Samsung Galaxy S9 with Exynos chip has surprisingly bad battery life, here is why

The Samsung Galaxy S9 battery life is... well, not great. But it seems that not all Galaxy S9 phones have the same battery life and an interesting investigation reveals what could be causing those battery issues...
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90 Comments

10. MarmiteTheDog

Posts: 191; Member since: Jul 31, 2017

And yet everyone who actually has the phone says the battery life is great. One of my staff just got rid of her iphone 10 and commented on the S9's much better battery life, but what do you expect from PhoneArena.com?

25. Cat97

Posts: 1897; Member since: Mar 02, 2017

Well, most Android phones have better battery life than the iPhones.

27. TechSceptic

Posts: 1156; Member since: Feb 05, 2018

I supose it's true. In the very limited scope of iphone vs Galaxy, the Galaxy phones look pretty good, but if you include other Android flagships, then the Galaxy phones aren't really better than the rest of them in terms of battery life.

46. yalokiy

Posts: 1012; Member since: Aug 01, 2016

Take a look at gsmarena battery tests, in video playback hours the galaxy phones are ahead of everybody else.

36. Xperia14

Posts: 1208; Member since: Sep 01, 2015

All reviews point out that the Exynos s9 has inferior battery life compared to the S8.

66. NinoH

Posts: 131; Member since: Feb 09, 2018

I don’t know what kind of stuff your friend is smoking but the galaxy s9 doesn’t have a better battery life then iphone X for a fact. I had a galaxy S8 and now i own an iphone X and the difference is incredible. My iphone X has 6-8 SoT regulary while S8 had 3-4 hours. I come home after a work day with 60-70% of battery life left. On the S8 i had maybe 30% at most.

13. dynamite

Posts: 12; Member since: Jan 16, 2018

I as S9+ owner Exynos series can say that, for me, battery is very average. I expected a longer on screen time, but its always a possibility to turn down screen brightness, turn on mid power saving mode and you can get through a day easily. But this "problem" on battery life is "covered" by a really good performance. So far, its a great phone and i like it.

19. dimas

Posts: 3374; Member since: Jul 22, 2014

Dead screen areas and now, this exynos version design issues. I'm not getting snapdragon in my country and I'm not really a plus phone fan. I think I'll pass s9 for now until these things are resolved by samsung.

28. NinoH

Posts: 131; Member since: Feb 09, 2018

Thats why i switched to iphone X. Say what you will about Apple but they are the king of performance,optimization and battery life.

32. yalokiy

Posts: 1012; Member since: Aug 01, 2016

Sorry, but there are loads of tests on youtube that prove you wrong.

77. Slowpoke

Posts: 23; Member since: Sep 30, 2015

And there are loads of them that show the iPhone lasts longer. Depends on the test. In normal day to day usage the iPhones (especially plus versions) last a few hours longer. I haven't used an iPhone myself but my g/f's iPhone 6s with replaced battery (lol) seems to do a lot better than my G7 with replaced battery.

29. djk4363

Posts: 32; Member since: Apr 23, 2013

I never thought I would say this but u regret buying my S9 Plus. The battery life is drastically poor. I changed from A Mate 10 Pro and that juicer pumped life like crazy. Samsung has lost its leading edge. Make way to Huawei and many others!

30. LikeMyself

Posts: 631; Member since: Sep 23, 2013

But a Snapdragon Galaxy S9's bootloader is not unlockable. So u can't even root it similar to previous Samsung Snapdragon flagships Better get other sd845 devices

39. yalokiy

Posts: 1012; Member since: Aug 01, 2016

You can unlock the bootloader on the S9 exynos version though.

33. Gadgetex

Posts: 198; Member since: Nov 10, 2013

Because they got Facebook built in it

40. yalokiy

Posts: 1012; Member since: Aug 01, 2016

Even if built in, it will not track you in any way unless you allow it to when you run the app for the first time.

49. Faster

Posts: 3; Member since: Feb 22, 2018

Just as expected, the article comes from the same guy who is doing SD propaganda for years now. Couple of months ago he was marketing the 845 as delivering 30-50% improvement in single core (GB4) compared to the 835. Numbers came out and the improvement was 20-25% across the board. Again the same individual is long talking trash regarding the exynos, search for his articles. It must have really hurt him to see 9810 scoring more than > 50% better than 845 in single score. Efficiency stand point, you can obviously see 845 having a better per watt performance. How much better ? Depends on usage, however I'd be surprised to get more than 12-15% difference. It's no surprise to anyone that once you push the performance envelope so much, you'll need either more juice or go down the manufacturing node to offset the increased consumption. Even if I were to trust the anandtech reviewer (which I don't), I would gladly trade 30% increase in consumption for >50% more power.

51. yalokiy

Posts: 1012; Member since: Aug 01, 2016

Could be that anandtech received a bad unit. GsmArena web browsing battery test result of S9 exynos version is over 10 hours. Which is about the same as S9 SD845. phonearena is just searching for proof for their irrelevant battery tests.

55. c.m.s

Posts: 236; Member since: Dec 10, 2017

The browsing test running length will vary depending on how its implemented of course. I trust Anandtechs tests alot more than GSMArena, which for a long time ran their tests at 50% brightness (in other words put phones with bright screens at a disadvantage) instead of setting screen brightness to a specific nits value as Anandtech (and others) had done for ages. Fortunately GSMArena fixed that misstake some year ago.

54. c.m.s

Posts: 236; Member since: Dec 10, 2017

You have to be kidding. The people at Anandtech are by far the most knowledgeable among the tech sites. They dig so much deeper than anyone else and can really back up what they claim, unlike many other sites.

53. PostmanLV

Posts: 44; Member since: Sep 11, 2012

All I know is my 9 plus snapdragon version has epic battery life

60. djk4363

Posts: 32; Member since: Apr 23, 2013

I never thought I would say this but i regret buying my S9 Plus. The battery life is drastically poor. I changed from A Mate 10 Pro and that juicer pumped life like crazy. Samsung has lost its leading edge. Make way to Huawei and many others!

61. KingSam

Posts: 1453; Member since: Mar 13, 2016

OnePlus 6 here I come.

72. Sammy_DEVIL737

Posts: 1529; Member since: Nov 28, 2016

With a NOTCH.!!

76. Dadler22

Posts: 241; Member since: Dec 11, 2008

You would think with all that alleged Chinese bloatware on the Huawei that it wouldn't outperform Samsungs ever resource hungry touchwiz. Sounds like either the chinese have the ultimate algorithm for data collection or someone is full of it

78. redmd

Posts: 1939; Member since: Oct 26, 2011

So "Good" is the new poor/bad?

80. perry1234

Posts: 646; Member since: Aug 14, 2012

My friend who works for Intel at present, and used to work in Samsung before, told me that Samsung skips on several seemingly insignificant quality checks, because they usually have a tight deadline (since they manufacture so many phones and in general, a lot of consumer electronics) as compared to someone like Apple who release relatively very few products in an year. P.S. Just for the trolls, I have owned a Samsung device before and I am not and Apple fanboy.

82. WGACA

Posts: 130; Member since: May 08, 2015

Still doesn't make sense... The S9+ Exynos has the same chipset, yet it improved in battery life? I'm no genius but doesn't that rule out the chipset? Probably more likely a specific S9 manufacturing issue. I've got the S9+ and with heavy usage I've got about 10% after a 15 hour day. I have yet to see the day that I couldn't last all day.

90. deleon629

Posts: 463; Member since: Oct 04, 2014

Being that this is a company whose R&D hub (South Korea) where most ppl just recently stopped using the Galaxy S3, I have a very difficult time trying to justify the reason why their chips need to be so powerful. All Samsing phones work great in South Korea because there's world-class connectivity in such a small place, and no ones ever heard of the "throttling" con. If anything they're taking steps to, as Apple has done in the past with their 2-3 gb/RAM phones for several years, is blame the carriers of service and connectivity isn't satsifactory.

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