Database Develop

[Q] General Battery Life Questions - Looking for Other Input

Have new Sprint HTC One and when first using it out of the box, battery life seemed to be real good.
Mods I have made.. Unlocked and am running OMJ's custom ROM.
Here is what I am questioning now.. (my 14 days are almost up):
I leave it charge all night and first thing in the morning, I use it for 15-20 minutes catching up on mail, facebook and news. I am connected to wifi in the home. What I am experiencing is a 6% battery drain from this pretty consistently and display on auto brightness in a dark room in the morning. Last night I set power saver to including cpu, diaplay and data connection. I had the display set dimmer than normal/what the auto brightness would be. I experienced the same 6% drop this morning.
I am not sure what to think, its kind of disconcerting to think you wack 6% of battery before the first cup of coffee.
I have no data, but am wondering if anyone has see lesser batter just from unlocking?
OMJ's ROM is pretty stock, so I would not think that is causing any issues.
I am looking to see what others are experiencing from there initial 15-20 minute usage.
I am open to any input that could help me conclude that there is not an issue with the phone so I can stop worrying about meeting the 14 day return deadline.
Edit: Adding images and info to attempt to create a baseline for others to compare to. Images are from GSam Battery Monitor available in the market.
The images show 30 minutes of use after unplugging from a full charge, Power Saver off, Brightness set to Dim and using WiFi. Screen using 18% and Apps using 75%... you can also see the specific apps being used.
It would be great if others could mimic and provide their results. This would allow us all to have something to compare to.

it could just be the battery technology. i know with some laptops here at work they dont really "fully charge" the battery to increase the battery life span. so this could be a normal thing. For me personally im more concerned about the phone lasting atleast through the whole day before i have to charge it.
http://en.wikipedia.org/wiki/Lithium-ion_battery#Charging_procedure

Get battery calibration from the play store.
Sent from my HTCONE using xda app-developers app

Yea I mean I'm not sure how much you use your phone a day but I'm seeing consistently approx 4-4.5 hrs of screen on time a day. Unplug the phone at 7am and plug it in when I got to bed usually around 11pm. Some days if I'm watching a lot of video or playing games I'll have to plug it in around 8pm or so but that isn't too often
Sent from my HTCONE using Tapatalk 4

Anyone want to do a small comparison test?
Set brightness to auto, charge to 100% and then use for 15 minutes checking mail, Facebook, web surfing, or whatever (simple activity, not gaming), in normal ambient room lighting, using WiFi, Power Saver off. Then report your battery level after the 15 min.

obperryo said:
Anyone want to do a small comparison test?
Set brightness to auto, charge to 100% and then use for 15 minutes checking mail, Facebook, web surfing, or whatever (simple activity, not gaming), in normal ambient room lighting, using WiFi, Power Saver off. Then report your battery level after the 15 min.
Click to expand...
Click to collapse
I would lose around 10% from that. I think.

You should calibrate your battery any time you flash a new Rom, so why not try the app I suggested?
Sent from my HTCONE using xda app-developers app

Konfuzion said:
You should calibrate your battery any time you flash a new Rom, so why not try the app I suggested?
Sent from my HTCONE using xda app-developers app
Click to expand...
Click to collapse
Oh, I am all over that. Did the calibration yesterday. I have not noticed a significant difference, but I do agree this is a needed step. Especially when changing between significantly different ROMs. Thanks for pointing it out.
What I am really looking for from others are some comparison results. I have created some pictures this morning and will be adding them to my post, in an attempt to create a baseline that others can use to do the exact same and provide a result. This should allow others and myself to see if there is any significant difference between our devices.

I edited my post with baseline settings and images.
Would be great if others could mimic and post results.

obperryo said:
Oh, I am all over that. Did the calibration yesterday. I have not noticed a significant difference, but I do agree this is a needed step. Especially when changing between significantly different ROMs. Thanks for pointing it out.
What I am really looking for from others are some comparison results. I have created some pictures this morning and will be adding them to my post, in an attempt to create a baseline that others can use to do the exact same and provide a result. This should allow others and myself to see if there is any significant difference between our devices.
Click to expand...
Click to collapse
Hehe Sorry when I read my post it seems kind of snappy and nothing about your reply led me to this conclusion. I understand your looking for a comparison and I think its safe to say I easily use 5-10% of my battery life first thing when I get up and check all of my stuff.

Konfuzion said:
Hehe Sorry when I read my post it seems kind of snappy and nothing about your reply led me to this conclusion. I understand your looking for a comparison and I think its safe to say I easily use 5-10% of my battery life first thing when I get up and check all of my stuff.
Click to expand...
Click to collapse
No problem. I appreciate your input.

Here's my usage. 10 min of xda and around 30 min of listening to the music. Tranquil rom. Thicklizard's kernel.
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Sent from my lair.

volk9029 said:
Here's my usage. 10 min of xda and around 30 min of listening to the music. Tranquil rom. Thicklizard's kernel. View attachment 2208801View attachment 2208803
Sent from my lair.
Click to expand...
Click to collapse
How do you have a extremely low awake time,and your kernel usage is only 0.9%? My unrooted stock kernel runs from 20%-35% at any given time.

racingmatt1 said:
How do you have a extremely low awake time,and your kernel usage is only 0.9%? My unrooted stock kernel runs from 20%-35% at any given time.
Click to expand...
Click to collapse
I use autostarts from playstore to prevent certain apps from starting and running in the background, unless I need them to. Here's another screen shot of around 19 min reading xda and around 40 min listening to the music.
View attachment 2208829
Sent from my lair.

volk9029 said:
I use autostarts from playstore to prevent certain apps from starting and running in the background, unless I need them to. Here's another screen shot of around 19 min reading xda and around 40 min listening to the music.
View attachment 2208829
Sent from my lair.
Click to expand...
Click to collapse
Your link is not working.. Your previous post of performance is awesome! I tried that ROM and loved it but don't like the all black and blue. Maybe I should of spent more time with hit.. Is there a way to make it look like normal colors?

obperryo said:
Your link is not working.. Your previous post of performance is awesome! I tried that ROM and loved it but don't like the all black and blue. Maybe I should of spent more time with hit.. Is there a way to make it look like normal colors?
Click to expand...
Click to collapse
Let's try one more time.
Sent from my lair.

Does anybody know if limiting background processes to zero will help battery life? My phone had 1hr 20min awake times with 12 mins screentime/usage after 8-9 hours.
This was with absolutely no power saving at all, whatsoever. Phone was around 75% after those 9 hrs I believe, with kernel taking 33%, and radio taking ~15. Fresh after factory reset. Only apps were Email, Doodlejump, GSAM, ES, Keep and Swiftkey.
Tomorrow I will turn off auto sync, limit background processes, and turn on power saver/sleep mode. Let's see how much that helps.

Here's what in doing most of the drain comes from having only 1 bar in my new dorm
Sent from my HTCONE using xda premium

Gsmarena review is up with battery results, no fanboy review

http://m.gsmarena.com/lg_nexus_5-review-1011.php
This includes battery results , display labor results , camera results
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Short summary:
Poor battery
Poor Contrast
They confirm that g2 is using an other panel

Numbers make no sense when compared to the LG G2. The LG G2 gets twice the battery life with a battery that is only 30% larger? Apparently LG's software is RIDICULOUSLY efficient. . . .

muyoso said:
Numbers make no sense when compared to the LG G2. The LG G2 gets twice the battery life with a battery that is only 30% larger? Apparently LG's software is RIDICULOUSLY efficient. . . .
Click to expand...
Click to collapse
Yes it does seem rather strange, isn't 4.4 meant to be more efficient in general as well? This should close the gap not increase it!

muyoso said:
Numbers make no sense when compared to the LG G2. The LG G2 gets twice the battery life with a battery that is only 30% larger? Apparently LG's software is RIDICULOUSLY efficient. . . .
Click to expand...
Click to collapse
Take a more efficient screen into the account (the G2's LCDD posts VERY impressive power results), less throttling and some alternatives to Google services. Nexus battery life always sucked on stock, something is up with Google services, they are unoptimized or some ****. Nothing surprising here really.

BoneXDA said:
Take a more efficient screen into the account (the G2's LCDD posts VERY impressive power results), less throttling and some alternatives to Google services. Nexus battery life always sucked on stock, something is up with Google services, they are unoptimized or some ****. Nothing surprising here really.
Click to expand...
Click to collapse
Almost none of that is relevant for the call time test. I just don't get how the G2 with a 30% higher battery can have double the call time.

muyoso said:
Almost none of that is relevant for the call time test. I just don't get how the G2 with a 30% higher battery can have double the call time.
Click to expand...
Click to collapse
There are lot of variables. What goes on in the background, how much resources the dial app takes and what services it starts, how hot the phone gets during call, powering the microphones and speaker - and then there's reception. I trust GSM Arena does the test at the same place, so if the Nexus 5's antenna isn't as good at getting signal as the G2 for whatever reason (different module, different construction, different placement etc.), results can be vastly different.

"Those who favor more natural reproduction will certainly be happy with the Nexus 5 screen, though."
I'm all for natural reproduction....

did not need a review to confirm these details for me.. heh.
phone has left me less than impressed.

Tung_meister said:
Yes it does seem rather strange, isn't 4.4 meant to be more efficient in general as well? This should close the gap not increase it!
Click to expand...
Click to collapse
Who said 4.4 was supposed to be more efficient? What I saw for the past few weeks were random forum members making assumptions. No official statement at all. In addition to that, people making assumptions that skins use more battery. I think a lot of us knew deep down inside this was going to happen, more or less.
Also note, the G2 has the GRAM feature that they advertised as a battery saver.

cyburke said:
did not need a review to confirm these details for me.. heh.
phone has left me less than impressed.
Click to expand...
Click to collapse
Same here. I'm still using my Moto X because the N5 just doesn't do it for me. I pick it up and fiddle with it from time to time but that's about it.

_MetalHead_ said:
Same here. I'm still using my Moto X because the N5 just doesn't do it for me. I pick it up and fiddle with it from time to time but that's about it.
Click to expand...
Click to collapse
What do you like so much about the moto x? I prefer talking to real life people rather than to a phone...

caribouxda said:
What do you like so much about the moto x? I prefer talking to real life people rather than to a phone...
Click to expand...
Click to collapse
I don't even use the touchless control, it's been disabled since day one. I love the screen, the feel in the hand, the build quality, ridiculously good battery life, and the icing on the cake- active notifications. Sure the N5 is slightly faster (barely), but this day and age that's not enough. The Moto X is the full package, the N5 is just... meh. Of course that is just my opinion. If the Moto X wasn't around, I'd likely be singing praises about the N5. But since I have the X to compare it to, it doesn't fare so well.

Comparing the battery results it looks like the biggest difference between Nexus 5 and LG G2 is in video playback and web browsing, so when the screen is on and not as much on 3G talk time, when the screen is off.
So, i wondered how these tests are done and according to here http://www.gsmarena.com/gsmarena_lab_tests-review-751p6.php, it looks like they are done on 50% brightness. But, after searching a bit more, i found this post http://forum.xda-developers.com/showpost.php?p=47174975&postcount=42, which shows that the Nexus screen is fairly brighter than G2.
In the gsmarena review http://www.gsmarena.com/lg_nexus_5-review-1011p3.php, in the comparison table on the bottom of the page, the nexus seems twice as bright as the G2 at 50% brightness.
So, correct me if i am wrong, but where i am trying to conclude is that doing the tests in the same brightness through each phone's settings isn't very accurate and thus the bigger than expected difference between the two smartphones.

giannis_ch said:
Comparing the battery results it looks like the biggest difference between Nexus 5 and LG G2 is in video playback and web browsing, so when the screen is on and not as much on 3G talk time, when the screen is off.
So, i wondered how these tests are done and according to here http://www.gsmarena.com/gsmarena_lab_tests-review-751p6.php, it looks like they are done on 50% brightness. But, after searching a bit more, i found this post http://forum.xda-developers.com/showpost.php?p=47174975&postcount=42, which shows that the Nexus screen is fairly brighter than G2.
In the gsmarena review http://www.gsmarena.com/lg_nexus_5-review-1011p3.php, in the comparison table on the bottom of the page, the nexus seems twice as bright as the G2 at 50% brightness.
So, correct me if i am wrong, but where i am trying to conclude is that doing the tests in the same brightness through each phone's settings isn't very accurate and thus the bigger than expected difference between the two smartphones.
Click to expand...
Click to collapse
I'm with you. Screen battery tests should be calibrated by brightness, not by percentage. Otherwise, dim screens win by default, which is absurd. Nexus 5 display is very bright. VERY. I had to install Lux to just dim it a bit as auto-brightness was too aggressive out of the box.
Having said that, for me battery life is pretty good. I am coming from Galaxy Nexus and N5 gives me close to double battery life in my everyday usage. I'm sure we will see battery saving ROMs pretty soon too, so folks who need to bleed their phones to the last drop will have the opportunity.

I find battery reviews massively subjective - I just want a phone that won't die if I don't charge it after getting out of bed @ 7am, before 10pm.. after a few calls and 2 hrs of screen on, fbook, texts, etc. My N5 has been on battery almost 13hrs now and is at 66%... my old SGII would be at 10%, so personally this is a massive improvement.
If you always want the latest and greatest all around, Nexus phones typically aren't going to fill the boot. If you upgrade your phone every year and a bit or less and are logical enough to factor in price, they will.

Interesting that the G2 is over 4x brighter at 100% brightness than at 50% brightness according to GSMArena. That probably helped its battery life score with them a fair bit.

http://blog.gsmarena.com/apple-iphone-5s-battery-test/
iphone 5s 10 hrs web browsing ..
I love nexus ... but 4 .. seriously ?

_MetalHead_ said:
I don't even use the touchless control, it's been disabled since day one. I love the screen, the feel in the hand, the build quality, ridiculously good battery life, and the icing on the cake- active notifications. Sure the N5 is slightly faster (barely), but this day and age that's not enough. The Moto X is the full package, the N5 is just... meh. Of course that is just my opinion. If the Moto X wasn't around, I'd likely be singing praises about the N5. But since I have the X to compare it to, it doesn't fare so well.
Click to expand...
Click to collapse
Its funny because I came from the moto x and I couldn't disagree more... It just goes to show that everyone is different and likes different things I guess haha
Sent from my Nexus 5 using Tapatalk

Fatelord said:
http://blog.gsmarena.com/apple-iphone-5s-battery-test/
iphone 5s 10 hrs web browsing ..
I love nexus ... but 4 .. seriously ?
Click to expand...
Click to collapse
Iphone 5s screen is also half as bright as nexus 5 at 50% brightness.

For most people this kind of batt life is fine (Stock)

[POLL][BOUNTY] DT2W battery drain fix like LG G2 (bump if you vote)

I'd like to gauge interest in setting a bounty for reverse engineering the touch screen controller chip sleep mode to reduce the screen off battery drain from 2%/hour to <1% like the LG G2 enjoys.
Correct me if I'm wrong, the stock LG G2 ROM accomplished this by sleeping [important chip that watches the capacitive touch screen input] setting it to interrupt mode or something. We use a different chip, with different I2C or SPI bus commands, and don't know which ones would get similar functionality, if any exists on the Synaptics S3350B and associated hardware.
Me, I'd put in like $5 or 10 if a solution with supporting documentation/explanation was found to implement in all ROMs.
Logistics:
Gauge interest with this poll
Gauge/solicit developer interest
Mod or trusted 3rd party like me receives donations to escrow paypal account
If have enough follow through, ...
Someone burns the night oil and finds a fix, publishes results, community of developers verify, submitter receives lump sum
If no fix found within (3 months), paypal donation returned.
thoughts?

If we don't have this so called chip how are we supposed to be able to developed something like it? Not to sound negative but I'm not sure I understand your thinking
Sent from my Nexus 5

Pretty sure it's a limitation on the digitizer.

psycho693 said:
If we don't have this so called chip how are we supposed to be able to developed something like it? Not to sound negative but I'm not sure I understand your thinking
Sent from my Nexus 5
Click to expand...
Click to collapse
it uses another one. We have to keep it awake to listen to the capacitive touch because we don't know how to send it to interrupt mode. Vs. the LG G2, you write a byte to it and it goes to interrupt mode. In my discussions with some of the DT2W firmware developers, that's the key difference.
If we had the full spec sheet on the chip this would be easy. No one has tracked that down.
Alternatively, someone with a little bit more embedded experience than I (ideally someone that has worked on S2W/DT2W) applies intuition and pokes at registers on the SPI address for this chip to see what happens. That's tough, hence the bounty.

well, flar2 apparently has lowered the drain on d2w on his elementalX kernel, but is still testing it. you may want to check out the thread and leave a question there.
Sent from my Nexus 5 using Tapatalk

my battery drains less then 1% an hour as it is, without anything like this..
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simms22 said:
my battery drains less then 1% an hour as it is, without anything like this..
Click to expand...
Click to collapse
Nah, not with S2W or DT2W enabled.

rancur3p1c said:
Nah, not with S2W or DT2W enabled.
Click to expand...
Click to collapse
ah.. i missed that part :angel:

simms22 said:
ah.. i missed that part :angel:
Click to expand...
Click to collapse
lol!

simms22 said:
my battery drains less then 1% an hour as it is, without anything like this..
Click to expand...
Click to collapse
rom?:cyclops:

ludorexmundi said:
rom?:cyclops:
Click to expand...
Click to collapse
lichtis rastakat. but rom nor kernel dont give you extra battery life. battery life is all dependant on your personal usage, your personal setup, your apps installed, and the quality of your phone/data signal.

On cyanogenmod I get less 1% drain per hour, more like 0.3%. I get an average of 1h screen time for every 20% battery lost with wifi on location set to power save, mobile data on H+ always on. From 7 in the morning till 0.30 at night I get to about 35% battery left with is fine and about 4h+ SOT, however I do not use my phone for gaming, mostly texting and whatsapp, 2h of YouTube videos and one hour of Web browsing, and like 40min of voice calls.
Sent from my Nexus 5 using XDA Premium 4 mobile app

Pezmet said:
On cyanogenmod I get less 1% drain per hour, more like 0.3%. I get an average of 1h screen time for every 20% battery lost with wifi on location set to power save, mobile data on H+ always on. From 7 in the morning till 0.30 at night I get to about 35% battery left with is fine and about 4h+ SOT, however I do not use my phone for gaming, mostly texting and whatsapp, 2h of YouTube videos and one hour of Web browsing, and like 40min of voice calls.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
Guys this is about double tap to wake/sweep to wake

simms22 said:
kernel dont give you extra battery life.
Click to expand...
Click to collapse
yeah that's not true. For one custom kernels have higher levels of compiler optimzation that result in the processor executing fewer commands; to governor use and limiting max screen off frequency to 600mhz, locking cores offline all the time; there are plenty of reasons why custom kernels have better battery life that everyone sees.

rancur3p1c said:
yeah that's not true. For one custom kernels have higher levels of compiler optimzation that result in the processor executing fewer commands; to governor use and limiting max screen off frequency to 600mhz, locking cores offline all the time; there are plenty of reasons why custom kernels have better battery life that everyone sees.
Click to expand...
Click to collapse
see thats where you are mistaken. as many people that say that they get great battery life on a specific kernel, there are just as many, if not more, that say the opposite. you can get great battery life on ANY kernel. on every single custom kernel here on xda there will be people that claim that it gives great battery life, and many more that dont claim it. battery life is mostly about your personal use, your setup, and the quality signal you get. everything else makes very little difference. and this is from experience. as a hobby, i test kernels. not just test like most people on xda, but test them thoroughly. i work for trinity kernel, and have for years. i test all the kernels, to see where trinity has to go. i can get wonderful battery life, on any kernel. its all because of my setup and great quality signal reception, not because of the kernels.
now pick a kernel, any kernel, no matter how over developed it is(yes, many kernels are overly developed here and dont actually gain anything considerable), and ill beat it in battery life. what the issue actually is though is that you believe that a magic battery life pill exists, while im more of a realist an know that no such thing exists.

ludorexmundi said:
rom?:cyclops:
Click to expand...
Click to collapse
Stock can achieve that without tweaks

Mawtin said:
Stock can achieve that without tweaks
Click to expand...
Click to collapse
right, there arent any tweaks needed for that at all. just a proper setup will do

simms22 said:
ah.. i missed that part :angel:
Click to expand...
Click to collapse
I was about to chime in with same comment....thanks for being first! . Lol

rancur3p1c said:
it uses another one. We have to keep it awake to listen to the capacitive touch because we don't know how to send it to interrupt mode. Vs. the LG G2, you write a byte to it and it goes to interrupt mode. In my discussions with some of the DT2W firmware developers, that's the key difference.
If we had the full spec sheet on the chip this would be easy. No one has tracked that down.
Alternatively, someone with a little bit more embedded experience than I (ideally someone that has worked on S2W/DT2W) applies intuition and pokes at registers on the SPI address for this chip to see what happens. That's tough, hence the bounty.
Click to expand...
Click to collapse
It may be a hardware limitation. The LCD panel and the touch screen share a power source. It's no problem to set IRQ wake for the touchscreen, the problem is the interrupts are not triggered unless the touchscreen is powered on. I've poked around quite a bit trying to figure out a way to reduce the drain, but no luck.
You are correct that the g2 has a special bit that can be set for dt2w, but even if this exists on the n5, it would b be like finding a needle in a haystack without the spec sheet. Besides, I've added doubletap to several devices and it was sufficient to use IRQ wake. No special bit required.

Note the red line going from PMIC_1 to the LCD panel. The Touch panel shares power with the LCD panel, and it's routed through the panel on its way to the touch sensor. The only other connection to Touch is the i2c bus. Without power, it can't sense touches and trigger the interrupt.
The way I got it to detect touches during suspend was to modify the touch panel driver so it doesn't send the command to power off the panel when sweep2wake or doubletap2wake are enabled: https://github.com/flar2/ElementalX-N5/commit/03411f9859369bf83324716730bccb77014b31a7
Since then, I've messed around with the regulators, off cmds and clocks trying to reduce the power consumption, but drain remains at about 2.5% per hour with the wake features enabled.

Going to use 1080p on this device for a few days

I'm going to downscale the device resolution to 1080p for a few days if the 2K screen really affects the battery that bad.. If you want to do this, download Resolution Changer from Google Play, and set the screen res to 1080x1920 480 dpi, apply and reboot (important to reboot, if not, the UI will be messed up)
Going to edit this in 3 days. Cheers!

Unless you only use up exactly 1920x1080 pixels on the screen battery life is not going to change much.
Right now that resolution just causes the screen to upscale so the only battery savings would be from the gpu working less driving a lower resolution. The screen which is the main batt hog will still be drawing power as per normal.

Unless you are 3D gaming at 2K then there will be little savings if any. 2D is pretty easy to render at 2K Resolution. And the GPU is probably optimized for 2K and NOT 1080p. So you might actually see a performance decrease running lower resolutions like the old days of Voodoo2 GPU on PC. I dont know... benchmark it and see.

Sublation said:
Unless you are 3D gaming at 2K then there will be little savings if any. 2D is pretty easy to render at 2K Resolution. And the GPU is probably optimized for 2K and NOT 1080p. So you might actually see a performance decrease running lower resolutions like the old days of Voodoo2 GPU on PC. I dont know... benchmark it and see.
Click to expand...
Click to collapse
There is no such a optimization for a specific resolution.

Lodix said:
There is no such a optimization for a specific resolution.
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Click to collapse
Good job you work for Samsung and are privvy to their device drivers etc and cleared that up for us.

Jonathan-H said:
Good job you work for Samsung and are privvy to their device drivers etc and cleared that up for us.
Click to expand...
Click to collapse
Exactly that.
To the moderator's, just close this thread before it becomes a cesspool.

scoopdreams said:
Unless you only use up exactly 1920x1080 pixels on the screen battery life is not going to change much.
Right now that resolution just causes the screen to upscale so the only battery savings would be from the gpu working less driving a lower resolution. The screen which is the main batt hog will still be drawing power as per normal.
Click to expand...
Click to collapse
unfortunately, this is the correct response. even though the human eye cannot spot the difference between 2K and 1080p if the screen isn't right on your eyes (there have been several articles about it on XDA portal..interesting reading), lowering the resolution on this device is useless as your phone will power the extra pixles(they are still there) but the GPU just won't process them.
2K was and will be a marking gimmik to sell more phones. just like 64 bit.
hopefully we'll see a 5.5' flagship this year with 1080p- same view as 2K on 5.5' screens and with 6+ SOT easily.

scoopdreams said:
Unless you only use up exactly 1920x1080 pixels on the screen battery life is not going to change much.
Right now that resolution just causes the screen to upscale so the only battery savings would be from the gpu working less driving a lower resolution. The screen which is the main batt hog will still be drawing power as per normal.
Click to expand...
Click to collapse
That is correct, but there's one more thing:
the GPU won't work less. Whatever power is saved not having to draw the full size of the screen, will be spent upscalling the 1920x1080 image to 2560x1440. I bet that this upscalling can draw even more power from the battery than simply let it work on its native resolution.
So, if your intention is to save power, reducing the resolution is a bad idea, and it is totally useless.
The only reason to lower the resolution is if you have eyesight problems.

tal123 said:
unfortunately, this is the correct response. even though the human eye cannot spot the difference between 2K and 1080p if the screen isn't right on your eyes (there have been several articles about it on XDA portal..interesting reading), lowering the resolution on this device is useless as your phone will power the extra pixles(they are still there) but the GPU just won't process them.
2K was and will be a marking gimmik to sell more phones. just like 64 bit.
hopefully we'll see a 5.5' flagship this year with 1080p- same view as 2K on 5.5' screens and with 6+ SOT easily.
Click to expand...
Click to collapse
With Snapdragon 810 forget about it xD
The LG G Flex 2 has a poor battery life taking in mind the Full HD+ 3000mAh + the supposed lower power Snapdragon 810.

Lodix said:
With Snapdragon 810 forget about it xD
The LG G Flex 2 has a poor battery life taking in mind the Full HD+ 3000mAh + the supposed lower power Snapdragon 810.
Click to expand...
Click to collapse
''Thankfully, the battery isn't as persnickety as the rest of the phone: It typically managed about 13 hours on a single charge, all while I was futzing around in HipChat and Hangouts, firing off emails from CloudMagic and playing the occasional documentary in the background on YouTube. When it came time for our standard video-rundown test (all together now: looping a 720p video with screen brightness set to 50 percent), the new G Flex held out for ten hours and 13 minutes before needing a top-up. As it turns out, the charger's no slouch either; it takes the phone from 0 to 50 percent in about an hour, and it'll top off the battery completely in less than an hour after that.''
http://www.engadget.com/2015/02/18/lg-g-flex-2-review/
I'm reading mixed reviews about the LG F Flex 2. however all in all I don't think 10 SOT at 50% brightness is less than amazing (they didn't put a chart showing comparisons to other phones, but personally I don't get more then 5.5 SOT on the note 4 no matter what)

tal123 said:
''Thankfully, the battery isn't as persnickety as the rest of the phone: It typically managed about 13 hours on a single charge, all while I was futzing around in HipChat and Hangouts, firing off emails from CloudMagic and playing the occasional documentary in the background on YouTube. When it came time for our standard video-rundown test (all together now: looping a 720p video with screen brightness set to 50 percent), the new G Flex held out for ten hours and 13 minutes before needing a top-up. As it turns out, the charger's no slouch either; it takes the phone from 0 to 50 percent in about an hour, and it'll top off the battery completely in less than an hour after that.''
http://www.engadget.com/2015/02/18/lg-g-flex-2-review/
I'm reading mixed reviews about the LG F Flex 2. however all in all I don't think 10 SOT at 50% brightness is less than amazing (they didn't put a chart showing comparisons to other phones, but personally I don't get more then 5.5 SOT on the note 4 no matter what)
Click to expand...
Click to collapse
Personal usages are subjective and I don't care about them.
It is not 10hours of SOT in normal usage, it was a test.
In GSMarena where they do pretty well battery Test comparisons, they show a mediocre scores from what you should have expected.

At The same standard-test, Engadget says that Note 4 get 13h.
But 50% brightness on Note 4 is two times higher (291nits) than on the GFlex 2 (152nits).
So results are pretty poor on the Gflex 2 considering the fact that both have the same max brightness.

tal123 said:
.......
2K was and will be a marking gimmik to sell more phones. just like 64 bit.
hopefully we'll see a 5.5' flagship this year with 1080p- same view as 2K on 5.5' screens and with 6+ SOT easily.
Click to expand...
Click to collapse
Once you use phone with Gear VR you will know that even 2K is not enough.
Sent from my SM-N910T using XDA Free mobile app

And you also have to take in mind pentile matrix. A RGB panel with the same resolution looks more shaper.

galaxynote2 said:
I'm going to downscale the device resolution to 1080p for a few days if the 2K screen really affects the battery that bad.. If you want to do this, download Resolution Changer from Google Play, and set the screen res to 1080x1920 480 dpi, apply and reboot (important to reboot, if not, the UI will be messed up)
Going to edit this in 3 days. Cheers!
Click to expand...
Click to collapse
Antutu results:
48715 with 2k resolution
52553 with 1080
Interesting.. but the samsung keyboard size is bad. How can i fix it¿?
Thanks

nacholo said:
Antutu results:
48715 with 2k resolution
52553 with 1080
Interesting.. but the samsung keyboard size is bad. How can i fix it¿?
Thanks
Click to expand...
Click to collapse
I get 52526 at 2K:
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}

Amazing score! It,s possible to get more than 56k in your phone at 1080!!
Enviado desde mi SM-N910F mediante Tapatalk

My N910F scored lower in 1080p then it did in 2k.
The highest score is default resolution.

Help re battery drainage and synapse optimisation

So I'm fairly new to the Android's scene, I've come from a jailbroken iPhone straight to the nexus 6 after doing a load of research on which phone I should get.
The iPhone is so much easier to work with, in it's jailbroken and default state. I've had my nexus for about 3 months now and only now feel alright using the words ROMs, kernals and flashing.
I want to optimise my nexus for maximum battery life, I know I'll have to comprise with animations and processing power etc.
Here are a few sc of how my set up is currently
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
I flashed my current ROM and kernal last night and did not charge over night so I could just see how much drainage there is when its on standby. This morning I charged it up to about 81% and used the phone normally and I've noticed my battery is actually depleting really quickly. Especially when you take into account I had my setting to power saver, and I was using pixel off battery saver and a kernal made for huge battery life.
I know the issue is with wakelock? But I can't find any help and what I can find is far too complicated to follow.
Also, synapse. That thing is a nightmare for a noob like me. If anyone could link me to a thread or website that explains each feature or somewhere where someone has shared their setting for getting the most battery life, I will be very grateful.
Thank you in advance
Sent from my Nexus 6 using XDA Free mobile app

@icameforthehax Thank you for posting the perfect example of how to ask a question! You've provided all of the proper information, in order for someone who can help, to do so. I'm sorry I can't answer your specific questions but I had to comment on the quality of your post. Well done and welcome to Android! :victory:
I'm sure someone with more expert advice than I can provide you on this topic, will help you shortly. :good:
I will suggest this though, look into a third party battery stats/wakelock detector app to more specifically isolate any wakelocks or battery drain. Also, greenify is an excellent option for root access.

well, your play store and android os is way to high on battery percent used! screen should be the #1 battery drainer(or close). other things shouldnt be that far above the percent for screen use.

Evolution_Freak said:
@icameforthehax Thank you for posting the perfect example of how to ask a question! You've provided all of the proper information, in order for someone who can help, to do so. I'm sorry I can't answer your specific questions but I had to comment on the quality of your post. Well done and welcome to Android! :victory:
I'm sure someone with more expert advice than I can provide you on this topic, will help you shortly. :good:
I will suggest this though, look into a third party battery stats/wakelock detector app to more specifically isolate any wakelocks or battery drain. Also, greenify is an excellent option for root access.
Click to expand...
Click to collapse
Thank you for your kind words *tips fedora*
simms22 said:
well, your play store and android os is way to high on battery percent used! screen should be the #1 battery drainer(or close). other things shouldnt be that far above the percent for screen use.
Click to expand...
Click to collapse
Yes, the fact that my screen wasn't the no.1 drainer is why I was concerned enough to start thus thread. Any recommendations as to which app(s) I should use?
Sent from my Nexus 6 using XDA Free mobile app

icameforthehax said:
Thank you for your kind words *tips fedora*
Yes, the fact that my screen wasn't the no.1 drainer is why I was concerned enough to start thus thread. Any recommendations as to which app(s) I should use?
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
android os i wont be too concerned about, since that changes depending on how you use the phone, but the play store.. were you restpring a bunch of apps or something? anyways, recharge your phone fully, then use it like you normally would, then past the battery results here, after a full use of the battery, and ill look at it again. next time past not only the main battery page, but if you press on the chart itll give you more info, paste that as well so we can see your signal, wifi, and if the phone is sleeping.

icameforthehax said:
Thank you for your kind words *tips fedora*
Yes, the fact that my screen wasn't the no.1 drainer is why I was concerned enough to start thus thread. Any recommendations as to which app(s) I should use?
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
Greenify:
https://play.google.com/store/apps/details?id=com.oasisfeng.greenify
As for battery monitor, it will be more based on your personal preference but I have used this:
https://play.google.com/store/apps/details?id=com.gsamlabs.bbm

simms22 said:
android os i wont be too concerned about, since that changes depending on how you use the phone, but the play store.. were you restpring a bunch of apps or something? anyways, recharge your phone fully, then use it like you normally would, then past the battery results here, after a full use of the battery, and ill look at it again. next time past not only the main battery page, but if you press on the chart itll give you more info, paste that as well so we can see your signal, wifi, and if the phone is sleeping.
Click to expand...
Click to collapse
I downloaded a load of apps because I did a clean flash of benzo. I'm currently charging my phone and will return with more screen captures as requested
Sent from my Nexus 6 using XDA Free mobile app

icameforthehax said:
I downloaded a load of apps because I did a clean flash of benzo. I'm currently charging my phone and will return with more screen captures as requested
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
if you downloaded a bunch of apps, thay would explain why. anyways, the first 2 battery cycles after flashing a rom will be a little lower than normal. after, battery should be better.

simms22 said:
if you downloaded a bunch of apps, thay would explain why. anyways, the first 2 battery cycles after flashing a rom will be a little lower than normal. after, battery should be better.
Click to expand...
Click to collapse
Here's screenshots from today, (I changed to Franco kernal)
I'm sure I had 4-5 sot on stock everything. Slightly disappointed
Sent from my Nexus 6 using XDA Free mobile app

icameforthehax said:
Here's screenshots from today, (I changed to Franco kernal)
I'm sure I had 4-5 sot on stock everything. Slightly disappointed
View attachment 3284811View attachment 3284812View attachment 3284814
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
again, you just flashed franco kernel, so youll have to give it a battery cycle or two to regulate, then you can start judging battery life. but your device is goung into deep sleep, so that's good. also, do you always keep wifi on? if you keep it on, but dont use it it'll drain battery. also, what do you have your brightness set to?

simms22 said:
again, you just flashed franco kernel, so youll have to give it a battery cycle or two to regulate, then you can start judging battery life. but your device is goung into deep sleep, so that's good. also, do you always keep wifi on? if you keep it on, but dont use it it'll drain battery. also, what do you have your brightness set to?
Click to expand...
Click to collapse
OK, thank you. The issue is me changing kernals and ROMs etc. I'll cycle my battery 2 time as you've said before I start to judge battery life ty.
Yes I keep WiFi on and use wifi. My brightness is dragged right down with adaptive off, I then change it to 50-70 if I'm outside.
Thank you very much for your help though
Sent from my Nexus 6 using XDA Free mobile app

Synapse is confusing to anyone who doesn't know what they are messing with...try FauxClock or Trickster Mod...much simpler and you won't have to worry about changing things by accident by swiping to the next page as you would with Synapse.

simms22 said:
if you downloaded a bunch of apps, thay would explain why. anyways, the first 2 battery cycles after flashing a rom will be a little lower than normal. after, battery should be better.
Click to expand...
Click to collapse
Simms is absolutely correct - after a rom or kernel flash you need to give the phone a few days to build up its cache etc...only after that can you properly judge battery life and performance.

icameforthehax said:
OK, thank you. The issue is me changing kernals and ROMs etc. I'll cycle my battery 2 time as you've said before I start to judge battery life ty.
Yes I keep WiFi on and use wifi. My brightness is dragged right down with adaptive off, I then change it to 50-70 if I'm outside.
Thank you very much for your help though
Sent from my Nexus 6 using XDA Free mobile app
Click to expand...
Click to collapse
screen brightness is a MAJOR influence in battery life. i generally keep my brightness down below 15%. if i raise my brightness to 30-40%, then ill see 1 hour less screen on time. normally, ill see anywhere from 5-6.5h sot. another major influence is the quality of your phone/data signal. some people, no matter what they do, will never have good/great battery life, just because their signal quality is lousy.

Somewhat off topic, but Better Battery Stats is a great app for getting a much more in depth idea of battery life. It'll also give you all the wakelocks, which can be handy if you looking to do more in depth troubleshooting.