galaxy S II General] simonk83:
http://xdaforums.com/showpost.php?p=13664498&postcount=85
[Galaxy S II General] jonrwg:
Damn, I think I want to ask for an exchange. :D
[Galaxy S II General] cmd512:
This somewhat confirms the issue I saw with idle states from my previous post:

http://xdaforums.com/showpost.php?p=13641553&postcount=309

The app "Alarm Klock" works flawlessly on my SGS with 2.2.1. However, on the SGSII with 2.3.3, it will cause the screen to continuously stay on if it is running in the background if the screen timeout is set to 1 minute or longer. Once Alarm Klock is shutdown and the service isn't running, screen timeout returns to normal.

Been in discussion with the creator of Alarm Klock, and he confirmed all of the timers in the app should NOT reset the idle time-out state, but on Ginger 2.3.3, it seems to. Therefore, I agree with your post, something is seriously wrong with Ginger 2.3.3 triggering idle states properly, which I also think will be addressed in subsequent updates.
[Galaxy S II General] intruda119:
Im getting great battery life. With sync on, 3g/H/H+ on all day, while listening to music 9-4 and im at 64%. Browsed all my favorite desktop sites, showed off some 1080p movies to coworkers, 30mins worth of calls and some texting/emails.

I cant speak for others but the only thing that drains the battery quickly is the browser.

I was trying to kill my battery last night. It was at 1% for an 1hr 20mins. While at 1% I watched 40mins of youtube videos, played a round of shrek cart, and finally died when I was typing a similar message in this thread last night. I have frozen a lot of apps through titanium backup but it wasnt for battery life.
[Galaxy S II General] jonrwg:
Impressive. Mind to tell what is your battery usage is? Check in setting>about phone>battery usage
[Galaxy S II General] pet family:
:D

So how long in total your battery last for?

But that really is a very high usage! :rolleyes:
[Galaxy S II General] Guitarfreak26:
I get 10 hours if im lucky....

Thats with a bit of browsing, 30 min syncing of plume twitter and my screen on 0% brightness

display is using 50% of battery life? its only been on 4 hours
[Galaxy S II General] intruda119:
I unplugged at 6:30am this mourning and is now 5:40 and im at 62% now. Im still in the playing phase with the phone but with normal/heavy use I get to end of 2nd day. Im about to start using Logmein again and see how good that works.
[Galaxy S II General] RogerPodacter:
i am an android fanboy, but i do have the opinion that is highly controversial which is the iphone 4 does indeed have superior battery life over any android phone. the first few iphones were poor battery. but the iphone 4 is superb based on the tests i've done. for example 30 minutes of web browsing screen on time, the iphone 4 will only lose 2-3% total. but the average android phone will lose 10% or more in 30 minutes.

of course many will disagree, i accept that. like i said, i'm anti apple and pro android. but its just the results i've seen!
[Galaxy S II General] intruda119:
I agree about the apple. My fiance has an iphone 4 and gets great battery life. She can go 2-3 days between charges. She either streams Slacker radio, or watch movies all day at work(8-3). She uses facebook alot and some web browsing during the day and is never searching for a charger.

Our recent vacation proved that my sgs sucked at battery life. Both using gps, while searching the web for locatiions by 5pm I was getting battery life warnings.
[Galaxy S II General] OdieS:
I have done a search of this thread but didn't see any questions/answers about this:

Does anyone know why Maps is using quite a large percentage of the battery (10-15%+ per day on average) when not being used? It has been in the top 4 usage details for the past few days for me and I have tried rebooting the phone, I haven't even opened Google Maps in the past couple of days but it still seems to be using quite a bit of battery power.

I have Latitude enabled, but I have done the same on previous phones (Desire HD, Nexus One) too without this sort of strange battery usage behaviour.

Does anyone have any ideas? The battery life I have gotten has still been fantastic (regularly 20-30 hours), but it would be great to find a fix for this and squeeze an extra 2 hours of life out of the phone!
[Galaxy S II General] dk206:
I don't think I've ever had wifi sharing appearing in my list. have you guys activated kies air?

Swyped from my GT-I9100 using XDA App
[Galaxy S II General] cmd512:
Settings -> Applications -> Running Services. Scroll down. WIFI Sharing and WIFI Sharing Manager aren't running? They should be out of the box.

I've frozen them with Titanium Backup, no side effects from what I can tell.
[Galaxy S II General] NIK516:
do you need root for titanium backup?

And with root can i update to 2.3.4
[Galaxy S II General] cmd512:
Yes to both.
[Galaxy S II General] Bajaj_86:
Hi, this is my second charged.

Can somebody please tell me about this battery life?

Thanks
[Galaxy S II General] RyanZA:
Your screen was on almost permanently, which is very far from normal phone usage, so it's hard to compare with other people's battery life that easily.

It depends what tasks you were doing - if you were playing 3d games the whole time then it would rate as pretty good. ;)
[Galaxy S II General] tameracingdriver:
I've had to go back to my incredible s now, as the battery life was so bad, was draining 1% every 2 minutes in standby. The android OS process is the culprit. Restarting helps but not for long... I restarted last night, which sorted it but then all I did was charge it, as soon as I took it off the charger, the drain was back, worse than before.

Really hope someone on xda can find a temporary fix... Or Samsung hurry up and get it sorted.

Don't seem to have much luck with Samsung phones tbh, but I'm sure its just a software glitch.
[Galaxy S II General] elpapo:
You should try the SE Arc! I charge it 2 perhaps 3 times a week, using it a lot. When i had my iphone i had to charge it almost every day, at least every 2 day.
[Galaxy S II General] Chrisch-RT:
This is my first charge and after 25hrs 45min it has still 28%

Internet is permanently activ (all 30min a check for mails)

- Display 44% (3hrs. 29min)

- Android System 17%

- Android OS 11%

- Akku bei Standby 7%

- Angry Birds Rio 6%

- Telefon in Standby 5%
[Galaxy S II General] AndyCr15:
Not a great deal no. Battery stats seem broken and only lists like 2 items, so I don't even know what my screen on time was :(

I used it quite a bit, I've done no optimising of settings and it was only day 2, so I don't want to judge yet tbh.
[Galaxy S II General] Dombledore:
Hi!

As some of you know I've had the phone for a little over a week now and the battery has warmed up pretty well.

http://twitpic.com/4qxquf

This is what I would call "moderate" usage: a few games, plenty of browsing*, gmail twitter + facebook pushing updates, a couple of YouTube videos and a small amount of music. No wifi, however.

*EDIT: Browsing on HSDPA + 3G
[Galaxy S II General] kwokwchoy:
I think he means, 10hrs for the 1st day and 9hrs the next after a recharge.
[Galaxy S II General] xspyda:
Sure he does but without an idea of what he's been doing with his phone during this time the figures are pretty meaningless.

Like the man said though, Day 2 is perhaps a little early to get into battery stats. I'm sure we'll be hearing more as time goes on.
[Galaxy S II General] coolfire:
Awesome! That's roughly my 'moderate usage' too, mate. :)

Thanks for sharing, and i strongly believe this will be my next device....

Cheers!
[Galaxy S II General] cavinsoo:
Is Latitude on? I always have it on and it drains my Nexus S battery badly. I can hardly use my Nexus S for more than 6 hours a day if Latitude is on. Latitude doesn't seem to have problems with SGS though.
[Galaxy S II General] Rooster19:
First aussie bloke I've seen on the site ^
[Galaxy S II General] sckc23:
Not sure if its been mentioned but did any of you guys try using the phone while charging?

i was playing a game with the phone plugged to charger cuz its running low on battery. however after a while i got this message that i should turn off all applications if not the phone won't be charing efficiently..:confused: and in the end the phone did ran out of battery albeit still charging.
[Galaxy S II General] Quist:
If you're using more power, draing more current from the battery, than you're putting in, it's a simple equation.

Gaming, coupled with everything else, must be drawing more current than the charger supplies to the battery, meaning it will definitely run out. Although not advisable, you could try hooking it into a different charger, like one from HTC, which has a higher current rating (most Samsung chargers provide 700mA at 5V, while most HTC provide 1A at 5V).

Be careful, however, using chargers with higher amperage charges the battery faster, causing more heat generation and ultimately shortening battery life. Also, batteries that are charged faster usually discharge faster as well.
[Galaxy S II General] sckc23:
Cool thanks for explaining. Thats exactly what i was wondering cuz i had no such problem with my htc desire.
[Galaxy S II General] the_Calen:
strange, i thought the time for charging is 3 hours and the battery life is about 9 hours so that means the charger is powerful enough to load the device and supply enough power for gaming, right?

or do i miss something?
[Galaxy S II General] NeoVR:
Were you using the official charger supplied with it?
[Galaxy S II General] DrakeSlayer:
how did u charge the phone ? u drained it and then fully charged it or u put it in charge right away?
[Galaxy S II General] Quist:
I would assume the 3 hour charging time estimate would be based on either very little to moderate use during charging. I would also assume that even the people who are thrashing their phones with new-buyer joy and are getting 9 hour battery life are not constantly gaming for 9 hours.

If you want to try non-stop gaming for hours on end, I would imagine you might be able to kill the battery within about 4 hours or less.

Still, this is all speculation. But on his/her original post on gaming while charging, the proof is in the pudding - the battery died, therefore more power was going out than was going in, whichever way you cut it.
[Galaxy S II General] sckc23:
yes i was and thats why i was puzzled.
[Galaxy S II General] sckc23:
i plugged it to the charger right away when i noticed the battery level was 25%. afterwards the level still dropped, at a slower rate, and died off completely after 2 hrs i think.
[Galaxy S II General] AndyCr15:
For the record, day 3 is much better. Today after 9 hours I was 52%.

I have now rooted and removed Samsungs rubbish... so this might be why it's better :)
[Galaxy S II General] Guitarfreak26:
Hey Andy

Can you tell me what you did to remove them? Is it root explorer?

I also signed into social hub and am getting significant battery drain but couldnt work out why, id imagine its the social hub like you suggested....
[Galaxy S II General] AndyCr15:
Rooted and then used Titanium Backup to remove them all.
[Galaxy S II General] ice_coffee:
Your missing something !

The phone is not always sat at maximum current draw, doing the maths from what you told me (charging a 1650 mAh battery in 3 hours) using a 700 mAh charger, it is safe to assume that the device was consuming less than 200 mA whilst charging (ie the device was pretty much asleep)

700 mA - 200 mA = 500 mA to charge device with

1650 mAH battery charged with 500mA = around 3 hours 20mins to charge to full
[Galaxy S II General] elpapo:
Lol, 24H is not good compared to SE Arc! But ok, you perhaps compared to HTC/Samsung mobiles!? ;)