I was able to add some real time graphing to the battery calibrator app where the current draw thru the battery is sampled every 2 seconds. This gives a very fine tuned accurate picture of what the battery is doing. note the battery driver had to be edited to allow for current readings taken at a faster sample rate, so all that work was done initially.
This first test is the phone switching from connected to 3G to switching over to wifi. notice the extreme difference between the spikes and then how smoooth it levels off around the 14 second mark. shows how much battery is saved using wifi (i'll come to this more later).
Switch from 3G to WiFi data by RogerPodacter
The second image is just showing the phone left completely idle 3g data, but with the screen on, min brightness, and timeout set to never. curious to see those regular periodic blips of current draw. notice -170mA is about spot on for the black amoled screen showing all black color like that. and this shows how efficient 3g data is during idle when no data transfer is taking place. This graph view is what was displayed during this time, mostly black.
Idle 3G Connection, Screen on Min Brightness by RogerPodacter, on Flickr
the next screen shot shows switching from screen brightness at minimum to maximum brightness, but showing the same black graph image. notice the slight increase, but it stays dead flat still. it switched at the 36 second mark.
Switch from Min to Max Brightness, Showing Black by RogerPodacter, on Flickr
This screen shot shows what happens to amoled when displaying a fully white image at maximum brightness. the power draw goes thru the roof! it started at the 16 second mark. i used the app "dead pixel detect" to display solid full screen colors, this one showing white.
Displaying a Solid White Screen by RogerPodacter, on Flickr
Same as above, but now switching back to the black graph view, the current drops down to normal. Swtich happened at about the 15 second mark.
White Color Max Brightness by RogerPodacter, on Flickr
The next screen shot shows why wifi gives so much better battery life. this shot shows receiving a new gmail email message over 3g data connection. right at the 20 second mark the email comes in, and the current draw spikes over -500mA. when the same email message is received while connected to wifi, there is not even a spike at all, it stays flat.
Receive Email over 3G by RogerPodacter, on Flickr
This is due to the much faster latency that comes with wifi. on 3g, the 200ms ping time, each direction to and from the server, all while the radio is fired up, is what causes the spike. now think about that happening all day long with all your google services constantly talking to their servers.
This next one shows loading a web page with a light color, and scrolling around. I loaded a thread here at XDA with the stock browser, without invert color turned on. look at the enormous spikes.
Load and SCroll Light Color web page by RogerPodacter, on Flickr
And finally, this is loading and scrolling the same web page, same thread, but with invert color option turned on, so the color was basically black and dark. (For these last 2 web page tests, i forgot to turn the screen brightness back from max to minimum brightness. oh well.).
Load and Scroll Dark color web page by RogerPodacter, on Flickr
If anyone wants more test comparisons done, just post your request. For the above tests, i didnt think things out too much, so i'd like to really do things over and show more/better scenarios of how power draw is effecting our phones' battery.
Interesting! Thanks for taking the time to put this together.
I had one more, from today. Watch what happens when i go and read a topic on the engadget app (entire white colors) while i was outside at max brightness. power draw sky rockets up, then back down when i return to the black graph view.
Browse the White color Engadget App by RogerPodacter, on Flickr
great data - can you check some apps, like words with friends & weather channel (background widget). words with friends tops out my cpu for no good reason.
fyid said:
great data - can you check some apps, like words with friends & weather channel (background widget). words with friends tops out my cpu for no good reason.
Click to expand...
Click to collapse
how exactly would you like it tested? i've never used words with friends, and i never installed the weather channel widget either. the second one might be harder to test. is there a way to tell it to initiate its update or data transfer or whatever it is that it does?
The current graph is a lil bit confussing. Is the rightmost the oldest plot? and the leftmost is the most recent?
zeus_chingon said:
The current graph is a lil bit confussing. Is the rightmost the oldest plot? and the leftmost is the most recent?
Click to expand...
Click to collapse
The right direction is older and the left is more recent. The full current graph only shows in seconds, around a minute or so. So this is like a true profile of all power, in real time, going thru the battery's resistor, and hence device power draw. So its great to see exactly what different tasks do to power behind the scenes.
I've been doing many more tests just for fun. My overall discovery is that the screen is bad, real bad, and there's a disproportionate difference between min and max screen brightness. Min is really good, but max is so far off the charts bad that its horribly power hungry. So I'm practicing keeping locked at min brightness. Then comparing things like CPU usage loading a web page in the background, then over WiFi then 3g, etc.
I'm enjoying seeing the bad offenders.
Thanks for posting these, you're just as helpful here as you were on the S60 boards @ hofo
Excellent analysis to visually confirm what has been known and constantly overlooked by people complaining about their battery life: the 2 major power-hungry things in the phone are the display and the 3G data - when it fires up.
You could also show GPS power draw, to have a good comparison between values. I'd guess that running Google Maps on full brightness during the day over cellular data will show near the maximal power draw possible from the device.
Jack_R1 said:
Excellent analysis to visually confirm what has been known and constantly overlooked by people complaining about their battery life: the 2 major power-hungry things in the phone are the display and the 3G data - when it fires up.
You could also show GPS power draw, to have a good comparison between values. I'd guess that running Google Maps on full brightness during the day over cellular data will show near the maximal power draw possible from the device.
Click to expand...
Click to collapse
Good ideas, I'll do a gps test next. I've already done it but with no screen shots, and I can say it really puts I high load on the battery by far.
I also just now did a 3g phone call test, and it was higher than I thought it would be. I'll post the screen later.
I'm now a huge proponent of min screen brightness. If you can use min brightness then do it. If that's too dim during the day then 40% gives the best combo of still usable with decent power. But auto brightness, or max brightness which will happen in sun light, is just totally off the charts bad. And when loading a web page outside at max brightness, the power is thru the roof.
So I'm now locking my screen at 40%.
Edit: I also did color comparisons. Full screen of white, red, blue and green. Nothing too crazy but still cool.
Fascinating read. Keep up the good work!
Wow, very interesting.
Thanks man.
Wow I'm finally trying out stock gingerbread and the idle power readings are significantly lower than froyo. On froyo I'd see around 20mA and I'm seeing about 7mA now consistently. My app doesn't work on stock so I don't have fine control but it definitely makes sense from reading what people are saying.
Nice little review.
Out of curiosity, do you think there's much difference between AMOLED, SAMOLED and SAMOLED+ in terms of power consumption?
I'm eyeing the Galaxy S II as my next phone and online reviews all rave about how power efficient it is. But we all know how that isn't entirely true!
The SAMOLED displays are supposed to be 30% more efficient then regular AMOLED.
Hmm, and I have a Nexus S, and that SAMOLED seems to be total crap... lol
tangcla said:
Nice little review.
Out of curiosity, do you think there's much difference between AMOLED, SAMOLED and SAMOLED+ in terms of power consumption?
I'm eyeing the Galaxy S II as my next phone and online reviews all rave about how power efficient it is. But we all know how that isn't entirely true!
Click to expand...
Click to collapse
Samsung claims a 30% increase in power savings, bit I don't believe it for a second and here's why.
First, both the nexus one (amoled) and nexus s (super amoled) both get IDENTICAL browsing test results, both make it 3.7 hours at anandtech. Nexus s has slightly larger screen but also has larger battery.
Second all you have to do is look thru galaxy, nexus s, and galaxy s2 forum. Not a single one has anyone getting more than 4 hours of screen on time in the battery threads. Not a single bit of improvement, at all, between the amoled technologies.
Then to rub it in, iPhone 4 crushes it getting a full 10 hours of browsing time on the same test.
LCD is becoming my preferred choice more and more. Testing an HTC inspire with slcd, it pulls 250 mA Max brightness. But my test results in this thread alone shoot up to 900 mA just loading white pages.
Hmm. So wonder whether it's worth getting the HTC Sensation instead of the Galaxy S2...
Wow! With full brightness on a mear-white page and the torch on, I was drawing 747mAH...
Radio versions
There were conflicting reports about power consumption of various radio versions including versions 5.08 and 5.12. It would nice to see a more solid evidence of how these radios perform. Thanks ...
Related
Now we know the reason why the battery is draining so fast on Galasy S Phones.
The simple reason the AMOLED screen.
If we compare the Droid X with the Galaxy S both with 1500mAh batterys. While the Droid X can reach up to 7:42 hours of battery life the Galaxy s can only 4:44 hours. Its sad because the marketing made us believe that AMOLED is power saving.
Here the full Test from laptopmag.com.
Did you not read this part?
"So should you steer clear of AMOLED phones if you care about endurance? Not necessarily. OLED technology uses the most power when displaying white, which is why Samsung chose a black background for the app menus on its Galaxy S phones. Since our battery test surfs web pages
, most of which have a white background, both the Galaxy devices and the Incredible were at a disadvantage. It really comes down to what you view most often on your phone."
I tested a mkv 720p video playing for 1 hour and it only used 15% battery. From that, the battery should last about 6.5 hrs.
I was reading a test on another site a week or two ago, and it claimed the Galaxy S ran a 720p vid of Avatar on loop for 7.5 hours before refusing to run the video any further as the battery had reached 20, so 4.5 hours seams a little low?
psp888 said:
I tested a mkv 720p video playing for 1 hour and it only used 15% battery. From that, the battery should last about 6.5 hrs.
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Click to collapse
The brightness must have been set to VERY low, non ?
Not quite true that it's just the screen.
I installed a widget to turn off data connections entirely (running on 1G phone and text only) and I get about 4-5 days off a single charge now, and that's with moderate gaming/music/ebook use.
If I want to use the internet/email/whatever I just click the widget, it reconnects in 10 seconds and I am away.
I am also running the LG Optimus launcher as well, which I notice gives me much better battery life than TouchWiz/Launcher Pro/etc (although don't hit the volume button on the homescreen as it force closes)
Prasad007 said:
The brightness must have been set to VERY low, non ?
Click to expand...
Click to collapse
it was indoor, with auto brightness, so don't know what brightness it was on.
psp888 said:
it was indoor, with auto brightness, so don't know what brightness it was on.
Click to expand...
Click to collapse
Well, that's pretty darn good then! I doubt I've seen battery life that good on my phone....
when the phone is set on auto brightness 90% of the time is less than 50% brightness
when is above 50% brightness it is super cool! that's when you see the full effect of the SAMOLED
if you set it to say 60% or 75% brighness you will see the full bloom of the colours.
I'm pretty *****y about my phone's battery life but i have to admit that watching mkv and avi videos on my phone does not drain the battery as i would have expected. 1h30min movie drained around 20% of the battery, brightness in the perfect middle, 3G on and all that. So i think 7h++ playback is definitly doable.
Oddly enough i have the impression that leaving your phone screen on for 1h30min would probably drain close to 20% of the battery (just an impression though, might be totally wrong).
Also, 3G drains a lot of battery. I messed up with my phone and didn't have the APN configured, so no 3G, battery performance exploded, especially if u'r in an area with not so strong signal
i only notice heavy drain on battery when i'm on WiFi or 3G
like browsing the web, downloading stuff
just having WiFi on and 3G on does not consume that much battery, it is only when they are fully active.
all other tasks like watching movie, or doing offline stuff, even playing games does not consume much battery
i can drain the battery with just 4 hours of constant browsing/download stuff
but i can go on the full 24 with 1 battery pack if i do not use 3G/Wifi
on JM1 (or maybe JM2) when i had no 3G and WiFi turnerd off, bascically it would be 2% off every 8h-10h iddle time which sounds really good. However, according to the reported capable iddle time of the phone, it's not that good. People also reported less consumption in iddle.
I don't think i had too many tasks runing in the background (definitly no task killers)
Will.1 said:
I'm pretty *****y about my phone's battery life but i have to admit that watching mkv and avi videos on my phone does not drain the battery as i would have expected. 1h30min movie drained around 20% of the battery, brightness in the perfect middle, 3G on and all that. So i think 7h++ playback is definitly doable.
Oddly enough i have the impression that leaving your phone screen on for 1h30min would probably drain close to 20% of the battery (just an impression though, might be totally wrong).
Also, 3G drains a lot of battery. I messed up with my phone and didn't have the APN configured, so no 3G, battery performance exploded, especially if u'r in an area with not so strong signal
Click to expand...
Click to collapse
I fully agree with you. I'm surpised my phone uses so little power when watching a movie, coming from winmo I'm shocked I can use this thing for a day (12-18hours) before it dies. Overall I'm quite happy with my set up as everywhere I go I have power cables. Car (check) , Office (check.USB sync) , walking (check, 2000mha solar battery charger) and Home (power adapter). I'm power paranoid due to being with Winmo since the Aero 2130 to X1i.
And yeh, 3g kills things 4hours max when on 3g.
the main thing that seems to drain the battery for me is web surfing and widgets which use the data connection. I now run a minimalist set of home screens with few widgets and have already noticed an increase in performance and battery life. 3g is pretty power hungry, but since vodafones 3g connectivity is so poor, I am often forced to use gprs through the day anyway as I'm plagued with time outs and dropping connections (if anyone from vodafone is reading, I've only been with you 3 months, and already I know I won't be staying with you come the end of my contract!)
Something's gotta be wrong with the test? I mean, look at the Captivate and Vibrant, both do about 4h 45m, but the Epic 4G does 5h 34m? Same screen, same battery, no? Yet ~50 minutes difference? Must be something other than the screen doing something...
Regards
Tachikoma_kun said:
Not quite true that it's just the screen.
I installed a widget to turn off data connections entirely (running on 1G phone and text only) and I get about 4-5 days off a single charge now, and that's with moderate gaming/music/ebook use.
If I want to use the internet/email/whatever I just click the widget, it reconnects in 10 seconds and I am away.
I am also running the LG Optimus launcher as well, which I notice gives me much better battery life than TouchWiz/Launcher Pro/etc (although don't hit the volume button on the homescreen as it force closes)
Click to expand...
Click to collapse
Tachikoma_kun, what widget are you using to shut off 3G?
I came to the Galaxy from a HTC legend and I miss the HTC widget that lets you shut down mobile date completely. When I first had my galaxy on JF3 firmware, I noticed there was an option in the settings to use '2G' only. But since flashing JM8 I can't see this any longer.
Most of the widgets I've seen do some jiggery pokery with the APN configuration to achieve the data/3G shutdown, does the widget you use do the same thing?
Thanks
What's the point of having an android phone if you can't use as mobile internet as you want? I'm on unlimited data plan and my SGS lasts less than half a day on full charge with data on. Its the same thing with my old experia x10i. So I'd assume its the 3g/hsdpa connection. I had a blackberry 9700 as well. Battery life shortens significantly with 3g on.
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Sent via the XDA Tapatalk App
I was interested in this phone and was wondering the battery life web browsing on this phone.
Thanks
It's great, but it is very dependant on multiple factors (screen brightness, what's in the web page (Ex: flash), signal strength, ...) I've easily gone more than 4 hours of continuous browser use, but I've also killed it in less than two, it just depends.
I can tell you if you was to sit down and browse the internet long as you can ie streaming, download reading articles. The display on the epic will kill it in about 4 hours or less. I'm not gonna lie to you like these other guys on xda about the battery life browsing. Some are going to tell you I get 20+ hours but what they don't tell you is how they barely use it to browse like we do. A guy that uses public transportion 90% of the time has tested this battery when it comes to long web browsing.
I hate "Top Flight Security Mods"
gabe2gg said:
I was interested in this phone and was wondering the battery life web browsing on this phone.
Thanks
Click to expand...
Click to collapse
also depends on how you are connected to data. on 3g about 4 hours is max for me drops to 2.5. to 3 hours for wifi and 4g.
The batter life is generally good..BUT it depends on factors such as the sites you visit..to put it plainly..Black is your bestest friend..red is your 2nd best friend, and green is your friend on the side, Blue is the friend you don't like and White is your enemy...
So let me summarize with a vague estimation...
Black uses up 0 energy.
Red uses up 1X.
Green uses up 2X.
Blue uses up 3X.
White uses up 1X+2X+3X=6X
Full screen at white at max brightness uses up around 1.13 watts for the entire screen..
On max brightness if we limit ourselves to a standard say 3.7", white at max brightness uses up 0.72 watts..in comparison, max brightness white on an LCD with 3.7" is 0.46 watts..aka we are using 2x the energy on our screens on all white pages..common when web browser loads or even most pages..
So if you change the background to black or use night mode..youd see HUGE improvident..I remember before reading how someone with a N1 doubled their battery life by making the screen only display shades of red and no other color...
I just bought a Note 4 and i would like to know if someone knows how to put a black theme on the stock ROM
Because its a OLED display this will improve battery performance right?
Its my only anoying thig right now, i have come from a Note 3 and still dont see any improve on battery life
Its true on these screens any white or colour will use up more power to make the screen vivid to the eye.
I personally have a black screen with a bombay cat eyes in full hd.
I think it depends upon how you use your screen as watching a vid or you tube will show the screen usage as high.
I have mine set on Auto brightness and this makes a big improvement of battery usage.
One bug I have found is certain apps make my screen brighter so when I switch to another app or function sometimes my screen is too bright until I go back to the Auto brightness setting and press it again to dim the screen. But I'm getting use to closing all apps after being on the phone to muck around.
Guess the multi app screens benifits outweight the extra power used to keep them on in stanby mode!
I still have 10% battery after a full day of use. You should go to the battery thread somewhere in here lots of tips and tricks to get the battery into saving mode without actually using the battery saving mode LOL!
TBF what makes me chuckle is I rekcon 90% of people who have battery issues is because of chargers, cables and bad batterys after all they are massed produced.
If I have any issues concerning hardware I just give samsung a ring and work it out as they are more willing to trying replacing batteries. cables and chargers first than getting the device back?
The battery on this phone is generally good, but some things drain the battery more than I think they should. Standby drain is great (3-5% overnight) but the screen murders the battery. It drops 1% every 4-5 minutes of light tasks such as browsing social media and Chrome, but the drain gets much worse with anything that's more demanding on the processor. For example, 23 minutes of gaming on my PS1 emulator killed 10% of battery, and just 13 minutes of Crossy Road killed 6%.
Is there any way to improve battery life when the screen is on, or is this normal power consumption for a 2k display like this one? For reference, I have it set on auto brightness at the lowest setting to save battery already. Also, my phone gets 4-5 hrs SOT with moderate usage and maybe 30min-1hr of gaming. If it's the latter, I'd take a 1080p screen any day for better battery life...
Turn the brightness down.
Sent from my DROID Turbo 2
imnuts said:
Turn the brightness down.
Sent from my DROID Turbo 2
Click to expand...
Click to collapse
I said I already have it set on auto brightness at the lowest setting
Turn off auto brightness. Other than that, the screen is going to draw a fixed amount of power. Also, resolution has very little to do with how much power the screen uses, it's all panel size and brightness.
Sent from my DROID Turbo 2
Pretty much the only knob you have is display brightness.
Sent from my XT1585 using Tapatalk
imnuts said:
Also, resolution has very little to do with how much power the screen uses, it's all panel size and brightness.Sent from my DROID Turbo 2
Click to expand...
Click to collapse
I thought resolution has everything to do with how much power the screen uses? The way I understood it a screen with a given resolution has the same amount of pixels whether it's 5.5" or 5.7" or some other size, hence phones with different size screens but the same resolution having different PPI's.
JasonJoel said:
Pretty much the only knob you have is display brightness.
Sent from my XT1585 using Tapatalk
Click to expand...
Click to collapse
I turn it on only when I'm outside. Aside from affecting power draw due to brightness, does auto brightness also draw extra battery from having to operate the light sensor constantly as well?
Other than that, I've already been doing everything you guys have suggested. Do you all experience the same type of drain that I do?
The backlight is the primary power user in the screen. It doesn't care if there is 1 pixel or 5 million. The GPU will use more power at higher resolutions, but a 5.5" FHD screen will use nearly the same power as a 5.5" 4K screen.
Sent from my DROID Turbo 2
But OLED displays such as the one on the Turbo 2 don't have backlights, so the higher the resolution, the more pixels the battery has to light up and the more it drains the battery?
The pixels are smaller, and there is less power use per pixel than on a lower resolution display. Will it drain more power? Yes, but the amount is likely negligible.
What I would recommend
I know a little about a lot, When it comes to Android phones and phones in general,
The auto brightness feature always has an effect on battery life I always tell people it is much better to set this manually and to change it when it's needed. Also more modern phone os's allow this setting to be toggled quite easily. As to what screen panel uses more power I don't know a lot about that but I would have to agree with the idea that the higher the resolution the more power it draws. Good luck to you and hopefully we see marshmallow soon around the globe!
Okay. I've also noticed that the screen drains power a lot slower once battery level is below 30%. Has anyone else experienced this? Regardless, I'll calibrate my battery today and report back if it makes any difference or not.
You could also try Lux, it has a lot more options when it comes to auto adjusting the screen.
Anyone tested this themselves? Didnt see it mention in any reviews.
I don't know but it must use close to nothing; the thing is to darn dark on this thing, I can't barely see it. It was a lot brighter in my Note 7, it's useless now.
The G Dept. said:
I don't know but it must use close to nothing; the thing is to darn dark on this thing, I can't barely see it. It was a lot brighter in my Note 7, it's useless now.
Click to expand...
Click to collapse
Not dark at all on my screen. I don't seem to see it moving around at all, though which is concerning to me.
From https://www.notebookcheck.net/Samsung-Galaxy-S8-Plus-SM-G955F-Smartphone-Review.213438.0.html :
The Always-On display is pretty efficient. The smartphone only consumes 0.13 Watts during standby and 0.23 Watts (on average) with the Always-On display.
Click to expand...
Click to collapse
maz-b. said:
From https://www.notebookcheck.net/Samsung-Galaxy-S8-Plus-SM-G955F-Smartphone-Review.213438.0.html :
Click to expand...
Click to collapse
Is it moving on your screen? Didn't move on mine in the 40 mins I left it on so I turned it off.
Semantics said:
Is it moving on your screen? Didn't move on mine in the 40 mins I left it on so I turned it off.
Click to expand...
Click to collapse
Yesterday it has moved at least two times
On the S7 edge the guys at samsung told me that 1 hour usually takes about 1 percent of battery. Don't know wether the S8 uses the same amount or not. That doesn't sound that much, but at the end of the day this would be something about 10-20 percent.
Gonna get my S8 (hopefully) today - so I can test it.
mmeidl78 said:
On the S7 edge the guys at samsung told me that 1 hour usually takes about 1 percent of battery. Don't know wether the S8 uses the same amount or not. That doesn't sound that much, but at the end of the day this would be something about 10-20 percent.
Gonna get my S8 (hopefully) today - so I can test it.
Click to expand...
Click to collapse
most of what i read people said it was closer to 1% every 2 hours on the s7.
I've got it on
All day
All night
Battery life, while not amazing, hasn't been affected by aod
I keep it on. Most of the time the phone is in a belt pouch and the AoD shuts off when it is in a pocket like environment. The only time it is really on for an extended period of time is while sitting on the wireless charger.
I keep mine on too. Here's my battery life. That's Bluetooth, location, always on display, and high performance settings on.
2 Gmail accounts that are synced (constant work email), Facebook, messenger, GroupMe, Instagram, Snapchat. A few text messages since most of my chats goes through social media.
It is a shame (as far as i can tell) that the battery usage meter does not separate "screen" with "always on display".
My thinking is that the OLED screen is not back lit so it is only each individual pixel using power and since the screen is mainly black this is not a lot.
When the S8 is in a brightly lit room the always on display is brighter lit so will use more power. In a dark bedroom it will use less.
AoD Informal Testing
The official Samsung line is that AoD uses up about 1% of the battery per hour. In other words, AoD will use up about 24% of your battery in 24 hours. That seems to be close to my personal experience with the S7, but it's hard to say. I believe my phone uses about 2.5% of the battery per hour with AoD off, and about 3.5% / hour with AoD turned on. I'm still getting over 24-hours of battery life per charge with AoD on.
There are some comments here along the lines of "it can't use too much battery, because it's so dim" or "it's in my pocket most of the time, so it's not using power." Keep in mind that some of the battery AoD uses is that it turns the proximity and light sensors on every minute or so to determine what the brightness of the display should be, and whether it should be on at all. AoD mode likely uses slightly more battery even if the phone is face down on a desk and not displaying anything.
Some people have said they don't use AoD because they can't see the pixels moving and they're worried about screen burn. I believe the pixel movement is very subtle, and the image doesn't move all around the screen. It just moves enough so that the same pixels are not always being used. When you unlock the phone, then lock it again, the AoD will appear in a completely different spot on the screen and then shift subtly around that same spot. I've been using AoD on and off for 2 years with my S7 and I can't see any trace of screen burn.
Lauren Craig Stephen said:
The official Samsung line is that AoD uses up about 1% of the battery per hour. In other words, AoD will use up about 24% of your battery in 24 hours. That seems to be close to my personal experience with the S7, but it's hard to say. I believe my phone uses about 2.5% of the battery per hour with AoD off, and about 3.5% / hour with AoD turned on. I'm still getting over 24-hours of battery life per charge with AoD on.
There are some comments here along the lines of "it can't use too much battery, because it's so dim" or "it's in my pocket most of the time, so it's not using power." Keep in mind that some of the battery AoD uses is that it turns the proximity and light sensors on every minute or so to determine what the brightness of the display should be, and whether it should be on at all. AoD mode likely uses slightly more battery even if the phone is face down on a desk and not displaying anything.
Some people have said they don't use AoD because they can't see the pixels moving and they're worried about screen burn. I believe the pixel movement is very subtle, and the image doesn't move all around the screen. It just moves enough so that the same pixels are not always being used. When you unlock the phone, then lock it again, the AoD will appear in a completely different spot on the screen and then shift subtly around that same spot. I've been using AoD on and off for 2 years with my S7 and I can't see any trace of screen burn.
Click to expand...
Click to collapse
The pixels do most def move I have witnessed it....
I use my aod when its dark normally between like 8 pm and like 1 times im up at night other than that I dont use it
I read some where on the gear watches about aod and the strict limits samsung has in place to prevent burn and battery waste.
As fast as these devices can charge battery should not be an issue for any one any more lol