Does the battery saver setting make a difference for you? - Samsung Galaxy S8 Questions and Answers

It makes a major difference for me. Most of the time keep it on medium battery saver. Not sure why I have a battery case that can charge the more than device twice. I'm a power user and my house has ****ty signal so it does a number on my battery.

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new battery issue... display??

after rooting the phone, when i check on my battery usage, it suprised me that the main battery usage is not standby anymore. instead, it says 80% on display, but i didn't use the phone that much today and the battery drops pretty fast. alot worse than before root. anyone know what happens?
I noticed that in the Battery Usage the display is always first with a really great percentage, BUT if you use Spare Parts you will see the normal usage.
So, I think it's just a bug.
My battery is better than before actually!
My battery life is much worse actually, I think i have the 020 root, not sure, as in my phone settings it says FW 020. I thought id downloaded the 023 root though...
Bloke#
My battery seems better but I just noticed something, the little battery graph on top of the phone, there are 5 stages if I remember correctly (5/5 being full and 0/5 being mostly empty). So math wise, under 80% it should display the battery at 3/5 full, mine is at 70% and displays 4/5 full, is sony trying to screw us or did I do something wrong?

Horrible battery life even with extended battery...

The only thing I ha te about this phone is the embarrasing battery life. So I bought an extended battery online with 3000 mAh (double the normal battery) but Im not really noticing a difference, even with a static wallpaper and few widgets and gps turned off, the battery life is still horrible. I get about 8-10 hours worth. Is the a type of power cycle I can do to increase it at all?
hyperbyteX said:
The only thing I ha te about this phone is the embarrasing battery life.
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Lie! Man this phone rocks on battery life. With heavy usage or with medium. With heavy usage it holds on for more then a day. medium gives you atleast 2.
hyperbyteX said:
So I bought an extended battery online with 3000 mAh (double the normal battery) but Im not really noticing a difference, even with a static wallpaper and few widgets and gps turned off, the battery life is still horrible. I get about 8-10 hours worth. Is the a type of power cycle I can do to increase it at all?
Click to expand...
Click to collapse
What battery you bought? Are you sure it has the declared 3000mAh ?
And what rom and kernel you are running?
I wouldn't be surprised if your '3000 mah' has minimally more capacity than the stock 1500 mah.
Given that many people post good battery with a wide variety of ROMs/kernels, unless your specific ROM/kernel has a problem I think many of these cases come down to one of two things:
1) usage, the phone will only get 5-7 hours of 'screen-on' usage, period. I was burning through this every day when I first got my shiny new toy, now I use it for about 1-2 hours a day and the battery lasts for 2 days on average. Some 'background' apps can be killer too, for example streaming apps that hit the data and hogs like Tunein radio (which is awesome but actually heats the phone up). In these cases you need to look at your specific usage and adjust usage or expectations.
2) Background crap. Who knows what it is, Facebook, Tango, etc. Last resort is factory reset to get rid of it (although many probably just install the same stuff they had sucking juice before...).
A third reason could be bad reception, especially with always-on data. My phone can idle for many days at my apartment where cell signal is strong and wifi is on. In an area with weak reception and the phone is trying to maintain data connection as well the radio will be sucking up tons of juice. There is no easy solution for this, I don't have much experience with it, perhaps mucking around with modems will help. Juice Defender (data connection manager) may also help it helped my battery life even with good reception but ultimately I don't even need it to go 2 days so I stopped fiddling with it (it has downsides like things are delayed up to 15 min between data connections and also a pause when you unlock phone for data to establish).

Battery life

First charge brightness set at 50%
What is everyone else getting
bbh4r4l said:
First charge brightness set at 50%
What is everyone else getting
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That looks pretty damn good.
I was just about to post a thread. Something is draining my battery life and causing Android System to be the highest battery usage. Check out below.
DrexelDragon said:
That looks pretty damn good.
I was just about to post a thread. Something is draining my battery life and causing Android System to be the highest battery usage. Check out below.
Click to expand...
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Can you repost your pictures? They don't seem to be working.

			
				
m3lover1 said:
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What is your brightness set at
bbh4r4l said:
What is your brightness set at
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Auto brightness.
Not to jack your thread.
But I used my iphone at work to watch videos, ect while there is downtime. I usually watch while it's also on the charger
For the Note series, does anyone know if that "kills" my battery for long term?
I know you can replace battery, but just wondering for future use.
Thanks.
Issue with battery drain due to android system is real
All three people I know that just got the Note 4 were experiencing the same issue I had with excess battery drain with the always generic "android system" taking more battery than anything else including the screen.
I downloaded an app called "System Tuner" and looked the CPU% for Android system and it was a constant 3-4% when the phone was otherwise idle.
I found a post at http://support.t-mobile.com/thread/80459 where they were experiencing the same issue (lose around 12% battery an hour with android system taking a huge chunk of battery). The person from that post was able to address the issue by turning location off, rebooting, turning location on, and rebooting again. After I did this I saw Android system idle at ~0.6% - 1.1% instead. So far I'm getting much better battery life but I'll need to give it some time to know for sure.
Hope this helps!
mine took about 2 full days for everything to finish syncing, downloading, indexing, etc. I had books, news articles, pinned music from google play, etc.
Once that happened, everything is now "normalized" and I'm getting better battery life than I was with the note 3.
Juk3s said:
Not to jack your thread.
But I used my iphone at work to watch videos, ect while there is downtime. I usually watch while it's also on the charger
For the Note series, does anyone know if that "kills" my battery for long term?
I know you can replace battery, but just wondering for future use.
Thanks.
Click to expand...
Click to collapse
Short answer: Maybe, it depends on how you are doing it. Using it while it is charging is not necessarily bad but watching videos and keeping it plugged in while the cell voltage is pegged at 100% will likely deteriorate your battery faster.
Long answer + tips:
Lithium ion batteries are great - they are light, can be made very thin and have excellent energy density but they are also very finiky.
Things to avoid doing with a lithium ion battery
-Charging to 100%, leaving it plugged in overnight is a poor practice(high cell voltages reduce the service life*, stopping the charge at 90%[4.10v] can double the service life, stopping the charge at 80%[4.00v] can quadruple the service life.*)
- Discharging the battery to below ~20% (Li-Ion batteries are somewhat sensitive to deep discharges)
-Charging/exposing Li-Ion to elevated temps or below freezing.
*service life is defined by when a battery can only retain 70% of its rated capacity. Most consumer batteries used in mobile devices have a service life of 500 charge discharge cycles.
It is not uncommon for batteries to lose 30% capacity in 1.5 years or less. Changing your charging and handling habits can double or quadruple a batteries life span.
DrexelDragon said:
That looks pretty damn good.
I was just about to post a thread. Something is draining my battery life and causing Android System to be the highest battery usage. Check out below.
Click to expand...
Click to collapse
LOL your picture took up have my damn screen on my 1080p laptop with 15.7 in screen. It was crystal clear too.
On my 2nd charge, auto brightness. Pretty freakin' amazing battery life....
15.5 hours off the charger with 8+ screen on time!
I got awful battery life on the first charge cycle. It drained 50% overnight. 2nd charge has lasted amazingly long and I still have 64% after 12hrs of average use.
First charge. Battery life has been phenomenal. Brightness on auto.

			
				
Did u use any power saving features to achieve that time?
Did u use any power saving features to achieve that time?
Definitely improve battery with recent update and I'm a power user
After the latest update
I dont know why but my phone goes from 100-90 in less than a hr with minimal use while the screen is set at auto, also in the leaving it unplugged in the night the battery also drains like 5 points.
I've been at full brightness and using the hell out of it non stop so far, and I'm at 35% with screen on time at 3hrs 40 min.
No update
Sent from my SM-N910T using XDA Free mobile app

Battery consumption.

Hi everyone,
I bought my S8 plus on October 26th 2017. After 4 days using, my devide battery drain quickly. I turn off Location, turn on Sync and using not quite often from 7:00 am to 12:am and the battery lost 36%. Does my phone have a battery problem ? I am using 2 sim also.
Thank you so much.
It's not a faulty battery... I have my s8 a month or so, and I'm not impressed with the battery life. Idle state takes too much power, also cell standby. For your dual sim variant, i suppose that cell standby will take even more juice. It's just that, the s8 has really average battery life, at least on official roms, too much wakelocks.
Why not track which apps use data in the background and turn them off.
Mine is stock, but have disabled some Samsung junk, having data on eats battery (phone continually pinging for LTE/3G) so if in wifi area turn data off, use battery saving location setting. I get 60 odd hours between charges, with around 6 hours SoT. I'm quite impressed but one needs to 'tweak' the phone to get best battery life, some good suggestions here. https://www.xda-developers.com/the-...r-community-radically-improved-my-experience/

ZeroLemon 10,000 More Battery Drain?

This is the first battery case I purchased for any phone I've had. It seems as if my battery life has gone down. I am not charging the phone constantly off of the case. I only charge it when I get below 20% charge. I have not changed any of my settings within my phone and it seems to be eating more battery in my average day. Has anyone else had these issues? Also, what does Google consider "last full charge" in the settings? I only charge up to 90% with the ZL case bc I wanted to get a good average with the ZL case before a full recharge of both device and case. Any tips on maximizing my drive time with this case? Thanks in advance!
The case may be causing some attenuation of signal, leading to more power needed for the radio. I'd expect to see less effect while on WiFi than mobile, if that is the case. You could use a signal strength app to see if you can tell a difference in and out of the case.

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