Related
My battery has been doing really good lately actually. It makes me feel good when people are like ah i need to charge my phone and i look and i still have around 80% and by the end of the day i still have around 50 or sometimes 60%. My old G1 would be at around 20 by the end of the day. Just thought i would share something positive amidst all the negativity
Sent from my captivate so excuse the spelling mistakes
Add me to that list. Ive been doing some tweaking to see how much battery life I can get . Just checked and after 8 hrs unplug time Im at 94%
what roms/tweaks have you done? how have you used your phone?
1. all black background
2. disabled syncing and background data
3. disabled gps
4. disabled sound and haptic feedback
5. launcher pro tweaks (less smooth animations)
6. threw it on airplane mode while i sat in class
7. eclair. i hear custom roms are huge battery drainers
8. brightness on lowest all the time (disable smart brightness option)
battery performance while on standby is surprisingly good. sure these settings may not allow you to get the most out of your phone but if you are ever in a situation where you have to get absolutely the most life out of your phone you know what to do.
disellusional said:
what roms/tweaks have you done? how have you used your phone?
Click to expand...
Click to collapse
I'm currently on a stock ROM after some trouble flashing something else i just went back to stock with ODIN, im too lazy to reroot right now haha, pretty much i just have GPS off, disable syncing, darker backgrounds, I use the Dark XDA theme,i turn Wifi on when i'm home but other than that i have it off. I', just using the stock launcher, turned off all screen animations- it makes everything seem faster- and thats about it that i can think of right now. i use my phone pretty moderate to heavily on a daily basis. mostly for texting and browsing the internet. I also play a few games here and there when i get bored. Hope this helps
I have found the battery life to reasonable on the phone unless I am using it heavily. For example, today I have had it on for almost 15 hours and still have 58% battery left. This is with background data on, monitoring 5 e-mail accounts, some FB usage, some browser usage, a few phone calls, screen brightness set to medium most of the time, some music player usage, and WiFi set to on all day. I very often during the day unlock the phone and sync my e-mail manually for one of my accounts as it is iffy on retrieving and I have been waiting for something to come in.
ONE THING I HAVE NOTICED TO DRAIN: I have had this issue a couple of times. I am running stock, and when I have experienced unusual battery drain it has been down to the same thing each time. The SnsService has been stuck 'restarting' under the running services list. Stopping the service has returned the battery life to where it should be for me (for example yesterday I was down to 50% battery after about 6 hours with virtually no use. Checked SNS and it was as described above, and stopping it brought the battery life back in line to usual for me).
I typically with light to moderate use get around 24 - 36 hours, but I usually recharge each night anyway.
same here
i even have a spare battery and i rarely use it.
if u disable 3g battery life can last u as long as 3-4 days, only if the captivate has that capability to go 2g with a tap of a button
Ive searched around and this seems to be a common issue, I tried the factory reset even the htc battery conditioning where you charge fully turn off then another hour back on for 2min off again and charge for another hour with no positive results, I read online some ppl are getting -1/-2 mah an hour I have never seen single digit in my phone.
I included screenshots of my battery drain even adjusted the app to read 1500mah, anything else i missed in settings? Also went into phone information in the Tests menu set it to auto instead of GSM, also with SetCPU I tried underclocking with little change to mah usage, running out of ideas...
Currently its rooted with GingerBreak, and CM7 with #48 nightly installed, any help would definitely be appreciated.
How many hours is your phone lasting on a single charge?
Lately between 5-7hrs one had about 8 and half hours a handful of times
it's true that if you constantly use the phone nonstop like watching youtube, browsing, playing games, etc. the battery won't last longer than 4 hours without getting an extended battery, heck just using moderateley the battery will be about 50% by the end of an 8 hour workshift, but what I found that will extend the battery life with moderate use are these...
1. Turn of wifi, bluetooth, gps, sync. (contrary to what ppl say on this forum I find that wifi eats way more battery than being on 4G)
2 Disable background data. (The only thing I actually need background data checked is to use the android market or maps when I need to, with it off it's a huge battery saver)
3 In settings choose to use only 2G (This will increase battery life 4x and Tmobile 2G is pretty fast, just like 3G)
4 Download Opera Mini (Since you'll be using 2G to save battery you'll want to surf the web with a browser that is super fast using slow connections, and Opera mini is second to none. You can always turn on 4G when you want to have fast video streaming but then you eat alot of battery again.)
5. Install Auto Airplane Mode (you can turn auto airplane mode on when you're not gonna be expecting calls such as at work or when you don't want to be disturbed, hell, if you just want to save as much battery as possible. Since Auto airplane mode disables the radio and data completey which is the number 1 cause of battery bleed with it on from a full charge unplugged you'll still have a 100% when you wake up your phone after a day.)
6 Install juice defender (free is fine)
7 Don't use Lookout Antivirus (I've found Lookout drains the battery quick, if you want an antivirus that doesn't eat the battery try AVG. I prefer AVG because I notice it does not drain my battery like Lookout.)
This has made my phone last more than a day on stock battery with moderate to light use. If I think of more tweaks I'll add later
This is ridiculous. If you have to turn off all those features, then don't even bother getting a smartphone.
My tips are:
1- Set brightness to auto.
2- Avoid Skype and other apps that usually appear as On going on the status bar.
3- Get rid of any task killer. They actually make the battery life worse. Don't worry about tasks running in the background, the OS takes care of them. If you wanna quit an app, try to look for a quit button by pressing the settings button when the app is on the foreground. Otherwise, just press the back button below the screen until you get back to the home screen (for some reason this seems more efficient than just pressing the home button.)
4- If you don't use IMs, get juice defender and set it to disable data when screen is off. It will turn data automatically on once you turn the screen on by pressing the lock button on the top of your device. Note that this is different compared to auto airplane mode, with Juice Defender you can still receive phone calls and text messages when the screen is off.
Last but not least, consider purchasing an extra battery and/or car charger.
Mine usually lasts for about 12 hours with moderate to high use. Almost all smartphones have short battery life if used heavily.
Sent from my LG-P999 using XDA App
risho said:
Lately between 5-7hrs one had about 8 and half hours a handful of times
Click to expand...
Click to collapse
Yea that's awful. Do you by chance have your brightness set extremely high? And how is the cell coverage where you usually use your phone?
I think all of the advice above is valid and will save your battery. The question is to what extreme do you want to go? I tend to agree with donatello88 that there comes a point when you get so paranoid about battery life that you may as well not have a smartphone because you've turned off most of its features.
Get rid of any task killers, battery monitors, etc. They are simply churning thru clock cycles and that uses more battery. Set email, Facebook, etc to check for updates less frequently. Either use auto brightness or manually set your brightness to about 25-30%. That should b bright enough for everyday use unless your in bright sunlight a lot. Use juice defender if you like. And be wary of antivirus apps. I've heard some can suck ur battery dry.
If you do those simple things and are still getting only 5-6 hours then I'd be taking it back to T-Mobile ... unless of course you're on your phone without ceasing. In that case, what can you expect? Lol
Ok with the tips I just mentioned above, I got a chance to put it to real world test. I caught the bus to my son's grad ceremony and reached there at 4pm ceremony didn't start till 6pm so those 2 hours just surfing the web reading articles and forums I was down to 90% battery. Didn't know how long the ceremony was gonna be so called my sister on video chat using tango and spoke to her for about 20 minutes. Did some more browsing using opera mini set to only use 2g for another 2 hours, my don came out, I took some pics and video of him turned on 4g to video chat again with my duster for about 5 minutes, and after 4 non stop hours of consecutive use with screen on, I'm now at 71% battery life. I'm at the bus stop now on my 12 mile commute home and I'm confident the battery will give me more entertainment until I get home. Awesome! You don't have to believe me, just try out my tweaks and you'll be amazed.
Everyone thanks for all of the help and tips, today was the first day I saw 10hrs+(included screenshots), I had my screen on auto and after some reading saw that with CM7 it doesnt work well so I have changed it down to 20-40% depending on where I am, turned off background/auto sync only turn it on when I need it and uninstalled the app killer I was using also changed a few of the SetCPU profiles.
Im not really a heavy user just wondering if having 3email accounts set to update every hour would be a battery drain too? I mostly text/email during the day and talk about 1-2hrs depending how busy I am at work.
Again I thank everyone for pointing me in the right direction...unfortunately at home I have 1bar to none for service so I do depend on Wifi calling which im sure drains more juice, also at work since it in a high rise not too much cell signal so wifi on most of the day...
[Ultimate GUIDE] Increase your battery life on Android
risho said:
Lately between 5-7hrs one had about 8 and half hours a handful of times
Click to expand...
Click to collapse
Hello risho,
I was having the same kind of battery life... After 3 months of research, I collected all valuable tips.
"Valuable tips" means: tips that do not need constant involvement from your side (you don't need to go switch on/off things, etc..) and also that leave you with a very functional phone (you have location when you need it, you have e-mails flowing regularly enough, etc...)!
With these tips, I am now lasting from 6am to 11pm and at 11pm, remaining battery is 10% at least!
Go and check my thread: [Ultimate GUIDE] Increase your battery life on Android!
Enjoy!
I'm having the strangest problem with my HTC Evo...
I used to get over 22hrs of moderate use (rooted) and ever since flashing any ROM running Sense 3.0 my battery life is affected to the point I'm lucky to get 6 hours of use. It discharges 15% within the first 10 minutes after unplugging the charger and continues to discharge at an increased rate throughout the day.
I unrooted the phone and took it to Sprint to "test" and after 3 hours they gave me back the same exact phone claiming they had "updated" it and everything, including the battery, had tested perfectly fine.
I feel like they are giving me the run around because obviously something is wrong here.
Any ideas as to what is going on here?
Rooting doesn't improve battery life, never did. Think of rooting as gaining admin privileges to a Windows PC, for example.
I think you have a background process running that is taking up a lot of battery, check the Battery Use page or reboot the phone.
I know, but it shouldn't diminish it either. It does gives you a chance to see a potential increase by undervolting, underclocking, ect.
Anways, no background apps running. All display scaled down, GPS off, ect, ect.
I have no clue as to why this sudden decrease in life. And Sprint says the battery is testing "excellent" as is the phone. Obviously something is not right here. Feels like they are being lazy and trying to avoid giving me a replacement.
Evo is known for bad battery usage. Best thing for you to do is get a backup battery.
Lol. I know that too, I'm not new to the Evo. I work with phones, Evo included, on a daily basis at my place of employment.
I'm saying this same battery used to last over 22 hours with moderate use when the phone was rooted and underclocked. Now the phone drains the battery amost instantly.
I refuse to purchase an additional battery to combat a problem Sprint should be fixing. I paid over $500 for this phone and haven't even had it a whole year yet. Something else is going on here...
Sounds like a rom issue, not a hardware one. Those sense 3.0 features and eye candy come at a cost.
Yeah. Sense 3.0 is a battery hog. Try cm7 or something AOSP
ADR6300
yeah, one turne off and reboot, Battery Life TERRIBLE too, i'm lost 10% when reboot
watt9493 said:
Yeah. Sense 3.0 is a battery hog. Try cm7 or something AOSP
ADR6300
Click to expand...
Click to collapse
It's ture ！
Have you tried an app that shows you battery usage over your running apps? May tell you which programs are stealing all the juice
!. Rooting does not have anything to do with battery life...well..not directly..it depends on your kernels, apps, phone settings, etc.
2. I agree, Sense 3.0 seems to drain your battery a bit more than previous Senses... well...you know what they say, beauty has its price..about the AOSPs, they have better battery live but they are not so pretty as the Senses...again...beauty has its price
If it helps the 'Live wallpapers' are known to eat battery, but what it could be is Wifi, if you leave it switched on all the time it may be connecting to open wifi networks without you realising and eating the battery.
Interestingly though, a whole day of use, some wifi a bit of camera and some calls on a wildfire with wifi on, didn't seem to drop the battery much and this is with a rooted phone.
you can try green power
Even though it may sound lame to some of you, the app Juice Defender has actually helped extending the life on battery quite nicely for me...
Another possible route might be to try different Radio/RIL combinations, some can also extend your battery life.
Not to forget, as someone posted previously things like live wallpapers or background process. Task Killers have been known to cause battery drain for instance.
Good luck in your quest for battery life!
Hans
if you go to battery use in settings, youd probably find out whats causing your battery drain
Hi there,
I bought my one plus a month ago, and am getting around 3.5 screen time.
It is disappointing as I see screenshots of people with one plus who are getting 6 -10 hours screen time.
I am on battery saver mode, not using music, whatsApp, wase games or facebook, just a little bit email and browsing.
At night it is not going down a lot, but when I start using the phone, it goes down quite quickly.
(1 percent every 2 minutes, sometimes every minute). It seems to get worse every day.
If I start using GPS or video or music, my battery will be finished by noon.
I replaced the battery, and it is the same.
Attached three screenshots. (Including the night)
Help please?
Thank you!
I share you the same feeling when I see others having impressive battery performance specially screen-on time.
I have exactly the same drain behavior of yours, when my phone in deep sleep its sleep like a baby. but when I wake it its become beast awakening.
I run 3g when I am out and wi-fi at home, also running regular apps, whatsapp,snapchat,2emails,1gmail,instagram,web browsing, auto brightness,greenify. I checked with BBS and WLD but no culprit. I am on stock rom with root for the apps, no system tuning.
So you can see my setup is like most of regular users will do but noticeable difference in term of battery performance. I have no clue
Your battery life is fine, better mine
Who has a lot of SOT usually doesn't turn off/on the screen that much. The secret to achieve a lot of SOT is making long session on the screen (and having few apps, like you). So no worries I'm at 64% now with 1 hour of SOT, but I flash updates (CM 12) everyday and wake up the phone only when I need it, with 1-2 minutes sessions.
hyuratzu said:
Your battery life is fine, better mine
Who has a lot of SOT usually doesn't turn off/on the screen that much. The secret to achieve a lot of SOT is making long session on the screen (and having few apps, like you). So no worries I'm at 64% now with 1 hour of SOT, but I flash updates (CM 12) everyday and wake up the phone only when I need it, with 1-2 minutes sessions.
Click to expand...
Click to collapse
That isn't really true, I have over 100 apps installed and I turn my screen off whenever I'm not actually using it. I'm a heavy user. I get roughly six hours of screen on time.
Transmitted via Bacon
Bad battery life
zevozki said:
I share you the same feeling when I see others having impressive battery performance specially screen-on time.
I have exactly the same drain behavior of yours, when my phone in deep sleep its sleep like a baby. but when I wake it its become beast awakening.
I run 3g when I am out and wi-fi at home, also running regular apps, whatsapp,snapchat,2emails,1gmail,instagram,web browsing, auto brightness,greenify. I checked with BBS and WLD but no culprit. I am on stock rom with root for the apps, no system tuning.
So you can see my setup is like most of regular users will do but noticeable difference in term of battery performance. I have no clue
Click to expand...
Click to collapse
Hi,
Well, at least I am not the only one....
The problem is that it is getting worse every day and now I lose one percent in a minute!
Horrible! I have to charge it twice a day, and I barely use it.
I have no root, am not using any of the apps, only a little bit of browsing, and checking mails.
If I try to use waze for a half of an hour or a little bit of music (max 30min, I get only about 2 hours screen time!
It seems really poor from a brand new battery.
I have no clue what to do, or what is causing it. If anyone have suggestions, i will be glad to hear!
Are you using the stock OPO rom? because I always had a poor battery life, I had all kind of protections to keep battery life but when I saw, from 100 I had 70, it was awful, one solution I saw was to flash one custom kernel, somehow improved my battery life, but the final solution was to use a custom rom, I have experienced better battery life with 5+ roms rather than the ones with 4.x.x, maybe you should taste another android flavor and check if the battery life increases
How hard was it to change the battery? Was it soldered? Where did you get a replacement ?
Batery
dandan112988 said:
How hard was it to change the battery? Was it soldered? Where did you get a replacement ?
Click to expand...
Click to collapse
Hi
I have warranty and they changed it for me.
It didn't help at all.
Bad battery life
BryanHR27 said:
Are you using the stock OPO rom? because I always had a poor battery life, I had all kind of protections to keep battery life but when I saw, from 100 I had 70, it was awful, one solution I saw was to flash one custom kernel, somehow improved my battery life, but the final solution was to use a custom rom, I have experienced better battery life with 5+ roms rather than the ones with 4.x.x, maybe you should taste another android flavor and check if the battery life increases
Click to expand...
Click to collapse
Hi,
Thanks for your comment.
Sorry, I don't understand much in roms ... I bought the chinese version color os, and changed it in fast boot to cm11.
My cm version is 11.0-xnph44s , android version-4.4.4
I believe this is app related. Some apps keep phones awake. I encountered this problem with my S3 because I have lots of apps. But since I made sure I only install apps I absolutely need in my oneplus, I get a fantastic battery life.
Bad battery life
apartmentpasig said:
I believe this is app related. Some apps keep phones awake. I encountered this problem with my S3 because I have lots of apps. But since I made sure I only install apps I absolutely need in my oneplus, I get a fantastic battery life.
Click to expand...
Click to collapse
I don't have so many apps , and I installed all of them. I keep closing apps that are running on the background through the settings.
The funny thing is that it is getting worse every day.
Now my battery is going down one percent in 30-60 seconds!
I don't know what to do anymore.
Hey guys! Been getting around 4h SOT as highest on my device, AOD turned off, 30-50 % brightness, fhd+ and dark theme.
Can get through the day but can't get a minute more than 4h sot which seems weird.
It's not that I think the battery life is absolute ****, I'm okay with it, the thing that sort of "bothers" me is that i see people getting like 6-10h SOT on like 2 days of charge which seems unbelievable to me.
Now on to the question,
is my utterly **** 4g signal preventing me from reaching 6-7 h SOT or is it just that I'm "unlucky" with the battery lottery.
Is it fair to expect a 6-7h SOT if i do decide to root and flash something like a notorious kernel and a rom?
Which I know will permanently void my warranty.
Or should I return the device and swap it out for either another s8+ or something like a g6?
I hope I don't seem too much of a brat ****face but I did lay out tons of cash for this phone, which other than the battery I am incredibly impressed by.
Thank you guys for keeping this forum running, it's been a lifesaver!
Del
underdog_656 said:
Most of these 6-10 hours of sot is nonsense as most of these people don't even use the phone properly only leaving the screen on so that sot would increase rather than using it properly like watching YouTube having a decent brightness etc... Just use your phone as much as you like stop thinking about battery life if it's really a problem get a powerbank. Me my self if I'm at work I use a lot of GPS as I need to travel and I have my screen turned of as I listen to Google maps rather look this will put me at around 3 to 4 hours of SOT or more sometimes depending how much I use the screen. But when I'm at home I use the phone non stop and I get around 5 -7 I always use full brightest all the time full res gaming sometimes youtube etc as you can see the people who get 6 to 10 they don't even use the phone that much so is there a point for them to have this phone if they don't use it to full potential no they might as well get a cheap phone.
Edit:
The only reason I would suggest rooting is if you want to play around with the phone like having a different kernel that allows to change voltage, speed etc
Click to expand...
Click to collapse
This, i can get 20hr sot on my mate 9 if i leave it with screen on, take in account SOT means NOTHING, it just one measure that can be easily manipulated.
I use my phone the way i use and i only judge by the end of the day, how much perfect left and what took the most of my battery life, without caring about SOT at all.
Just now i was traveling to Budapest and made ton of photos and videos with my DSLR and the Mate 9, on sunny days your brightness will be up, shooting 4K videos and taking pictures, using GPS google maps, will make your SOT low, does that mean your battery life is bad? NOT AT ALL
Stop caring about sot and use GSAM monitoring up to understand if there is a rogue app.
I have the S8+ and I see that they have figured out how to root the Snapdragon version. I am not really pressed to root my phone.
The 1st time I used the phone, which was a weekend and mostly WiFi, I got over 6 hours of screen time. However on my work days where I use mostly LTE service and I'm inside an office building, I may only have 3-4 hours of screen time but I will make it home with almost 50% of battery life.
I'm no longer concerned with screen time. If my phone can get me through a full day, then I'm happy with it.
Sent from my SM-G955U1 using XDA-Developers Legacy app
alldino said:
Hey guys! Been getting around 4h SOT as highest on my device, AOD turned off, 30-50 % brightness, fhd+ and dark theme.
Can get through the day but can't get a minute more than 4h sot which seems weird.
It's not that I think the battery life is absolute ****, I'm okay with it, the thing that sort of "bothers" me is that i see people getting like 6-10h SOT on like 2 days of charge which seems unbelievable to me.
Now on to the question,
is my utterly **** 4g signal preventing me from reaching 6-7 h SOT or is it just that I'm "unlucky" with the battery lottery.
Is it fair to expect a 6-7h SOT if i do decide to root and flash something like a notorious kernel and a rom?
Which I know will permanently void my warranty.
Or should I return the device and swap it out for either another s8+ or something like a g6?
I hope I don't seem too much of a brat ****face but I did lay out tons of cash for this phone, which other than the battery I am incredibly impressed by.
Thank you guys for keeping this forum running, it's been a lifesaver!
Click to expand...
Click to collapse
Firstly,
I fully agree with @Derpling post above .( His last paragraph..)
Also SOT, now days, means nothing to me.!
Many years back, i used to be obsessed
with benchmark, battery usage, performance etc.
I also use to root all my device's.
However, presently i have stop been " obsessed"
and accept what is reasonable/acceptable.
eg. battery usage including SOT.
prefomance and stop rooting.
There is plenty work arounds available.
Presently, what i do
is i have a few good battery
apps... Betterbattery, Wakelock detector,
Gsam, I enabled these apps with ADB, to get them working. No root. (Very straightforward one or two liner commands, that's all.)
If i have a rogue app, and my battery use " suffers" i use these apps to id the app. and sort app out accordingly.
eg clear cache /data or uninstall.
Lastly i read online that presently,
more devs are
using " other alternatives" than root.
eg ADB...
to give you similar end results.
Bottom line... I found that in most cases
rooting a device just
creates other/more issues.!.. to fix.!
Now days, for me to root my device ( if ever again)
i must have a very, very good reason to root.
Good luck
willcor said:
Firstly,
I fully agree with @Derpling post above .( His last paragraph..)
Also SOT, now days, means nothing to me.!
Many years back, i used to be obsessed
with benchmark, battery usage, performance etc.
I also use to root all my device's.
However, presently i have stop been " obsessed"
and accept what is reasonable/acceptable.
eg. battery usage including SOT.
prefomance and stop rooting.
There is plenty work arounds available.
Presently, what i do
is i have a few good battery
apps... Betterbattery, Wakelock detector,
Gsam, I enabled these apps with ADB, to get them working. No root. (Very straightforward one or two liner commands, that's all.)
If i have a rogue app, and my battery use " suffers" i use these apps to id the app. and sort app out accordingly.
eg clear cache /data or uninstall.
Lastly i read online that presently,
more devs are
using " other alternatives" than root.
eg ADB...
to give you similar end results.
Bottom line... I found that in most cases
rooting a device just
creates other/more issues.!.. to fix.!
Now days, for me to root my device ( if ever again)
i must have a very, very good reason to root.
Good luck
Click to expand...
Click to collapse
You so right about root, there is a workaround to everything tbh, i use the Mate 9 without root and it's the closest phone in my opinion to perfection, no tweaks needed.
Geekbench SOT all of it are just numbers as it means nothing.
alldino said:
Now on to the question,
is my utterly **** 4g signal preventing me from reaching 6-7 h SOT or is it just that I'm "unlucky" with the battery lottery.
Click to expand...
Click to collapse
I think this is your problem, not the battery. One of the biggest battery killers on any device is a weak signal as the phone will push more power to the radio to try and find a better one (not exactly what happens, but there or thereabouts). Rotting won't change that.
Have you tried switching to 3G only, does that make a difference? Does it differ when you spend time in an area with a better signal?
El Presidente81 said:
I think this is your problem, not the battery. One of the biggest battery killers on any device is a weak signal as the phone will push more power to the radio to try and find a better one (not exactly what happens, but there or thereabouts). Rotting won't change that.
Have you tried switching to 3G only, does that make a difference? Does it differ when you spend time in an area with a better signal?
Click to expand...
Click to collapse
The problem with my service signal is just temporary, I've been working for the summer but I'm moving back to the university tonight, there I have full 4g and 3g signal so hopefully this will change, however I have settled down a bit with the phone and I'm pretty happy with the battery now, 4h sot is not bad
yea rooting aint the solution
try gsam, wakelock detector, etc to detect the rogue app
imho you don't need root to improve your battery life, i'm achieving 5hr SOT easily with brightness 50%, AOD on and resolution WQHD+, all you need is to disable some of the preinstalled packages, do a bit of research to find out which ones can be disabled without a risk, then you will be good to go pm me if you need an assistance
I think your battery preformance is most likely to some apps or how you use it, I can say from expariance and experemanting with my S8+ that SOT and battery over all can shift.
I haven't rooted since im using samsung pay and haven't had a real need for root yet. but have tried a couple of diff apps and tests to max my battery but found that non off it really saves battery, quite the opposite.
I have tried substrantium to go all black in the phone (cus we have Amoled) but my battery life got worse
tried nova launcer to get some preformance boost and also black down the theme, but nova still suffers from battey drain issues (had same problem with my HTC10)
have disabled alot of services like bixby etc with BK Plugin. but made no big diff.
So after having the phone since launch and mixing and matching stuff to see if I could squeese a little more life out of an already good phone, I got to conclution that Samsung has done a good job in optimizing the S8+.
The stock launcher is fast and efficent, the built in "cleaning" program works well in shuting down unused apps etc. and running the phone with no extras and not tweking anything special or trying to get the phone as black as possible, I can go about 2 full days with normal use.
If you have the Snapdragon, battery life will decrease, by 20%.
I switched from a Verizon S8 to an unlocked S8+ and imo not having any of the added bloatware makes a difference. On my S8 I could make it through a whole day but my battery would be down under 10%. I know the S8 plus has a bigger battery but I go to bed with 30-40% of battery life.
I run my phone starting at 4:45am with a gym work out and I'm in bed by 11pm. My usage is mostly lte except for when I'm home. My SOT is always 5 hours or more.
Sent from my SM-G955U1 using XDA-Developers Legacy app