Database Users

Doze Performance

So Doze is supposed to minimize battery drain to almost nothing overnight or when the phone is not in use for a long time. How many people have actually experienced that? I'm not sure what to think, I lose about 1% per hour consistently overnight. That's without greenify or other battery saver methods. But it still seems excessive to me for such a hyped feature. I wonder if future hacks will be able to turn doze on in 1/2 hour instead of 1 hour. What have your experiences been?

1% per hour is pretty good. That means your phone would stay on for up to 100hrs which is more than 5 days. Are you complaining about that?
Sent from my Nexus 5X using Tapatalk

Soundfreak82 said:
1% per hour is pretty good. That means your phone would stay on for up to 100hrs which is more than 5 days. Are you complaining about that?
Sent from my Nexus 5X using Tapatalk
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That is pretty bad if Doze is on given that 1%/hr is a widely accepted standard pre-marshmallow

Hi
aamir123 said:
So Doze is supposed to minimize battery drain to almost nothing overnight or when the phone is not in use for a long time. How many people have actually experienced that? I'm not sure what to think, I lose about 1% per hour consistently overnight. That's without greenify or other battery saver methods. But it still seems excessive to me for such a hyped feature. I wonder if future hacks will be able to turn doze on in 1/2 hour instead of 1 hour. What have your experiences been?
Click to expand...
Click to collapse
Doze only dozes applications from waking up the phone at their will, but still does periodic wakes. It will only make a big difference really if you had a misbehaving app in the first place.
Don't forget that even in the best case that Doze stops all activity from apps, you are still using power connected to the cell and or Wi-Fi, plus power to refresh the memory and other peripheral chips, so 1% an hour could be considered quite good.
Try putting the phone into flight mode over night and see if that 1% drain an hour goes, if all is well you should get around 1 or 2% power loss in 8 hours.
The other think to note is apps can bypass Doze and schedule wakeups regardless, this needs an update to the app for Marshmellow. So if you had an app that wanted to wake the phone every 10 minutes to download the latest adverts, it will stop under Marshmellow when Doze kicks in, but they could update their app to use a different API call and go back to waking the device every 10 minutes bypassing Doze. I strongly suspect that the Google Play store will start recognizing this API call and may start warning about apps that are battery drains, so the user can make a better decision, otherwise Doze will have a short term benefit as apps work around it.
Regards
Phil

Doze is working really well for me. Battery drain overnight seems to almost be non existent. I went to bed with 51% battery life on my phone. I woke up roughly 7 hours later and it was still at 51%.
Sent from my Nexus 5X using Tapatalk

Yeah I had only 4% drain after 8 hours overnight.

PhilipL said:
Hi
Doze only dozes applications from waking up the phone at their will, but still does periodic wakes. It will only make a big difference really if you had a misbehaving app in the first place.
Don't forget that even in the best case that Doze stops all activity from apps, you are still using power connected to the cell and or Wi-Fi, plus power to refresh the memory and other peripheral chips, so 1% an hour could be considered quite good.
Try putting the phone into flight mode over night and see if that 1% drain an hour goes, if all is well you should get around 1 or 2% power loss in 8 hours.
The other think to note is apps can bypass Doze and schedule wakeups regardless, this needs an update to the app for Marshmellow. So if you had an app that wanted to wake the phone every 10 minutes to download the latest adverts, it will stop under Marshmellow when Doze kicks in, but they could update their app to use a different API call and go back to waking the device every 10 minutes bypassing Doze. I strongly suspect that the Google Play store will start recognizing this API call and may start warning about apps that are battery drains, so the user can make a better decision, otherwise Doze will have a short term benefit as apps work around it.
Regards
Phil
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Click to collapse
that was a great explanation, also I do think 1% per hour is bad since like someone already stated that I've had phones that would drain about that without marshmallow. Also those other people who replied I would really like to know how you get such little battery drain, do you guys have a lot of apps installed? I unplugged today around 5 am and woke up around 10 am with 95%. I have about 60 apps and 3 email accounts (1 yahoo which is set to sync manually).
Personally I am trying to sort my battery issues with this phone as some are getting great battery life (5 hours sot with over 24 hours off charge) while others are barely hitting 3 hours like me. Also I would think doze would be better than what I am experiencing.

How long have you had the phone for? AFAIK it can take a few days for Doze to "learn" how to optimize (reduce) battery drain. You may find it gets better over the course of a week or so. If you check the "detailed" battery stats (click the first battery graph) you should see little to no "awake" time overnight when you'd expect Doze to kick in - e.g see this link as an example: https://drive.google.com/open?id=1wjguaIIcGgUZn7w-KXnY3MJ0qTK0rUCWiA
Otherwise try as @PhilipL suggested and run in aeroplane mode overnight.

Doze is working as advertised here. On my 5x and my N5 as well.
Sent from my Nexus 5X using Tapatalk

Hi
aamir123 said:
that was a great explanation, also I do think 1% per hour is bad since like someone already stated that I've had phones that would drain about that without marshmallow. Also those other people who replied I would really like to know how you get such little battery drain, do you guys have a lot of apps installed? I unplugged today around 5 am and woke up around 10 am with 95%. I have about 60 apps and 3 email accounts (1 yahoo which is set to sync manually).
Personally I am trying to sort my battery issues with this phone as some are getting great battery life (5 hours sot with over 24 hours off charge) while others are barely hitting 3 hours like me. Also I would think doze would be better than what I am experiencing.
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Click to collapse
It could be your location and the cell signal you are receiving, sometimes even if you have a good signal you still might be evenly served by 2 or 3 masts and the phone keeps swapping between them, if you don't have too good a cell signal, the phone will be using more power during standby. The only way to tell for sure is to put the phone into flight mode overnight.
One thing to note, you will only get the maximum screen on time if you use your phone a lot, i.e. all the screen on time is used during a 12 hour day after a full charge. If you are only using say 30 minutes one day, 20 minutes the next and so on, your total on screen time achieved will be less than many are saying they get, this is because more power is spent over time on background tasks and syncing, leaving less for actual on screen time. My previous Nexus 5 for example, sometimes I would go 4 days without needing to charge it, but my actual on screen time was only an hour or so.
Perhaps crudely speaking, 1 day of very light usage may see enough battery power expended on back ground tasks to see 1 hour sacrificed of on screen time.
Usually it doesn't matter how many apps you have installed, that in itself doesn't use any battery, of course if those apps are constantly pinging back home to some server, then that is how power is used. Doze will be helping with those apps over night and other quiet periods.
Regards
Phil

PhilipL said:
Hi
It could be your location and the cell signal you are receiving, sometimes even if you have a good signal you still might be evenly served by 2 or 3 masts and the phone keeps swapping between them, if you don't have too good a cell signal, the phone will be using more power during standby. The only way to tell for sure is to put the phone into flight mode overnight.
One thing to note, you will only get the maximum screen on time if you use your phone a lot, i.e. all the screen on time is used during a 12 hour day after a full charge. If you are only using say 30 minutes one day, 20 minutes the next and so on, your total on screen time achieved will be less than many are saying they get, this is because more power is spent over time on background tasks and syncing, leaving less for actual on screen time. My previous Nexus 5 for example, sometimes I would go 4 days without needing to charge it, but my actual on screen time was only an hour or so.
Perhaps crudely speaking, 1 day of very light usage may see enough battery power expended on back ground tasks to see 1 hour sacrificed of on screen time.
Usually it doesn't matter how many apps you have installed, that in itself doesn't use any battery, of course if those apps are constantly pinging back home to some server, then that is how power is used. Doze will be helping with those apps over night and other quiet periods.
Regards
Phil
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Thats the thing I get about 2.5 hours sot in about 12-14 hours and have to recharge before the night is over. Of course quick charge helps but I really don't want to rely on something like that. Also I'm wondering if wifi calling on will help with battery or will it be like the iphone where it'll just drain more battery? Gonna have to play with it and see what I can improve on. Also noticed that chrome has been using about 15-25% battery on any given day. I do use it as my main browser but that still seems excessive so may try a different chrome iteration if it keeps up.
Thank you to everyone that has helped and hopefully this can be a come all thread for people with questions about or problems with Doze.

Hi
aamir123 said:
Thats the thing I get about 2.5 hours sot in about 12-14 hours and have to recharge before the night is over. Of course quick charge helps but I really don't want to rely on something like that. Also I'm wondering if wifi calling on will help with battery or will it be like the iphone where it'll just drain more battery? Gonna have to play with it and see what I can improve on. Also noticed that chrome has been using about 15-25% battery on any given day. I do use it as my main browser but that still seems excessive so may try a different chrome iteration if it keeps up.
Thank you to everyone that has helped and hopefully this can be a come all thread for people with questions about or problems with Doze.
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What brightness setting, as that can make quite a difference?
Regards
Phil

PhilipL said:
Hi
What brightness setting, as that can make quite a difference?
Regards
Phil
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Adaptive brightness less than 50%

I'm getting 3 to 4% drain during 7 hours overnight, working well for me.
Sent from my Nexus 9 using Tapatalk

Hi
Did a test last night, charged the phone to 100%, put it into flight mode and went to bed, checked it this morning and still at 100%.
Regards
Phil

PhilipL said:
Hi
Did a test last night, charged the phone to 100%, put it into flight mode and went to bed, checked it this morning and still at 100%.
Regards
Phil
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Click to collapse
Now you need to find what is draining your battery overnight when not in Flight mode. I suspect you will find either Google Services or Google Play services not releasing the modem or something similar.

When I installed Cerebus it asked to turn off battery optimization. My guess is that is Doze could be wrong though. It was the only app that asked. So far battery life is better then the N6 that I had a Amplify running on.

km8j said:
That is pretty bad if Doze is on given that 1%/hr is a widely accepted standard pre-marshmallow
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Click to collapse
Might be a standard if everything worked perfectly, which I have yet to see. With this new architecture, you are guaranteed it. I love it.

I lost about 1% in 3 hours last night with WiFi calling on. Maybe it has to do with poor coverage. Last night I did end up with 3.5 hours sot which I think was my highest. So in the past few days I have factory reset and turned on WiFi calling.
Now I need to optimize my browser usage, chrome was talking more than screen was ~20%. Using #nochromo now and not much better.

Battery went from 66 to 64% last night in 8 hours.. #dozeisdope
Sent from my XT1563 using Tapatalk

How many of you experiencing high android system battery drain?

While I'm waiting for my verizon s7 edge, I saw a lot of people post screen shot of s7 and s7 edge showing android system use battery over 20%. I just wondering if this is common problem or just happen to several users? This makes me really worry of my upcoming s7 edge.

I have that too. Don't see any issues with it but then again what do I know. Battery is really good still

I feel like it should be excellent.... we always pursue for better right? My nexus 6 is usually less than 5% for android system. Imagine if it's 5% how good the battery life would be.

Yes mine is the same which seems odd to me too. It should be the screen. Like angionicholai said though. Im still getting great battery life. But I would assume knocking down Android system would help a sizeable amount

Yes I certainly am and it's a little concerning but I'm not very worried. Batery life has been quite good and I'm assuming will only get better with OTA updates and our lovely dev's

I feel like every phone has a "catch all" that the basic phone operations fall under, as far as reporting battery drain. I don't think that the battery drain is higher than it should be for my phone, and my android system has shown as high as 36%. Even with that, the phone was still at 62% after moderate use at work all day (10 hours). That's better than any other android phone I've had. My V10 would have been around 20-30% after a day like that.
One thing I have noticed about this phone is that it doesn't sit at 100% for very long at all. Previous phones I've had would sometimes still be at 100% when I got to work in the morning. This phone is at 98% before I get to the car. I think it's all in the way that they report the percentage. This phone appears to be more linear, and other phones try to fake you into thinking the battery is going to last forever by making it stay at 100% for an hour or two.
Try to judge the battery life in a general, overall sense, instead of watching the draw of each application. See if that changes your opinion of the battery life.

Android system is taking up about 30% of my battery use. That's quite high. Strangely, I'm still very happy with my battery life. Probably because I haven't had a phone with a 3600 mAh battery before, and I'm getting 5 hours of SOT out of the box, without any attempt to save power. Plus my last phone was the S6.
Having said that, I might start experimenting with things to see if Android system can be tacked down. The list of processes running for Android system is quite long.
---------- Post added at 06:33 AM ---------- Previous post was at 06:28 AM ----------
I should also mention that this drain doesn't seem to affect Marshmallow's doze feature. The battery graph flat-lines nicely when I'm not using the phone.

Android System is at 31% for me right now. Definitely the highest on any Android phone i've had. I'm just going to chalk it up to the phone settling in. If it is actually an issue, hopefully they'll address it with an update.

Run Ampre, what is the draw on the battery while it's idle?

Android system is 37% while Android OS is 19% and then Screen is 14% with 1 hour on. Phone has been off charger for 3:30 and is down to 83%. However if you factor the use out that would give me 20 hours and 37 min with 5 hours and 50 min of screen time. I just got the phone Tuesday afternoon so I am hopping after a couple more battery cycles this calms down.

Is it possible that everything was more efficient to drop the battery usage except android sysyem. This would result in a higher percentage showing but in turn its using the same amount as other phones. It would helpful to test of someone could post a picture of their android system usage when battery gets low.

Someone should create a Bugs and Issues thread. And maybe down the road add fixes.

adamj546 said:
Is it possible that everything was more efficient to drop the battery usage except android sysyem. This would result in a higher percentage showing but in turn its using the same amount as other phones. It would helpful to test of someone could post a picture of their android system usage when battery gets low.
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Click to collapse
That's what i've heard is the case.

BennyJr said:
That's what i've heard is the case.
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Click to collapse
It might also be helpful if we could compare end of day Android System battery consumption between the Exynos version and Snapdragon.
Sent from my SM-G935T using Tapatalk

I'm on the S5 until my S7 edge comes in. I sometimes get high android system usage when there's background updates going on or after an OTA update for a few days. Usually it seems to resolve by itself. Maybe give it a few days and see if there's still high drain? Also could be a bug that will be worked out in an OTA update.

Mine has the same thing. I disabled everything possible and the idle drain is really bad. My 6P has system drain at 2% so there's clearly an issue here when my S7E has 30-40% system drain
Sent from my Nexus 6P using XDA Labs

Pilz said:
Mine has the same thing. I disabled everything possible and the idle drain is really bad. My 6P has system drain at 2% so there's clearly an issue here when my S7E has 30-40% system drain
Sent from my Nexus 6P using XDA Labs
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Click to collapse
For discussion, here's my latest use summary. Note, I have location off, wifi scanning off, Bluetooth off.
Sent from my SM-G935T using Tapatalk

GiancarloMorr24 said:
For discussion, here's my latest use summary. Note, I have location off, wifi scanning off, Bluetooth off.
Sent from my SM-G935T using Tapatalk
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I'm not using my S7E until my screen protector arrives outside of being at home because I managed to get a small scratch on the screen already on day 1. I'll post some screenshots of the usage regardless because it's still high,but for now this is my 6P for reference.
Sent from my Nexus 6P using XDA Labs

I thought mine was contributed to the fact I use Adguard's VPN connection, so I didn't think much of it especially since I achieved more SOT than my Note 5 did by 1.5 hours. I typically get 5 to 5.5 hours of SOT.

vahdyx said:
I thought mine was contributed to the fact I use Adguard's VPN connection, so I didn't think much of it especially since I achieved more SOT than my Note 5 did by 1.5 hours. I typically get 5 to 5.5 hours of SOT.
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Click to collapse
No doubt that battery life on the S7E seems to be very impressive. I'm just wondering if we can squeeze more out of it if we can figure out what's causing Android System to take up so many resources.
Sent from my SM-G935T using Tapatalk

Stock QC2 Firmware - Battery tips?

Hi Friends,
Just wonder if this is normal for this phone, or you guys could give me some pointers for extending my battery life, specifically the Screen On Time?
I have:
- Stock QC2 firmware - I believe this is Nougat with the March security patch
- No Facebook installed (Disabled)
- I am on data about 8 hours a day, rest is WiFi, Bluetooth for my Watch, and NFC is off
- Generally use a black and red theme
- Doing Ad blocking with the AdClear VPN solution
- Sometimes I make conference calls of under 2 hours
- No games, no YouTube watching
With this set I can barely manage like 3 hours of SOT. Is this normal? What am I doing wrong? Any pointers? Thanks!

3 hours SOT is not normal for unrooted stock. I would suggest downloading GSam Battery Monitor and finding out what is hogging the battery. Note that you will need to manually enable the battery statistics permission with ADB for some reason, but after that it will work like normal.
The top two lines should be Android System and Kernel. If you see any non-system app in the vicinity, that is your likely culprit unless you can explain it with normal usage (for example, Firefox is at the top of the list on mine because I surf the web with it)
Alternately, if nothing odd shows up, you may have a bad battery.

The other thing you might take a look at is shutting off the Location setting that scans Wifi/Bluetooth. That is a massive battery killer

Thank you for the helpful responses guys! I'll try GSam Battery stuff... What are your SOTs BTW?
Thanks!

Also my vibration is always on, my back lit keys are always on, and a 30 second screen timeout time, if it helps? Thanks!

Finally, this is the AT&T model with all the bloat disabled.

I'm typically off charge 18 hours and on data the entire time. I do run a Exchange email app that pushes email, my SOT isn't really huge, maybe around 2-3 hours and I also have BT always on and connected to my S3 Frontier. At the end of my day, I end up with with battery around 50% ish.........
Did you recently update, or did you do a clean install? Sometimes the battery can take a few days to settle in

kangi26 said:
I'm typically off charge 18 hours and on data the entire time. I do run a Exchange email app that pushes email, my SOT isn't really huge, maybe around 2-3 hours and I also have BT always on and connected to my S3 Frontier. At the end of my day, I end up with with battery around 50% ish.........
Did you recently update, or did you do a clean install? Sometimes the battery can take a few days to settle in
Click to expand...
Click to collapse
That's pretty amazing! Yes, clean install and updated from MM to Nougat and then the latest patch.
I've got a battery monitoring app installed now... Let's see what it unveils... I'm thinking maybe it's my settings, syncing and etc, cause I NEVER get the SOTs people report on XDA LOL, on any phone really except the Mate 9 I had...

ProFragger said:
That's pretty amazing! Yes, clean install and updated from MM to Nougat and then the latest patch.
I've got a battery monitoring app installed now... Let's see what it unveils... I'm thinking maybe it's my settings, syncing and etc, cause I NEVER get the SOTs people report on XDA LOL, on any phone really except the Mate 9 I had...
Click to expand...
Click to collapse
I'd give it a few days to settle in.
Battery life is SO subjective. The app's installed and the person's usage habits play a massive part in battery life, and you saying that you never get what others are, speak a lot to that.
The built in optimizers in Nougat seem to do a pretty good job at putting unused battery sucking apps to sleep.

ProFragger said:
Hi Friends,
Just wonder if this is normal for this phone, or you guys could give me some pointers for extending my battery life, specifically the Screen On Time?
I have:
- Stock QC2 firmware - I believe this is Nougat with the March security patch
- No Facebook installed (Disabled)
- I am on data about 8 hours a day, rest is WiFi, Bluetooth for my Watch, and NFC is off
- Generally use a black and red theme
- Doing Ad blocking with the AdClear VPN solution
- Sometimes I make conference calls of under 2 hours
- No games, no YouTube watching
With this set I can barely manage like 3 hours of SOT. Is this normal? What am I doing wrong? Any pointers? Thanks!
Click to expand...
Click to collapse
I notice one thing, when i connect my Gear 2 by bluetooth battery on phone less about 10-15% less. With out watch and no FB and FB messenger, NFC on, most of day on data, wifi off, 5-6 hours call ( do to nature of my job) i get around 3.5 hours SOT.
Clicking from Edge of Galaxy

kangi26 said:
I'd give it a few days to settle in.
Battery life is SO subjective. The app's installed and the person's usage habits play a massive part in battery life, and you saying that you never get what others are, speak a lot to that.
The built in optimizers in Nougat seem to do a pretty good job at putting unused battery sucking apps to sleep.
Click to expand...
Click to collapse
I agree bud, so I think my usage pattern must be horrible, cause from the earliest Androids like Droid Incredible to Axon 7 and S7 Edge and others, I never get what people mention. And some of their claimed usage is ridiculous, they say they play games all day, LTE, Videos and still get like 5 hours or etc... Boggles my mind. My biggest battery hog I suspect is my VPN based AdGuard, maybe the vibration, but compared to gaming and etc, they sound so insignificant.
norbarb said:
I notice one thing, when i connect my Gear 2 by bluetooth battery on phone less about 10-15% less. With out watch and no FB and FB messenger, NFC on, most of day on data, wifi off, 5-6 hours call ( do to nature of my job) i get around 3.5 hours SOT.
Clicking from Edge of Galaxy
Click to expand...
Click to collapse
Yeah, that's more like my usage. Without my Watch, this may be the case. I don't use NFC. Thanks for sharing your experiences.

jshamlet said:
3 hours SOT is not normal for unrooted stock. I would suggest downloading GSam Battery Monitor and finding out what is hogging the battery. Note that you will need to manually enable the battery statistics permission with ADB for some reason, but after that it will work like normal.
The top two lines should be Android System and Kernel. If you see any non-system app in the vicinity, that is your likely culprit unless you can explain it with normal usage (for example, Firefox is at the top of the list on mine because I surf the web with it)
Alternately, if nothing odd shows up, you may have a bad battery.
Click to expand...
Click to collapse
This is a actually normal for USA SAMSUNG battery which is why no1 should get Galaxy S7 on USA carriers battery is even 100 maH smaller at 3500. Battery is always crap usa versions. And I am stuck in them nougat is bad for battery nothing you can do but downgrade to Android 6.0.1 with Odin. Best battery I can upload a vid for proof att Samsung S7 edge battery sucks and so will all USA carriers s8 never buying Samsung again GG. Switch phones best option iPhones have best battery but I hate them. I'd go for a phone with biggest mAh in specs and read reviews for battery. If downgrading doesn't work sorry for all Samsung lovers who read this it's just fact if you actually compare USA version to international. Battery on international is 92 ish hours not even close on USA version +1 sorry for my rant. Second best option I went to zero lemon and got a battery charging case that was like 10000 something maH and I never loose battery because I keep case on entire time makes phone weigh 4 pounds tho

BaconSeeds said:
This is a actually normal for USA SAMSUNG battery which is why no1 should get Galaxy S7 on USA carriers battery is even 100 maH smaller at 3500. Battery is always crap usa versions. And I am stuck in them nougat is bad for battery nothing you can do but downgrade to Android 6.0.1 with Odin. Best battery I can upload a vid for proof att Samsung S7 edge battery sucks and so will all USA carriers s8 never buying Samsung again GG. Switch phones best option iPhones have best battery but I hate them. I'd go for a phone with biggest mAh in specs and read reviews for battery. If downgrading doesn't work sorry for all Samsung lovers who read this it's just fact if you actually compare USA version to international. Battery on international is 92 ish hours not even close on USA version +1 sorry for my rant. Second best option I went to zero lemon and got a battery charging case that was like 10000 something maH and I never loose battery because I keep case on entire time makes phone weigh 4 pounds tho
Click to expand...
Click to collapse
Thank you for sharing your thoughts, bud, I think I would agree, this must be reality. An update for me, seems like getting rid of the VPN based Adblocker has helped battery. Last night, I finally got 4 hours SOT, but that was with the VPN app. Trying without it all day, let's see how it goes.
BTW, hands down, the best battery I have ever seen in the US is on the Huawei Mate 9, even on Nougat. The HUGE battery helps, but legitimately, I was getting 7 hours of SOT.
Thanks guys!

Got the attached SOT after turning off the VPN based ad blocker and using it as needed, rather than on the whole time... Is this closer to normal? ?

I only get 3-4hrs SOT but it is connected to my huawei watch and music is playing when it connects to my bluetooth fm transmitter in my car. I also usually have it plugged in while driving. The best battery life SOT I've seen is on the moto z play. My sister has that phone and she got almost 9hrs SOT. Usually gets at least 7. Someone got over 10.

Why I went back to Marshmallow (Answer: Battery Life)

So I had Nougat ever since it came out and used it a lot, but went back to Marshmallow a couple of days ago because of:
...Battery life. No matter what apps, settings, versions (B360, B380, B381), recommendations etc. - Battery life is simply better and more reliable on Marshmallow. Yes, I know, I did factory resets, downgrade, upgrade via OTA, deactivated this and that, pretty much everything you read on the threads here and elsewhere, it still couldn't catch up to Marshmallow. Don't get me wrong, battery life on Nougat is not terrible - I even convinced myself over the months that it is pretty much the same or even better, but that's simply just wishful thinking. As soon as I downgraded I could notice a significant improvement.
What do I mean by improvement? For once it is more reliable meaning I know what I get. On Nougat I had days where I got 3 hours SOT, then 4 or 5 on others. I had 2 percent stanby drain per hour, then 5, then 1 - it was just more random. On Marshmallow I always get pretty much the same. Stanby drain of 1 percent or less per hour and SOT of 6 or more hours (I'm at 3:40 SOT at the moment with 18 hours and 45 minutes since the last charge and exactly 50 percent battery left). So not only is it more reliable, it also gives me more SOT and lower standby drain.
Regarding the standby drain: When installing apps like ForceDoze on Marshmallow, it lets the device enter Deep Doze the minute I turn off the phone (meaning I often have deep doze rates of above 98%) which leads to little to almost no standby drain without losing any benefits (notifications still come through when added to the whitelist). Deep sleeps rates are also above 90 percent. With Nougat deeps sleep rates are only around 80 percent (given the same apps, settings etc.) and doze rates are much worse. Yes, I know all about light and deep doze, but light doze doesn't start until 5 minutes after the device is turned off (even with apps like ForceDoze) and those 5 minutes add up, especially if you are checking your device often. Also, it doesn't enter deep doze which arguably consumes less power until much later (often hours) and there is also no way I could change that with ForceDoze or Greenify. What's more, the ForceDoze setting of "ignore device movement" actually works on Marshmallow but didn't reliably work on Nougat meaning the deivce enters and stays in deep doze the minute you turn off your phone even if you are moving or driving etc. This made the difference between Marshmallow and Nougat even greater for me when driving or walking around town.
One additional thing I noticed. is that Android System and Kernel (Android OS) usage was higher on Nougat than on Marshmallow, which also worsened battery life on Nougat for me. Again, this could be reliably replicated with the same apps, settings etc.
Granted, everything else is pretty much better on Nougat (speed, UI, notification bar, lock-screen, security updates, additional features etc.), but if you value battery life above everyhing else (which I do), I still think Marshmallow is the best on the Honor 8 and, frankly, I don't see the point of updating to a newer version of Android if it doesn't come with at least the same battery life, as it is one of the most central features of a phone. I don't know and don't really care whether it's Nougat itself or Honor, I just hope that eventually (maybe with B38X or B39X), battery life will fully match that of Marshmallow. What do you guys think? What's your experience?

I never used MM longer than a day or two before upgrading to N, so I can't comment on which is better, but I can confirm that (with N) I've seen random days where the battery drain is unreal during standby, and other days when it hardly drains at all during standby. But ever since I performed a factory reset after upgrading to N, the drain has been very predictable. Standby drain is minimal and SOT is 6+ hrs. Hard for me to complain when I couldn't get that much SOT from the Sony Xperia Z3 Compact on KK, and that was a battery champ! I finally feel like I'm getting the newest features and great battery life at the same time.
You need a choice for people who never used MM in your pole to make it more accurate.

My wife just got her Honor 8 today. It's on Marshmallow. Mine is on the latest Nogat. Each update killed my battery life not significantly but noticably. I can relate to you wanting to downgrade.
While I never had an Honor 8 with Marshmallow, I was about to update her phone to the latest until I saw this thread and am glad I didn't. If Oreo fixes battery life issues, I'll happily update both our phones to it.
For her, this is her first Android and is coming from Apple. Last thing I wanna do is give her an excuse (battery life is a great one) to go back to Apple.
And the funny thing is....she doesn't care about the app tray like most of us Android users lol
Let's see how this pans out!

tiguy99 said:
My wife just got her Honor 8 today. It's on Marshmallow. Mine is on the latest Nogat. Each update killed my battery life not significantly but noticably. I can relate to you wanting to downgrade.
While I never had an Honor 8 with Marshmallow, I was about to update her phone to the latest until I saw this thread and am glad I didn't. If Oreo fixes battery life issues, I'll happily update both our phones to it.
For her, this is her first Android and is coming from Apple. Last thing I wanna do is give her an excuse (battery life is a great one) to go back to Apple.
And the funny thing is....she doesn't care about the app tray like most of us Android users lol
Let's see how this pans out!
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An older battery compared to a new one. One lasts longer, that's so crazy to think batteries might depreciate over time. ?
I bet you think you can kill your battery by leaving it plugged in too.

agraceful said:
An older battery compared to a new one. One lasts longer, that's so crazy to think batteries might depreciate over time. ?
I bet you think you can kill your battery by leaving it plugged in too.
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?
I like this guy.
Good to see there's still a few "passionate battery life" folks left on XDA.
I was almost starting to forget how good it felt to run into another one of you.
Keep hope alive my brother!
Keep hope alive

Galaxy S8 Android Oreo battery life thread

I flashed the leaked Android Oreo OTA to my Verizon Galaxy S8 and am experiencing pretty terrible battery life. I'm getting about 2 1/2 hours of SoT which I find bad for 2018. Meanwhile, my Verizon LG V30 with Nougat is getting 5+ hours of SoT which drives me crazy. Any tips to improve? Also, how's your battery life with Oreo on your S8?

I haven't taken the dive for the Oreo beta based ROMs but have been following the threads and the consensus is that at present Oreo is no better than N, it actually seems to be a little worse for most, hence I'll wait for a while still before jumping to O, give it more time for fine tuning on the S8 by developers etc. just my opinion, plus I get 6 odd hours of SoT on my N custom ROM so I have no urgency to go to O until its more polished.

Terrible, i updated mine couple of weeks ago and noticed about this battery issue, it drains fast despite of disabling the likes of location, reducing the brightness, bluetooth. i informed samsung about it. Before i used it outside with a (-3 temperature since i live in Finland), it was fully charged 100%. I only used it NOT more than 5 minutes for videoing and taking pictures and that's it, i stayed outside for more than an hour. When i checked my battery it was 56% ! I know that cold temperature diminishes the battery performance but not to extent of that emptying the battery in half:

Luukeri said:
Terrible, i updated mine couple of weeks ago and noticed about this battery issue, it drains fast despite of disabling the likes of location, reducing the brightness, bluetooth. i informed samsung about it. Before i used it outside with a (-3 temperature since i live in Finland), it was fully charged 100%. I only used it NOT more than 5 minutes for videoing and taking pictures and that's it, i stayed outside for more than an hour. When i checked my battery it was 56% ! I know that cold temperature diminishes the battery performance but not to extent of that emptying the battery in half:
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After I updated to Oreo I had horrible battery life as well... It one time dropped about 20% when the phone was resting with the screen off in the couch.
I disabled everything bixby related. Force closed, uninstalled updates, and disabled in every way possible.
Now I get decent battery life. I live in Sweden, we have -4°c today, and the phone worked just fine even outside. No significant battery drop.

Nezzox said:
After I updated to Oreo I had horrible battery life as well... It one time dropped about 20% when the phone was resting with the screen off in the couch.
I disabled everything bixby related. Force closed, uninstalled updates, and disabled in every way possible.
Now I get decent battery life. I live in Sweden, we have -4°c today, and the phone worked just fine even outside. No significant battery drop.
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Is Android System percentage higher than normal? And what about screen on time on daily usage?

jojojmtk said:
Is Android System percentage higher than normal? And what about screen on time on daily usage?
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I haven't really measured it. But I got that fix update for the first CRAP update and I'm back to horrible battery life.

Hei,hello,hola,
I'm still struggling with my s8 battery life. Am I missing something to tweak. Can anyone give me more pointers to do. Help is more than appreciated.

Luukeri said:
Hei,hello,hola,
I'm still struggling with my s8 battery life. Am I missing something to tweak. Can anyone give me more pointers to do. Help is more than appreciated.
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you can try flash a custom kernel , are you using stock or custom rom ? which firmware?

I'm using the stock version. I'm not that tech expert to modify it although my phone is at developer version. Anything I can do more?
Thanks for your reply btw.
Ariel