yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy Note I717] :
Ok, so the topic is 3-4 hours of screen on time, which pertains to USING THE DEVICE on battery power.

We're talking about using the device with the screen on, correct? All of the things I mentioned will be IN USE when the screen is on. Yes or No?

You have failed to address any of them. I'm going to throw out some WILD ideas here, try not to get upset.

When the screen is on, you are likely using the LTE radio or Wifi more heavily than when the screen is off and simply syncing background data.

I'm also going to guess when the screen is on, the processor is ramped up from the idle/sleep speed. Playing games, watching videos, or other intensive things require more processing. Guess that would never impact battery life.

Stop pretending that the hardware/battery use is not interconnected. When the screen is on, the device is going to be potentially making use of all of the hardware it has available to it: LTE radio, Wifi, Sensors, Vibrating, Screen, Processor, etc. So I would say screen on time is heavily related to all of the other hardware in the system. Yes the screen draws a bunch of power, and when it's on, you're likely making use of not only the screen, but also every other component in the phone.
[AT&T Samsung Galaxy Note I717] techntrek:
This is my suggestion for improving the battery life, by reducing the brightness on the screen all the time:

http://xdaforums.com/showthread.php?t=1544757

I have a Widget set up for 75% screen brightness for use most of the time, a Widget for 30% for dark rooms (far darker than Dimmer), and then turn it off in full sun.

By the way, there is no such thing as SAMOLED. It is AMOLED: active-matrix organic light-emitting diode
[AT&T Samsung Galaxy Note I717] welchertc:
Ok, first off, you are completely wrong in stating it's ONLY a 25% larger screen. Now on to some math. The Inspire 4g has a 16:9 aspect ratio and a diagonal length of 4.3 inches. Therefore, calculating the surface are of the screen goes as follows using the pythagorean theorem:

sqrt((16x)^2+(9x)^2) = 4.3

256x^2 + 81x^2 = 18.49

337x^2 = 18.49

x^2 = .054866

x = .23423

16x = 3.748

9x = 2.108

Therefore the surface area of the Inspire is 3.748 * 2.108 = 7.901 square inches roughly. 1.25 times this, a 25% increase, would yield 9.87625 square inches.

Following the same steps for the Note, which has a 16:10 aspect ratio and 5.3 inch diagonal screen:

sqrt((16x)^2 + (10x)^2) = 5.3

256x^2 + 100x^2 = 28.09

356x^2 = 28.09

x^2 = .078904

x = .2809

16x = 4.4944

10x = 2.809

The surface area of the Note display is therefore 4.4944 * 2.809 = 12.625 square inches roughly. That would make it 12.625/7.901 = 1.597899 times as much surface area as the Inspire, making it basically a 60% increase in screen size. That's quite a bit larger than ONLY 25% more.

And that's just talking about purely surface area. The Note, as other have mentioned, is pushing 1280*800 = 1,024,000 pixels as opposed to 800*480 = 384,000 pixels on the Inspire, which is 2.666 times as many pixels. That, coupled with a more power intensive GPU to push those pixels, coupled with the fact that has been mentioned of comparing a 1 GHz single core to the Note's 1.5 GHz dual core, it shouldn't be that much of a stretch to see why the battery life is basically the same and not any better. And don't forget LTE as others have mentioned.

Besides, why is 3.5-4 hours a day not enough? if you sleep a regular 8 hour night, and are awake for 16, 4 hours a day of screen on time means you're looking at your phone a quarter of the time that you're awake...do you really need to spend that much time on it?
[AT&T Samsung Galaxy Note I717] nstong:
That's what people are beating around the bush about. Intuitively it may make sense that since the screen is 25% bigger it is 25% more drain, but that just isn't the case. The electrical engineering behind battery usage is a lot more complicated than that. Unfortunately you can't draw those conclusions and if those are your expectations your bound to be disappointed.
[AT&T Samsung Galaxy Note I717] bsw11:
There is a very simple solution to this problem - its called an EXTRA BATTERY or 2.

Then use MX Video Player that remembers where you left off if its video you play a lot of.

Power Off, change the battery, go the bathroom, resume playing..

Simple FIX!
[AT&T Samsung Galaxy Note I717] erick161:
Bingo!!!
[AT&T Samsung Galaxy Note I717] cbass:
Captain maths, to the rescue. I knew it couldn't be true, but I am far too dumb to know how to do the calculations.
[AT&T Samsung Galaxy Note I717] s1mpd1ddy:
MATH.

is there anything it can't do?
[AT&T Samsung Galaxy Note I717] nm3th:
Wow...reading op's posts made my head hurt. I really hope you add extra margin into your power capacity calculations or at least have someone else double check your work. :what:

Welchertc, thanks for posting the math.
[AT&T Samsung Galaxy Note I717] demigodchewtoy:
/thread
[AT&T Samsung Galaxy Note I717] zer0nine:
OP just got schooled. Lol @ Tags.

I hit 6 hours of screen time on GB. http://xdaforums.com/showpost.php?p=23560201&postcount=54

To the OP:

[YOUTUBE]SHoNWwhzh3M[/YOUTUBE]
[AT&T Samsung Galaxy Note I717] erick161:
Was there a noticeable difference turning off LTE using saurom? I would think so logically...just another reason for me to root/flash if that's the case.
[AT&T Samsung Galaxy Note I717] go go l:
Was paranoid about battery life too, installing a %battery app, dimmer, and keeping it on lowest brightness. Now I carry an extra battery in my office bag and switch out when needed. Enjoy the benefits of a removable battery, and enjoy the screen.
[AT&T Samsung Galaxy Note I717] Coffinfeeder:
Like other people have stated, brightness of the screen is probably the biggest draw on the battery. Reduce your brightness to 20% or lower, no live wallpapers or bright wallpapers (very dark or black would be best).

You should see a better on screen time adjusting those accordingly.
[AT&T Samsung Galaxy Note I717] wase4711:
Oh boy, another battery life rant...
[AT&T Samsung Galaxy Note I717] lanwarrior:
The screen is very birght, even at the lowest settings.. that's where the biggest draw comes from.

I have an iPhone 4 and AT&T Note. When I put BOTH phones at the lowest brightness settings in a completely dark room, the Note is still too bright for my eyes. I had to use an app called "Screen Filter" (available in Market).

Imagine if during daytime you use the screen at 50% brightness for 2 hours....
[AT&T Samsung Galaxy Note I717] SKyRocKeting727:
Screen size plays a big role.

-Once you go NOTE, you'd say 4 inches a Joke
[AT&T Samsung Galaxy Note I717] littlewierdo:
Not really.

I have an ipad 2 and I get easily 10 hours of screen on time. To give you an idea, I watched an episode of law and order (on the ipad2) on Netflix and in 40 minutes time, my battery dropped from 79% to 71%. A second episode and it dropped from 71% to 63%.

The Notes' screen resolution is very similar to the ipad1 & 2, possibly about 20% less pixels on the ipad vs the Note.

Note - 800 x 1280

Ipad1&2 - 768 x 1024

The ipad has a bigger battery at 6,944 mAh battery.

Compare the ipad battery life to any Android tablet and battery life will be a stark difference between the two. Why? because Apple is putting bigger batteries in their devices and because Apple develops both the hardware AND software in-house. The A5 processor is also very battery conservative.

Screen size isnt the issue in most cases, its the smaller battery and lack of optimization of the software on the phone.

I have a Samsung Gtab, Asus eee slate running Windows 7 & 8 (user preview build) dual booting, Samsung Note, Samsung Captivate *, Iphone 4 *, and an Ipad 2. I dont use the starred items, they are in a drawer collecting dust.
[AT&T Samsung Galaxy Note I717] SKyRocKeting727:
You cant really compare a phone to a tablet. Two different things. The ipad2 has a 6944 mAh battery which is more than twice the size of the notes 2500 mAh. Also, the note has a radio freq for phone service and searches for 4G which is constantly running. I had the ipad 2 and the iphone 4, the ipad always had bettery battery life. Big batteries take really long to charge, its not ideal for everyday use so thats why samsung doesnt slap a huge battery in their phones. The new iPad with the huge 11,xxx mAh battery takes forever to charge and also, they cant be charged on the usb cord from a laptop/computer unlike phones. The word "on screen" means actually screen on. Not Standby time. So to say screen size doesnt matter is BS.

The only reason why Apple didnt change screen size on the iPhone since damn 2008 is because they knew it would need a Bigger battery to run a bigger screen and high resolution which means the phone would be Thicker or atleast bigger body. The droid razr maxx set a new bar on thiness + battery life.

-Once you go NOTE, you'd say 4 inches a Joke
[AT&T Samsung Galaxy Note I717] erick161:
I stopped reading when you started comparing apples iOS running on an iPad to Android on the note. So many variables are at work here (screen size, SoCs, battery size, let alone OSs)...reading 3 paragraphs is pointless when discussing the NOTES battery life.
[AT&T Samsung Galaxy Note I717] johnus:
How exactly did you get around the Note's 1amp charge rate limit? Unless your battery is damaged or old...it shouldn't be reaching a 100% charge in less than 2.5-3 hours from empty.
[AT&T Samsung Galaxy Note I717] 21productionz:
Do tell
[AT&T Samsung Galaxy Note I717] sunshines4u:
No my battery doesn't charge full 100% in 3 hours. Never.

It takes More like 5 hours plus.
[AT&T Samsung Galaxy Note I717] erick161:
You obviously failed at reading. My comment was not directed at you comparing the note to a tablet...but to a tablet from apple. Its literally apples to oranges to compare the two given the vast differences between the two.
[AT&T Samsung Galaxy Note I717] SayWhat10:
yeh fastest way to charge battery is with phone off...but if its not at night...who does that?
[AT&T Samsung Galaxy Note I717] littlewierdo:
Yes, but the true tell that he is charging it off a USB port on a PC/Mac is the 5 hours to charge the phone. I mentioned the phone off while charging because this is the absolute minimum it will take to charge the phone. Even with the phone on however, it should never take more than 3 hours unless you have something installed on your phone that is using an insane amount of battery. And again, 3 hours is also considering your phone is absolutely dead, I think for most people, this is not going to be the case.

Remember, the Note battery indicator scales backwards meaning that it drops faster from 100%-90% than from 30%-20%. In fact, it only takes 30-45 minutes for my phone to drop from 100% to 90%, it takes over an hour to drop from 30% to 20%, using the same usage pattern.

So most people see 30% and freak out plugging in their phone much sooner than they need to. I decided to wait last night until my phone was completely dead, from 15% to completely dead took 90 minutes. This being the second time I have ever completely drained my phone, in fact, the second time I even let the battery drop below 20%.
[AT&T Samsung Galaxy Note I717] lanwarrior:
Go here on discussion about battery drain when screen is ON.

http://xdaforums.com/showthread.php?t=1179809&page=100
[AT&T Samsung Galaxy Note I717] SKyRocKeting727:
LMAO, this sure got off topic fast. Thanks littleweirdo. All it takes is one person to compare Apple to Android and the debate flies. Obviously you have different experiences with battery life than I do. BTW I have no problem with charging from usb cord. Take everything you said with a grain of salt. Nuff said.

-Once you go NOTE, you'd say 4 inches a Joke
[AT&T Samsung Galaxy Note I717] littlewierdo:
AGAIN, since people have trouble reading, apparently if its more than 100 words, it goes above any persons ability to comprehend around here. And God forbid anyone says 'Apple'. The lack of maturity is staggering.

Put a 5000 mah battery in your Note if you are not happy with the battery life you are getting. Period.

Yea, maybe Samsung should have put a bigger battery in, but they didnt. That doesnt stop you from getting a bigger battery.
[AT&T Samsung Galaxy Note I717] SKyRocKeting727:
"Put a 5000 mah battery in your Note if you are not happy with the battery life you are getting. Period."

-I believe you were crying about androids small batteries. Not me. I just said the screen size played a role in battery consumption and after that, you opened a can of worms.:cool:

But I guess I'll be the bigger person and stop before this gets out of hand.

BTW, Im comprehending that your user name matches you perfectly. :)

-Once you go NOTE, you'd say 4 inches a Joke
[AT&T Samsung Galaxy Note I717] littlewierdo:
1. Except I wasnt complaining, I was showing comparisons.

2. If you havent figured out that the biggest draw on portable electronics is the screen, well, ****, now you know.

However, the screen doesnt play any bigger of a role than on any other device whether it be a smart phone, tablet, portable mp3 player. Yes, the screen draws alot of power.

Again, to prove my point, put a bigger battery in any Android phone released in say the last 3 years and voila, your phone should easily last you all day and in some cases two. Its NOTHING more than an undersized battery. And its a trend in virtually all devices on the market today that have a screen, excluding Apple devices.

3. There are solutions to this problem. If people dont want to utilize them, fine.

4. Can anyone show me an Android phone where people ARENT complaining about poor battery life! Yes, there might be an exception.

But the exception is never the rule

5. I would understand this more if we were talking about an actual hardware defect that isnt fixable. I mean, the Captivate had a crappy gps and while there were software fixes to improve its crappiness to make it less crappy, it was still crappy and not really fixable.

Addendum

Im sorry to be a douche about this but I grow tired of the 'your post was too long so I didnt read it' (but Im still going to respond even tho I didnt even read what you had to say) and the elitist attitude that is sometimes present around here (you said 'Apple' or 'Microsoft' so Im not going to bother reading any further and by the way, I feel so inclined to tell you that I stopped reading what you had to say AND my head is so far up my ass that Im going to respond to you even tho I didnt read past 'Apple' or 'Microsoft').

Again, Im happy to have a debate, Im even ok with disagreeing. What Im not ok with is people treating others with no respect, all because the internet is anonymous.
[AT&T Samsung Galaxy Note I717] HDCowboy:
My phone was sucking battery juice like crazy also! After a 10hr day at work my phone would be down to about 30% battery before I left to go home. While part of the problem was that is was new and I was playing with it a lot more than my old I-Phone, it still used a heck of a lot of battery. Yesterday I downloaded a battery mangager & task killer app and ran that all day and my batt was about at 65% around quitting time, seems to have done some good. The apps I downloaded were "Easy Battery Saver" and "Easy Task Killer" and they're made to work together and they are free, heres a link in case anyones interested.....

https://play.google.com/store/apps/...GwsMSwxLDEsImNvbS5lYXN5LmJhdHRlcnkuc2F2ZXIiXQ..

https://play.google.com/store/apps/...51bGwsMSwxLDEsImNvbS5tb2JvLnRhc2sua2lsbGVyIl0.
[AT&T Samsung Galaxy Note I717] Carnifex3:
Do what I do carry an external battery back. While I'm at work I just put the 10000mah pack in my back pocket and the note in the front side pocket it all fits and you don't even notice it.
[AT&T Samsung Galaxy Note I717] lanwarrior:
LOL! What an Apple Fanboys.

I currently HAVE an iPhone 4 and Galaxy Note. I travel a lot, where I will have no access to an electrical outlet for many hours. Guess what? The iPhone battery life is WORSE than my Galaxy Note.

Oh, that's right, based on your theory, that's because iPhone have "...an undersized battery...".

With medium-heavy usage (TOTAL TIME of SCREEN ON is 2 hrs 30 minutes), my Note last approx. 9 hours, enough to get me through the day. I don't feel this is an issue for me.

Look, you don't like the Note because of the perceived battery issue, sell it and get an iPhone. Otherwise, use app like Battery Monitor Widget and BetterBatteryStats to identify WHAT is causing the battery drain.
[AT&T Samsung Galaxy Note I717] littlewierdo:
*sigh*, I give up. I give Apple credit for putting good batteries in their devices. IOS sucks, their devices are over priced, everything has to be controlled by Apple (meaning no sideloading), apps have to be approved, etc.

I am by no means a fanboy. But they do make good hardware.

If your Iphone is lasting less time than the Note, your either lying to make a point or you have a faulty battery in your Iphone.

http://www.apple.com/iphone/specs.html

Both according to the specs AND from personal use, I get about 7-8 hours of screen on time using the Iphone 4. If Im using 3G, this drops drastically, probably to around 5 hours of screen on time (for example using Netflix to stream over 3G).

The Note is nowhere near this on the stock battery. However, you can fix this, pick up an extended battery, pick up spare batteries with a charger capable of charging them, or pick up a battery pack.

LET ME MAKE THIS CLEAR. I give credit for Apples hardware, stability in IOS, and for revolutionizing the cell phone industry with the first Iphone. That is it. And that by no means makes me an Apple fanboy, which is a term that needs to go away. People have preferences and insulting their intelligence because they prefer one device over another is plain insulting.

I have NEVER rebooted my Ipad2 since I bought it January of this year. It has NEVER been rebooted. Can the same thing be said for an Android tablet? No.

Having said all that, my Note is my primary device. I use it more than even my Ipad or Iphone. For me, it is the perfect device except the stock battery is far too small. But this is because the average consumer *****es and complains if the phone is too thick, to the detriment of the product in my opinion.
[AT&T Samsung Galaxy Note I717] lanwarrior:
Nope, you said it yourself in your previous 2 post "...undersized battery.."

The iPhone has SMALLER battery than the Note, so of course the Note has longer battery life.

Seems it's you who are lying, keep changing your argument.. LOL!!

All right, I am done with you.. Have fun with the iPhone!
[AT&T Samsung Galaxy Note I717] littlewierdo:
Just two posts above quoted FROM YOUR POST, NOT MINE.

Your words, NOT mine.

Smaller battery does not mean less battery life.

Smaller battery in the same device equals less battery life.

I NEVER said that any device with a smaller battery size would get less battery life. It is device specific.

To show just how stupid you are trying to make me sound, my bluetooth keyboard that has a 500 mah battery in it that runs for MONTHS without needing to be charged, having a 2500 mah battery (the same as what the Note has) would make absolutely no sense. My bluetooth keyboard doesnt need a battery this big.

The right sized battery for each device.

Apple can get away with putting a 1420 mah battery in the Iphone because of the extreme optimization they do. The Iphone actually gets good and reasonable battery life.

Samsung on the other hand should have put a bigger battery in the Note in order for the phone to get reasonable battery life. In fact, nearly every Android cell phone should have a bigger battery than what they come with stock. Show me an Android cell phone that doesnt have complaints about battery life. The fact is, with exception to one or two flukes out there, you cant.
[AT&T Samsung Galaxy Note I717] SKyRocKeting727:
And thats YOUR opinion. Nuff said. Giggity giggity gooo! Lets stop.

-Once you go NOTE, you'd say 4 inches a Joke
[AT&T Samsung Galaxy Note I717] robor007:
And iOS is supported on a handful of devices while Android is on hundreds across a wide range of hardware platforms. It's a lot easier to optimize your OS when you only have a few devices to support.
[AT&T Samsung Galaxy Note I717] littlewierdo:
Agreed. But given that, since Android doesn't have the optimization, Android phones should have bigger batteries to compensate. That's all I'm saying. Put the right size battery in the device you are using, the manufacturer of said device needs to account for power drain, how much / little optimization was done, and the device's function. A bluetooth keyboard as I mentioned in the example is not going to be very useful if it is questionable whether it will last a day of heavy use. A cell phone should be the same, a user shouldnt have to think about trying to conserve battery by not using the device in order to make sure they can make it thru ONE day.

For those interested, here is the best external USB battery pack and the highest internal battery I have been able to find.

The external battery pack is a battery that you charge and then, during the day, when your phone needs a boost / charge, you plug your phone into the external battery. This does not change anything in the phone itself. It will charge the phone with the stock battery from dead to full 4 times before the external battery has to be recharged. Used in conjunction with the extended battery I linked (the Mugen), it will charge that battery twice.

The internal battery replaces your stock battery and back battery cover in your Note with a larger battery and a bigger battery cover. This does increase the weight, thickness, and time to charge. The one I linked below however will give you more than twice the battery life of the stock battery (probably around 115% more battery life).

Prices are at the time I posted, they are subject to change.

External battery pack 11000 mah (Trent iCruiser) - $77

http://www.amazon.com/New-Trent-IMP...TF8&coliid=I1U1S1WCNOZXWO&colid=355NPVSMSCAE7

Internal big capacity 5400 mah battery (Mugen) - $92

http://www.amazon.com/Mugen-Extende...TF8&coliid=I188KS092W6FY2&colid=355NPVSMSCAE7
[AT&T Samsung Galaxy Note I717] SayWhat10:
eh, i cant believe the iphone battery last shorter than the note

i cant stand apple, but somehow they make their devices last longer than android
[AT&T Samsung Galaxy Note I717] robor007:
The woman I got my Note from at the AT&T store said iPhone 4S users are complaining about battery life. Still, they are better than many Android phones. I don't really care as long as I can get through a work day. If I know I'm going to be away from a charging source, I bring my spare battery. No biggie.

RE Apple's battery life - a tiny screen and no LTE are part of it. I'm interested to see what Apple does with the iPhone 5. The iPad 3 grew in thickness and weight. And I will LOL at every current iPhone user who says most Android phones are too big because if Apple makes a large phone they will buy it anyway.
[AT&T Samsung Galaxy Note I717] littlewierdo:
Finally some people that understand.

Tho, I dont think LTE on AT&T has any negative impact on battery life. The reason is because LTE on AT&T uses the same antenna as the 3g antenna, on other networks, an entirely separate antenna is required. I dont have time to look for the article that explains LTE in detail but if you look at my other posts, it shouldnt be hard to find, I posted it only a few weeks ago.
[AT&T Samsung Galaxy Note I717] akafred:
i am glad someone figured this out.. i was reading the 25% bs and was thinking it had to be 50-60% more AREA

http://www.displaywars.com/4,3-inch-16x9-vs-5,3-inch-16x9