Galaxy S8 / S8 + Battery Life Thread

[waveuk]

Not sure about 1&3. I have AOD on, wifi on during sleep ALWAYS but my phone easily goes into light and then deep doze without any hassle. I drain not more than 4-5% over 8 hours in the night. I find the AOD in the S8 series quite efficient and doesn't wake up the device over prolonged idle period. Guess I had mentioned this in my earlier post as well. View attachment 259951View attachment 259952Check the stats of doze and deep doze in the screen shot.

What app do you use to show those stats?

 

[gops2116]

What app do you use to show those stats?

I use Gsam battery monitor Pro for the above stats. Tells u in detail how your phone is behaving w.r.to phone signal, temperature, idle performance (doze and deep doze), cpu etc and Accubattery is also another app I use to get a good idea of charging, discharging pattern and overall battery health.

 

[gops2116]

5% drain overnight is not bad and probably further changes may not be worth the hassle in your case. You still would have significant improvement changing WiFi and AOD, but in your case 50% progress would mean 2-3% overnight drain instead of 5%. In my case (Exynos S8+) AOD takes a lot of battery so I optimised it from 15% drain to 3% (not only AOD but everything I mentioned previously)

Even I have the Exynos model and am impressed with the standby performance esp on wifi. In an 8 hour period, the phone had gone to deep doze within 1 hour. That's impressive compared to my earlier S7 and one plus 3T.

 

[jmigna]

Even I have the Exynos model and am impressed with the standby performance esp on wifi. In an 8 hour period, the phone had gone to deep doze within 1 hour. That's impressive compared to my earlier S7 and one plus 3T.

It is very difficult to compare as it depends on the apps and what they do in the background. I'm still surprised that your phone takes only 5% overnight (8 hours you mentioned) with AOD on. When I have AOD this prevents deep sleep (based on GSAM stats)

 

[jmigna]

I use Gsam battery monitor Pro for the above stats. Tells u in detail how your phone is behaving w.r.to phone signal, temperature, idle performance (doze and deep doze), cpu etc and Accubattery is also another app I use to get a good idea of charging, discharging pattern and overall battery health.

BTW what's your SOT having such low idle drain?

 

[Qc_Anubis]

I thought i had good battery life before but since I've reseted the phone and started from scratch (some people said it helps to start fresh) and boy oh boy do i get results lol s8 plus drains barely 1% at night (i do disable wifi, aod,sync and use power saving medium at night). Now over 2 days without charge at 17% with about 3 hours sot.

 

[gops2116]

BTW what's your SOT having such low idle drain?

SOT is tricky and I prefer to measure the usage instead. I do use the phone a lot to make calls. S8 gave me 3.5- 4hrs SOT with 90mins of calls and a total usage of 7-8hrs thru a 16hr day. My S8+ has been clocking 1-1.5hrs more with 90-120min phone calls and lasts upto 24hrs.

 

[steven Hadjez]

I keep doing my best to add new tricks to save battery, and yet my phones battery keeps getting worse and worse ! Today I used 53% and got only 1h17min of SOT on my s8 plus

The weird thing is that today the android system consumed more than the screen.

 

[allrightallright]

I'm super impressed by the battery life on my S8+. Coming from an LG G4 I'm getting about 2x the usage per charge. So I'm not really bummed out by losing the replaceable battery. Just got 8 hrs SOT and that was with about 5 hrs listening to music via bluetooth or wired headphones.

 

[steven Hadjez]

I'm super impressed by the battery life on my S8+. Coming from an LG G4 I'm getting about 2x the usage per charge. So I'm not really bummed out by losing the replaceable battery. Just got 8 hrs SOT and that was with about 5 hrs listening to music via bluetooth or wired headphones.

Name of the theme ?

 

[james702283]

Great Screen time with nothing turned off.

 

[allrightallright]

Name of the theme ?

It's called Yozora

 

[steven Hadjez]

I keep doing my best to add new tricks to save battery, and yet my phones battery keeps getting worse and worse ! Today I used 53% and got only 1h17min of SOT on my s8 plus

The weird thing is that today the android system consumed more than the screen.
//uploads.tapatalk-cdn.com/20170514/25ea2a9ffd2a21af70029ededf367aa5.jpg//uploads.tapatalk-cdn.com/20170514/b3dddba3ab0829eda2996986f82218c0.jpg//uploads.tapatalk-cdn.com/20170514/1bf6da8f043d094a84dc2feaa6afca1b.jpg

After those terrible results I've had, I decided to go and buy a brand new s8+.
First disappointment came straight away: Half way through setting up the phone I had to put it to charge while some of you report having 5 hours SoT with just 5o% of battery out of the box on the first day setting it up.

Now that it's all set I just unplugged it off the charger at 100% and we shall see if this one gives me the battery than you guys claim. Will report at the end of the day.

 

[Qc_Anubis]

After those terrible results I've had, I decided to go and buy a brand new s8+.
First disappointment came straight away: Half way through setting up the phone I had to put it to charge while some of you report having 5 hours SoT with just 5o% of battery out of the box on the first day setting it up.

Now that it's all set I just unplugged it off the charger at 100% and we shall see if this one gives me the battery than you guys claim. Will report at the end of the day.

Don't take it wrong, but most people probably disabled apps I'd suggest to do it while setting up the phone the less crappy apps you have the more battery you'll probably have.

 

[dryja123]

I hit the lottery with my phone battery.

 

[Cozmohoot]

After those terrible results I've had, I decided to go and buy a brand new s8+.
First disappointment came straight away: Half way through setting up the phone I had to put it to charge while some of you report having 5 hours SoT with just 5o% of battery out of the box on the first day setting it up.

Now that it's all set I just unplugged it off the charger at 100% and we shall see if this one gives me the battery than you guys claim. Will report at the end of the day.

I think the roaming affects battery life...

 

[ClintRo]

I think the roaming affects battery life...

I agree with this.

 

[ClintRo]

I think the roaming affects battery life...

I agree with this.

 

[steven Hadjez]

I agree with this.

Okay maybe you guys are right. Because I just bought a brand new s8+, turned off most battery draining feature, and today I still didn't make it past 4 hours of SoT!!

So we can discard the deffectuous phone theory. And we can add that to the list of so many other things I tried and didn't work so far.

So tomorrow I will try to use the phone all day with my wife's SIM card which is local. Let's see if roaming was the problem.

Will report soon !

 

[erasat]

I think the roaming affects battery life...

I mentioned this on my first post about the issue, I also mentioned about a similar issue another user was having last year while using the Galaxy S7. Problem is that some people on this thread have mentioned that it shouldn't affect battery while others like me think it does. I may understand that some phones have different radios and behaves different but it's as much a fact as it can be than being on Roaming have a huge impact on battery life.

BUT, take a look at a couple of articles about the issue:

How to stop roaming battery drain on your mobile devices - TechRepublic

https://www.quora.com/Does-the-battery-of-a-mobile-drain-faster-while-in-the-roaming-network

https://androidforums.com/threads/roaming-and-battery-life.113640/