15 tips and tricks to improve battery life on the Samsung Galaxy S8 and S8+



There is an interesting trend going on with modern smartphones over the last several years – big advancements are made in nearly all hardware and software areas, but battery life always seems to improve at a slower pace.

This peculiar progression can be clearly observed in 2017 – so far, some of the biggest Android manufacturers came out with flagships that have thin bezels, large displays, and beefed-up performance specs.

Samsung has been at the forefront of these developments, as the company's Galaxy S8 and S8+ handsets feature a beautiful new design with minimal bezels, huge 5.8-/6.2-inch displays, and extremely powerful chipsets.

While the changes are undoubtedly welcome, isn't it a bit sad that these expensive contemporary flagships can't even compete with cheap smartphones in the battery department?


Compared to other flagships, the two phones actually do really well when it comes to battery life. 

The Galaxy S8 with its 3,000 mAh cell scored 8 hours and 22 minutes in our dedicated test, while the larger 3,500 mAh battery on the S8+ clocked in at exactly 8 hours.

All of this may sound great, but it's still noticeably less than the 2017 versions of the Samsung Galaxy A3, A5 and A7, which all achieved scores of above 11 hours.


Odds are that the Galaxy S8/S8+ will get you through a busy day with some juice to spare, but what can be done if you'd like to get even more time between charges?

Below, we've compiled a number of tricks and tips that will improve the battery life on Samsung's latest and greatest. Some of them are obvious, while some are a bit more sneaky.

Nobody expects you to stick with all of them, but you can test them out and decide what works for you. A good rule of thumb here is: If one of the techniques takes away features that you consider as essential, don't bother using it.

Related phones

Galaxy S8
  • Display 5.8" 1440 x 2960 pixels
  • Camera 12 MP / 8 MP front
  • Processor Qualcomm Snapdragon 835, Octa-core, 2350 MHz
  • Storage 64 GB + microSDXC
  • Battery 3000 mAh(30h talk time)
Galaxy S8+
  • Display 6.2" 1440 x 2960 pixels
  • Camera 12 MP / 8 MP front
  • Processor Qualcomm Snapdragon 835, Octa-core, 2450 MHz
  • Storage 64 GB + microSDXC
  • Battery 3500 mAh(24h 3G talk time)

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43 Comments

1. notfair

Posts: 755; Member since: Jan 30, 2017

The battery is great no tweaks needed.

18. Mxyzptlk unregistered

You're in denial. The battery could be better.

20. RoryBreaker

Posts: 238; Member since: Oct 11, 2015

Much Much better, there really was no excuse to having 4000 & 4500 mAh batteries this time...especially at this price point!

35. TechieXP1969

Posts: 14967; Member since: Sep 25, 2013

The Note 7 is a good excuse. Samsung could not have their "flagship" model have the issue the Note 7 had. Safe is better than sorry. SO yeah they had a very good excuse. Oh and I'd say the price increase is perfect. For $100 you get a bigger display, faster chips, double the storage of the last model, and a free Gear VR and premium headphones valued at $100. Samsung acquires a Audio company and their very first phone, gets superior quality headphones. Apple buys Beats and still no better headphones in the box. You are getting the value for your money. If you don't see it then you're blind and dumb.

21. NoToFanboys

Posts: 3231; Member since: Oct 03, 2015

I never heard you say that on iPhone batteries who definitely could be better. Then again, blind fanboy double standards.

28. Mxyzptlk unregistered

Leave it up to this chump to deflect from the truth by bringing up the iphone.

30. NoToFanboys

Posts: 3231; Member since: Oct 03, 2015

Says someone who always deflects by bringing Samsung on Apple issue articles. Good job hypocrite

22. zeeBomb

Posts: 2318; Member since: Aug 14, 2014

16. Disable any bloat that uses processes that u don't even NEED running

32. TechieXP1969

Posts: 14967; Member since: Sep 25, 2013

Yesterday I took my phone off the charger around 725A. When I went home, it was at 55%. My Note 7 would be at roughly 65% with the same usage. I've set my resolution to 2960x1440. However, sometimes I had to lower it, because I had some games that crashed and a warning came up and said the resolution wasn't supported. But right now the AOD is on, which could have caused the extra drain, so I will be turning that off today once its charged up. But I haven't plugged it in yet. But I will have too by noon. It;s down to 30% right now. It appears I lose 10%~15% every 3 hours which isn't bad at all. That's still about what I was losing on my Note 7. My Note 5 would lose 20%~25% every 3 hours, but I also used it more.

2. trojan_horse

Posts: 5868; Member since: May 06, 2016

"All of this may sound great, but it's still noticeably less than the 2017 versions of the Samsung Galaxy A3, A5 and A7, which all achieved scores of above 11 hours." Can't compare the 2017 A-series with a Galaxy S8. The A-series do only have the Cortex-A53 CPUs... So they're more about efficiency than raw power.

5. Tyrion_Lannister unregistered

After some research, I found out that the 835 as well as the 8895 are pretty bad on voltage frequency curve. This is mostly due to the premature 10nm process and yield issues with initial batches. All in all, the variants have incredible variance. Some will do really well with battery life (GSMArena 's unit) while some will do really bad (PA or Ars technica's). It's all luck of the draw at this point. The exynos s7 did 11 hours on PA test. Exynos s8 just can't. My personal advice : skip this generation or buy something cheap with big battery and wait for next gen processors ( 10 nm LPP)

9. trojan_horse

Posts: 5868; Member since: May 06, 2016

"My personal advice : skip this generation or buy something cheap with big battery and wait for next gen processors ( 10 nm LPP)" Funny thing is that the 10nm process isn't anywhere near being one of the major key selling points of the Galaxy S8... So, that advice or yours, though reasonable, will simply not matter that much.

10. Supraman21

Posts: 467; Member since: Jun 09, 2010

Do you think there is a chance that there will be an updated 835?

41. Tyrion_Lannister unregistered

Your guess is as good as mine at this point. Either way, the 835 and 8895 models sold later this year will have significantly better bins than these phones. Note 8 should be much better since the process will advance a bit by then.

14. Ordinary

Posts: 2454; Member since: Apr 23, 2015

I am gonna wait till S10 with 7nm hopefully by then.

23. zeeBomb

Posts: 2318; Member since: Aug 14, 2014

A lot of people that I know are saying just get the S7 edge and call it a day...yeah it seems that LPP is always better performance efficiency wise. It sucks Anandtech don't do the deep dives anymore

42. Tyrion_Lannister unregistered

They did a deep dive on kirin 960 just a month ago. They are just understaffed.

31. SYSTEM_LORD

Posts: 1168; Member since: Oct 05, 2015

I figured as much. I had a strong feeling that the process wasn't mature and would not fare any better than the 14nmLPP. My 3T's Kryo cores don't look nearly as bad anymore, especially seeing as how gsmarena have the "good unit" and theirs is only marginally more efficient than the early 820 (which is less efficient than the later 821). Hey, I'm trying to decide something. After rooting, while still using stock ROM and kernel, I'm going to drop the max frequencies on my kryo cores. I either want to drop the big cores to about 2.05ghz (not sure, but native scaler practically doesn't use this freq step at all) and drop the LITTLE cores to 1.28ghz, or drop one of the big cores to 2.15ghz and turn the other off completely and drop the LITTLE cores to 1.44ghz. Touch boost isn't likely going to be disabled​ in both cases. Which do you feel may save battery even better? Would it prove detrimental to day to day performance? BTW, I do not play intensive games or do video editing.

33. SYSTEM_LORD

Posts: 1168; Member since: Oct 05, 2015

I meant that touch boost is going to be disabled

39. Tyrion_Lannister unregistered

835 and 8895 still whip the 821 in efficiency though. It's just that they are not better than 8890. I tried a few different kernels. ElementalX seemed the best for the OP3. But it still doesn't improve the standby time though, and the low end frequencies are still stuck at 300 MHz which still drains too much power in background. No, it doesn't decrease smoothness much, but yes, the phone won't be as snappy. Video editing on phone is stupid anyway.

37. TechieXP1969

Posts: 14967; Member since: Sep 25, 2013

The difference i show the device is tested. That is what your research shows. We all know PA's battery tests are BS. Stop acting like you're new here!

40. Tyrion_Lannister unregistered

Not really. I am talking about the GSMArena's test and Ars Technica. No one cares about PA's result. The issue is voltage bins. S8 uses higher voltage than S7 for same frequencies. But the SD835 model is almost as good as E8895 this time and much better than Snapdragon 820 S7, if you are comparing in US.

36. TechieXP1969

Posts: 14967; Member since: Sep 25, 2013

They also have lower resolutions, don't have fast charging, and many other things the S has.

6. Plasticsh1t

Posts: 3109; Member since: Sep 01, 2014

Turn off this, turn off that. Better buy a phone with stock Android.

7. Tyrion_Lannister unregistered

And get even worse battery life. But hey, at least you won't have to turn things off, since they don't have any features.

12. Plasticsh1t

Posts: 3109; Member since: Sep 01, 2014

Not always the case. The Pixel and the one plus 3t has great battery life. And with more tinkering with xda awesome stuff and can have even greater battery life.

27. Tyrion_Lannister unregistered

The pixel and OP3/3T have garbage battery life. And I speak as an owner of Op3.

34. SYSTEM_LORD

Posts: 1168; Member since: Oct 05, 2015

Well, I get usually 7 hours sot without going much below 20%, and 9 hours with if the phone shuts off. It's not garbage, that's a bit of an exaggeration Tyrion.

8. sissy246

Posts: 7124; Member since: Mar 04, 2015

Wish someone would turn you off.

13. Plasticsh1t

Posts: 3109; Member since: Sep 01, 2014

Someone's butthole is ravaged. Go check with your doctor.

* Some comments have been hidden, because they don't meet the discussions rules.

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