yashsingh1/xdaforums huggingface dataset:
[Galaxy S II Q&A, Help & Troubleshooting] (•.•):
My screen eats also alot of the battary.

Like 4-5 hours and thats all and on minimum brightness.

I try to set it on 60 percent also and ofc autobrightness disabled.

Report later
[Galaxy S II Q&A, Help & Troubleshooting] tommehh:
is it true that the phone uses less battery when you select a brightness of 60%+ or auto? cause I use 15% all the time.
[Galaxy S II Q&A, Help & Troubleshooting] guigs91:
i have the same problem,never under 45%.

ke2!
[Galaxy S II Q&A, Help & Troubleshooting] Mittaa:
Screen is a drainer. I NEVER use auto brightness ... I set it to 0~20 when inside and only higher when outside in sunny conditions.
[Galaxy S II Q&A, Help & Troubleshooting] RogerPodacter:
amoled screens were quoted to consumers as using less power. but the tests i've done, i contend that amoled uses far more power than the SLCD screens HTC is using for example. like significantly more. so the screen is a killer for sure on your device, dont get fooled.
[Galaxy S II Q&A, Help & Troubleshooting] chalid:
Like Locster126 pointed out, it's only 15.64% for your 75 minutes of usage. The battery has 6,11Wh, which makes a power consumption of approx. 0,76W. But you must not forget, that the AMOLED display drain is highly dependent on the content you're displaying. Thats the difference to the LCD. While the LCDs backlight is mostly responsible for the drain, the AMOLEDs individual pixels drain the battery, which means that light-colored content drains more battery - more than on the LCD, while dark-colored content doesn't.

Nothing wrong with your screen.

EDIT: I will test the power consumption of the HD2s screen later .. ;)
[Galaxy S II Q&A, Help & Troubleshooting] guigs91:
i try everything(auto,or not) but don't work,sorry for my english
[Galaxy S II Q&A, Help & Troubleshooting] chalid:
Just finished the testing. After loading the HTC HD2 to 100% in flight-mode, I unplugged it and let the screen continuously on at full brightness for 30 minutes. The battery went down to 92%. So 8% for half an hour. That means, the screens power consumption at full brightness is ~0,73W (battery capacity is 4,55Wh).

So definitely lower than your SAMOLED power consumption ... but so is the display quality ... ;)
[Galaxy S II Q&A, Help & Troubleshooting] JuniorGG:
Oops! You're right!

Well ok, 8 hours so....

And considering that the battery has a capacity of 6.2Wh, the display actually drains 0.78W, at normal brightness (auto brightness was set to on and I was indoor, daytime).

In any case, that's not totally fair because it doesn't consider all the rest that's draining power from the battery. Considering my "normal" usage of the device, I get about 60% display ratio after a full battery discharge (to be optimistic).

This means that I have .6*8= 4.8 hours of "normal" usage to spread across the day.

I don't play 3D games and use WiFi just for syncing the emails and podcasts (10 minutes to say the most). I also don't use Bluetooth. I keep the GPS on all the time but turn on packet data strictly when necessary, and make just 5 minutes of calls and send 5 SMS... In substance, I use the device like a normal 150 euros phone.

This is my first touch screen device (as I said,I come from a Nokia N95 8GB), therefore I would like to understand if 4.8 hours continuous normal usage of the phone from fully charged to "mayday, shutting off!" can be considered normal.

I don't uderstand how some people can say they get one full day heavy usage on it, or 2 full days normal usage, playing 3D games, continuously syncing accounts, watching videos, surfing the internet, etc!!!! :confused:
[Galaxy S II Q&A, Help & Troubleshooting] JuniorGG:
My replies (thank you all) ->

to (•.•) (nice your nickname! :D ):

not far from mine. Tell me if you get some improvement at 60%. I will also repeat the test on mine, trying to be more systematic as possible, since I really want to be sure of what I have seen.

to seaweeduk:

please be more clear. Just the display or the entire unit? In any case that seems to be a much smaller consumption than that of my display...

to guigs91:

you mean you also noticed this odd behaviour?

to Mittaa:

right, but before setting brightness to a low level I want to be sure that it actually drains less power, and that's how I figured out that actually it's the other way around (I hope I made something wrong, as said I'll re-check better).

to RogerPodacter:

sadly, I perfectly agree with you.

to chalid:

thank you for reassuring me. To be honest however I'm not totally sure that black pictures drain significantly less power than white ones. I feel more that it's simply the bias current of the display, to drain a lot, and the rest is not so important. In fact, if you look at a 100% black picture totally in the dark, you'll see that it's not fully black. I's ALMOST fully black (much more than LCDs), but you can actually notice that the display is on (and therefore it is powered). If you shut off the display, you'll notice the diference.

to guigs91:

I also tried everything without success. Apart from noticing that perhaps high display brightness helps a little! :)

Did I forget someone? Ah yes, tommehh :) :) :) :

this is what I noticed. Let me re-check 'cause I find hard to believe myself! :D
[Galaxy S II Q&A, Help & Troubleshooting] chalid:
Well, you don't have the screen on for 5 hours continuously when using the phone, do you?

Here are my batterys stats:

Display: 2h 12m = 20%

Phone calls: 28m 24s = 9%

That's absolutely okay in my opinion. But like I said: If you want 1 week usage off one charge, you need to get a phone with a smaller display, because all of those 3.5+ inch touchscreens drain the battery pretty fast.
[Galaxy S II Q&A, Help & Troubleshooting] JuniorGG:
Hey Chalid, your display data suggests that it alone would fully drain the battery in 13 hours. That's substantially more than my display (8 hours only). Perhaps mine will last longer with some other few charge cycles, however, may I ask you if you could estimate the average brightness of your display during that 2-days session?

If what I noticed is actually true, in fact, I may get similar results as yours, if I keep the brightness high.

Thank you.
[Galaxy S II Q&A, Help & Troubleshooting] chalid:
Display brightness is on auto. Haven't used the phone in direct sunlight in those 2 1/2 days and mostly indoors, so would say most of the time the brightness was about 10-40%. But thats only a wild guess.

But like I said before: I'm sure that the screen content makes a difference :)

EDIT: 30 min on HD2 with 50% brightness drained 7% battery. Not much difference to full brightness.
[Galaxy S II Q&A, Help & Troubleshooting] RogerPodacter:
Yes 5 hours of continuous screen on time is normal and about the best you can get from any of these devices except the iPhone 4, but that is an isolated case.
[Galaxy S II Q&A, Help & Troubleshooting] oliver005:
Because iPhone 4 doesn't have a truly multitasking (almost all the apps are in sleep mode = no drain battery) and iPhone doesn't have any widgets and all that cool stuff you can find on an android phone. All iPhone 4 has is just simple icons which are always the same (unless you jailbreak it) and 1 type of keyboard (which doesn't even has a lower case in it).

So don't compare a fully closed iphone to a fully open android.
[Galaxy S II Q&A, Help & Troubleshooting] xflowy:
I forecast a continous screen time of ~6 hours. Is that ok?
[Galaxy S II Q&A, Help & Troubleshooting] RogerPodacter:
Yes that's very good.
[Galaxy S II Q&A, Help & Troubleshooting] Endr1:
When I First read the engadget's review I was very impressed by the 14hrs of heavy use they pretended to have. Now I now it is a lie. This 3d is very interesting because with a little of math and xp it just exposed the battery limit. If you keep the screen on, Then you have 5 hrs of full use.

Those 2 day stats are nice but actually I use much more my phone either to call ( in 2d I guess they would be at least 4hrs total voice) and to chat. Phone left idle drain 0.8% per hours.

I am in the smartphone market from iphone 2g and I can tell you that everytime there is somebody in the forums that have an epic battery life. Even with my old DHD I heard ppl talking about 12 hrs of heavy use... Ahahah heavy use... Get a life.

So I agree with all of you ppl that state the truth, if you use the sgs2 as a tablet you might be ending with less that 5 hrs of juice.

It wouls be really a nice idea to create a standardize test for cell battery, a script that keep the phone using its functions until it runout of juice. So thqt we can have a right comparison chart.

Ifone4 has a better battery life? Yes if you don't squeeze the media part or games... Otherwise the retina sucks your blood like and agry fly.
[Galaxy S II Q&A, Help & Troubleshooting] rameshzombie:
Who has battery drain problem on their SGS or SGS 2 please do:

- Turn 'Auto Sync' OFF

- Turn 'Auto Brightness' OFF and set to minimum or a little bit more than minimum

- Use JUICE DEFENDER app (free on android market) *3G uses too much from your battery, juice defender automaticly turns 3g off when your screen off so you can save your battery life... Just try and see, you can thank me later :)

- Try to use black wallpaper, SUPER AMOLED screens shows black color in real black and uses no battery for black color... (Super Amoled PLUS screens uses %18 less battery than the super amoled screens)
[Galaxy S II Q&A, Help & Troubleshooting] (•.•):
Hm i just tested it a while now and it is only a small change..

But it seems that a low brightness eats of course less battary.

I tested it with android assistant, to see the battary drain.
[Galaxy S II Q&A, Help & Troubleshooting] xflowy:
just tested my samsung after some tweaks again.

lost 3% in 20 minutes with display on. just the display on. i did nothing.

- wlan enabled, automatic brightness (probably 50%), some gmail-syncing, a weather widget and a news widget being on the screens.

3% in 20 minutes make 9 per hour. lets say 10%..would mean 10 hours of screen time, pure screen time. i think thats ok.

with some browsing e.g., and especially some gaming this time will get shorter really fast, i think. of course if you think of being outside theese days with a high birghtness needed.

the tweaks i did: darker wallpaper. battery calibration after doing the tweak for a higher battery capacity circulating in the net. freezed the process called wlan-sharing and some others with titanium backup.

tellme what you think (:
[Galaxy S II Q&A, Help & Troubleshooting] RogerPodacter:
The only problem o have with this is that actual real world test results of the iPhone 4 playing a continuous video give it full 10 hours of screen on video time. How did apple do this? It's pretty impressive. I can only attribute it to using a lithium polymer battery which is claimed to be 25% better than lithium ion.
[Galaxy S II Q&A, Help & Troubleshooting] daivik:
It could be due to the multi-tasking. It's not as "true" (in this case, lets call true multi-tasking what you get on windows) as Android. I know at least in my experience, I must reload some games and the IM+ app when switching. Also thre are small things, like the web pages don't load for me when I switch to a new tab. My Desire does this, so I go to t3.com for example, then i'll switch tab and do a google search and then switch back the t3.com would've loaded.

It's weird though because one of my relatives has an iPhone4 and her battery life barely lasts a day (or mainly, email sync, texting and a bit of browsing). (I was almost as shocked at her when I told her she should beg getting like 2 days!!!)
[Galaxy S II Q&A, Help & Troubleshooting] blue265:
4.5 to 5 hours of display time on is the average amount of time needed to kill the sgs2 battery. On the captivate it was between 3 to 4 hours. The battery will last a full day as long as you aren't using the screen for more than 4-5 hours during that period.

I admit, the iphone was better in some regards for battery life but as people mentioned, it is a smaller screen. However, I did find that heavy 3G use would destroy the iphone battery. I could get my iphone 3GS from 100% to 65% just by constant browsing during my one hour train ride. That would be impossible just browsing to kill my SGS2 battery that fast. I could watch a video on the iphone for that hour and only be down 10% though. Bottom line is that everyone is doing something different with their phone so will report differently. So one person will say it lasts a long time and another will say it was killed in a few hours using 3G.

Its no different with SGS2. When someone with an SGS2 reports two day usage, I guarantee that the display on time will be about 4-5 hours only. The only time I can squeeze way more than that is when reading an ebook with a black background. lol
[Galaxy S II Q&A, Help & Troubleshooting] (•.•):
this might make the usage of the screen a little bit clearer for you guys:

http://jsharkey.org/blog/2010/07/01/android-surfaceflinger-tricks-for-fun-and-profit

It strongly depends on what you use.

And try this maybe

http://xdaforums.com/showthread.php?t=1087427
[Galaxy S II Q&A, Help & Troubleshooting] aussiebum:
I think it also heavily depends on the type of video being played. 720p/1080p HD, or just SD (or even just VCD quality)? bitrate? sound on/off? volume? screen brightness? battery condition? apps in memory? It's all very subjective imo. I believe there was a GSMArena test last year that claimed the Galaxy S had the longest video playback battery life (or something like that). Go figure.
[Atrix 4G General] proalius:
I have working tightvnc server in Webtop for remote conection from my PC, i'd like to be able of connect to my phone without having it connected to tv, for do it webtop should be powered on but...how?

I had looked at android services (in /etc/init.d) and i don't see any able of do it.

Perhaps with a script...?

If we get it working we would have a portable Ubuntu machine and we should access it with only a pc and wifi connection.
[Atrix 4G General] the2dcour:
You could try using the "am" command to interact with dockprovider.apk/dockservice.apk Just throwing a random thought out there. If you get it working post up some instructions in the dev forum as I'm sure people would be interested.
[Atrix 4G General] proalius:
I will take a look...
[Verizon Droid Incredible 2] cloiselle:
I have light leakage on the left and right edges of my screen respectively when the phone is switched from normal to landscape view.

normal view leaks light on the right side , and landscape leaks light on the left side once the leds' switch to adjust homescreen position.

any one else have this problem? it's quite noticeable in a dark environment if you do...

how should i go about correcting this through verizon?

I Know they're going to try and push a refurb on me one way or another, how do i get around this as it's an obvious manufacturing defect and i JUST bought my phone on release date, it's 1 month old....???

please note this is not a screen or vertical light bleed, it is on the outermost left and right edges directly left and right of the home screen buttons and definitely switches sides as the leds switch from normal to landscape direction
[Verizon Droid Incredible 2] ACD168:
I have issues with my charging port loose, I as well bought on April 28th, 1st day, and since I'm outta my 14 day return they will only replace with a refurb, I'm considering doing it now, since most likely the refurb will be one that someone bought and brought back for another phone, so the refurb should be good as new, not to mention there is no way to tell if it's refurbed, my inc1 amoled ive had replaced 6 times and everytime there was no way to tell its refurbed. not too mention if the refurb comes and you're not happy with it, send the refurb back!
[Verizon Droid Incredible 2] nimdae:
Can't say that I notice any light leaks on mine. I'm in a dimly lit area, not a dark area, though. I bought mine a short period after launch.

Refurbs are just as good as new devices. In fact, refurbs generally have better quality control. If I had the option to buy a refurb I2, I would have.
[Verizon Droid Incredible 2] ACD168:
called tech support, the first dumb lady told me to bring it to a store and they will fix the plastic peiece(ya ok) called right back, got this great guy, and sent me out a refurb within 5 min.
[XPERIA X8 General] MAZNGR121:
LINK

[DEV] BACKTRACK 5 on Xperia X10 chroot - xda-developers
​
[XPERIA X8 General] hbali:
I think that it needs custom kernel.
[XPERIA X8 General] bogdan_mihai554:
I saw somewhere it is possible even on unmodified and unrooted devices. Search on google, Ubuntu on Android

Look, found link :) :http://www.youtube.com/watch?v=YbunTRzEQCI
[XPERIA X8 General] a-k-t-w:
It looks like fun. But our devices don't have much ram, I can't imagine Ubuntu running very well on it. Plus our screens are smaller, so you'd have a lot of trouble trying to do anything on it.
[XPERIA X8 General] afterbath:
wow pretty damn good, very like it :o
[XPERIA X8 General] Boshe:
We don't have enought RAM for using Virtual Machines.
[XPERIA X8 General] bogdan_mihai554:
Sorry for reviving this thread, but i feel the need to try and run it on my x8.

I will let you know if it works :)
[XPERIA X8 General] junghyun01:
even usb otg not yet worked on our x8 yet :( i has buy a otg cable today but when plug in it nothing happened :(
[XPERIA X8 General] vinmac:
Our roms as wells as kernel , both do not support usb otg but there are no issue saying that we can't use USB OTG.

The only need is to modify rom and kernel.
[XPERIA X8 General] junghyun01:
yes i think so
[XPERIA X8 General] shivamchinu:
i saw somewhere that we can run windows 3.5 on our phones. try that :)
[XPERIA X8 General] 7h3d:
I think we should try SWAP to run it ...
[XPERIA X8 General] wilbso:
hovever you try it, this answer will be what your looking for:

Yes you can have ubuntu on the x8. you can find a app on android app store for it or do it via computer. hope it helps

EDIT: yes, we can run it, but its not working properly, screen res, compatablitity,cpu, etc
[XPERIA X8 General] shvelo:
BIG NO!

X8 can hardly run Android, how can it handle Ubuntu?!
[XPERIA X8 General] exebreez:
It works but so slow :b

Use something that has more RAM like a Tablet or so... :b
[XPERIA X8 General] B.Jay:
Not aimed at you, wilbso - just as a general statement:

Ubuntu... on the X8... on a display that's 320x480 (portrait) or 480x320 (landscape)... LOOOOL... not even my Skype Linux window would fit into that resolution.

Ubuntu, or Debian for that matter, on the X8 is a nice "proof of concept", but - let us be honest for a moment - totally useless on screens having a resolution below at least 1024x600.

Oh, and while we having fun with totally unrealistic <whatever>-OS-on-the-X8 wishes...

How about QNX?

Or... how about Boot2Gecko?

Or... how about ChromeOS?

EDIT: And why the hell can't we run Windows NT 4.0 Server or Windows 2000 Server on the X8? That would be so 1337 to use it as a domain controller.
[XPERIA X8 General] wilbso:
wtf? x8 can run android, everybody is just putting modules wich take up storage and sometimes cpu etc causing the phone to be slow.

your right b.jay, i can run it but its just to slow, and the screen isn't big anough.
[XPERIA X8 General] woliaoxiaoliang:
Yeah, the battery life goes faster than minicm
[XPERIA X8 General] 72andrew72:
it's useless if packet injection + monitor mode doesn't work :D

IF YOU KNOW WHAT I MEAN
[XPERIA X8 General] bogdan_mihai554:
I ran it. It's pretty slow but it does work. I made a thread about it. Check it.
[Galaxy Tab 10.1 General] Supermighty:
http://www.bgr.com/2011/06/02/samsu...t-best-buy-in-nyc-national-availability-soon/

Sigh..

Maybe I'll get that iPad2 after all, and just wait till the Tegra3 ships later this year to get an android.

I bet this has to do with them not having enough units to sell.
[Galaxy Tab 10.1 General] markp99:
Ugh. Not driving to NYC to get this... :(
[Galaxy Tab 10.1 General] scmguru:
Are you F*ing kidding me, Samsung? I give up.. I'll wait until the Tegra 3 gear come out and buy a tablet from another vendor who doesn't play these games..
[Galaxy Tab 10.1 General] Ravynmagi:
Well now I understand why JR.com and Office Max are saying they aren't getting until late June.

It's a paper launch. Bummer. I guess they don't have much supply or something.
[Galaxy Tab 10.1 General] robkonz:
Philly Carpool

Anyone in the Philadelphia area want to carpool?
[Galaxy Tab 10.1 General] kytz:
This is disappointing, but we'll only have to wait a bit over a week more, I guess I can live with that.
[Galaxy Tab 10.1 General] Daps:
I'm looking to buy my 1st tablet. Still no word on the 8.9 I wonder is this going to be Samsungs version of the White iPhone. Announce it and it comes out a year later.

I'm starting to fall into the camp like a few posters here and may just wait till later this year and get one with the Tegra3 or see what Apple has in store for iOS5 *shrug* heck maybe even Win8

I was wanting to try Android as I already have an iPhone4 and wanted to try something new.

I'm guessing it's a supply thing because I don't understand the NYC only launch. I didn't think they would do a super soft launch with this device. :(
[Galaxy Tab 10.1 General] Supermighty:
This would be my first tablet too. I didn't think I would need one, but once I got a chance to use one for a couple of day I really want one.

I've played with the iPad2 and the Xoom and I much prefer the Android experience. However all these devices are still pretty new. I generally wait for a second gen before I buy.

I'd almost rather buy an iPad2 now, better resale value later, and wait till an Android tablet with more experience under its belt.

Also I'd much rather have a Nexus tablet.
[Galaxy Tab 10.1 General] Daps:
I don't have to have one but could find uses for it at work. We have some printers setup in the building and with a tablet I could connect to the network via wifi, and look at jobs on the printer without going to a terminal.

Exchange emails,5250 client,ssh, ereader for tech stuff, RDP and VPN plus just social stuff I'd want to do so I at least I can justify one and I thought I'd go with the 8.9 but I don't know now.

I'm one of those that my attention will jump to something else pretty quick but as a fall back the iPad2 can do everything I'd want to do and then some.
[Galaxy Tab 10.1 General] CalvinH:
Well, I will be right there.

I will try to look at the tablet and if the specs are as seen on the I/O units (no USB, no SD, no HDMI) then I will wait for the massess to fight to get a new 10.1 Tab, and then make my way to the TF / Iconia stand to get one.

And what is all that about Touchwiz? Is the release unit going to come with Touchwiz?

Regards.
[Galaxy Tab 10.1 General] MrSewerPickle:
That is sad and also explains why there are no preorders from Best Buy, Target, Walmart, etc. I'm starting to wish at least one manufacturer would wait until they have significant enough stock to launch before actually attempting to launch.

And I guess Motorola was the only one that got that right with the Xoom launch but then shanked the price.
[Galaxy Tab 10.1 General] byhoung:
Try the asus transformer. Amazing tablet!
[Galaxy Tab 10.1 General] Ravynmagi:
By launching only the 3G version with a non-working micro SD slot and waiting months to launch the Wifi version? I don't think pricing is the only thing they shanked. :)

(ps. And pricing wasn't really the issue, just a lack of a 16GB model.)
[Galaxy Tab 10.1 General] ad78:
im driving in NY lol
[Galaxy Tab 10.1 General] johnt1:
Well I guess a good thing out of this is, it will force me to read the reviews for a week to see if its good or bad.

If it was coming out the 8th were I live I would have just bought it first day.
[Galaxy Tab 10.1 General] SR45:
More time to check out the new Toshiba Thrive Tablet coming in July, not to mention more hands on from users that get the 10.1 first
[Galaxy Tab 10.1 General] gogol:
Come on people ... We have been waiting for months, what's wrong with another 10 days?

Relax and enjoy the moment. Read user reviews ... Be joyful Androids :)