yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S9+ Questions & Answers] Venom0642:
Very happy with my AT&T S9 Plus battery life.
[Samsung Galaxy S9+ Questions & Answers] Virgo_Guy:
AT & T has the SD version of s9 plus right? No doubt it is having wonderful endurance.
[Samsung Galaxy S9+ Questions & Answers] ssj100:
Sure, just trying to understand why you're getting very different results to many others. For example, someone has already said the S9+ and Pixel 2 XL have similar battery life with their similar usage. And we've seen fantastic battery life reports from many posters with Exynos here (and in other forums), including from my own experience.

That's why I was trying to narrow it down to the type of applications etc you may be using, as perhaps these specific applications drain battery more on S9+ (Exynos)? I don't know how else to explain the differences otherwise, aside from batch variation for whatever reason.
[Samsung Galaxy S9+ Questions & Answers] nad4321:
Has anyone had terrible battery life which improved after a full factory reset + reinstalling apps manually?
[Samsung Galaxy S9+ Questions & Answers] ssj100:
I always do that from the start, so I can't compare sorry. Battery life on mine has been excellent.
[Samsung Galaxy S9+ Questions & Answers] Virgo_Guy:
Now u can understand why I'm so believing in the anadtech's findings as that's the only thorough technical explanation that could convince me to the core. This year's Exynos 9810's small cores are a55, unlike the usual a53. Sammy increased the chip size, even bigger than Apple's A11 bionic, requiring more power, but at the same time de-tuned to match with, as close as possible to SD845 and ended up delivering kinda "a mess". I believe this will be fixed in the Note 9 as its rumored to have a massive 4000 mAh battery.

https://www.slashgear.com/samsung-galaxy-note-9-release-date-specs-camera-pricing-cost-02529417/

...

Users report of good battery life [MENTION=4781463]exynos[/MENTION] too, but there maybe "tweaks" & "workarounds" and other various factors like single sim, AOD off, auto brightness off etc. influencing the very good looking screenshots and poor battery life reports are no less.

---------- Post added at 08:56 AM ---------- Previous post was at 08:52 AM ----------

Hehe, that's what I do with every smartphone, but didn't help after "setting up" with this 9+ post 2,3 days.
[Samsung Galaxy S9+ Questions & Answers] ssj100:
I think you did mention having dual sim sucked the battery more than single sim? I'm on single sim with a 128Gb SD Card (with 256Gb internal drive - as I said, I sort of maxed out my device since it was free hehe). Perhaps the dual sim is the main issue with the S9+ (exynos)?
[Samsung Galaxy S9+ Questions & Answers] Virgo_Guy:
That's just one of the reasons to have kinda better battery life though it doesn't make huge of a difference I would say.
[Samsung Galaxy S9+ Questions & Answers] ssj100:
Yes, I suspect it's specific things like this though. Perhaps there're only 2 or 3 things, but they add up. Otherwise it's hard to explain why others have a much different experience to you. As I said, when someone says they have similar SOT with S9+ and Pixel 2 XL (which a lot of the real-world "stacked" tests show), while you say you only get half the SOT with S9+ compared to Pixel 2 XL, something isn't right with someone or something.
[Samsung Galaxy S9+ Questions & Answers] fastwing76:
me and a friend are set to go out after a week and buy S9+ , exynos version. there seem to be alot of conflicting results regarding this whole battery debacle some report everything is fine and others are reporting horrible battery life. should I go ahead and buy it or switch my option to huwaei mate 10 pro or p20 pro?
[Samsung Galaxy S9+ Questions & Answers] Virgo_Guy:
Mate 10 pro and p20 pro both have better battery life. So it's upto you. Don't keep hoping that Samsung will fix it via software updates.
[Samsung Galaxy S9+ Questions & Answers] fastwing76:
we already ordered 6 cases from amazon for the S9 plus. LAMO no one here complains about the battery life. but the phone is still very new, is issue is how would the battery hold up in the long run, I'm currently using asus zenfone max with 5k battery but it can no longer handle my usage.
[Samsung Galaxy S9+ Questions & Answers] :
s9+ 256gb exynos here (power saving off).

mainly emails, whatsapp and web surfing... :fingers-crossed:
[Samsung Galaxy S9+ Questions & Answers] fastwing76:
if you guys haven't watched this I highly recommend you give it a glance. https://youtu.be/1jMnpHtK1Zg it seems the exynos S9 plus held up pretty decently against the other phones. I'm honestly starting to think that people who are suffering from bad battery life is due to their settings and what they are running in the background. the vast majority of my research online seems to indicate that there is nothing wrong with the exynos variant. I think I'll just go out and buy it at the end of this week and post my battery life results at my earliest convenience.
[Samsung Galaxy S9+ Questions & Answers] force70:
What you said, peoples settings, apps, signal strength, useage these are what dictate battery life mostly.

Its not the device, if its the devcie I would also be getting terrible battery life an Ive never seen less than 5 hours SOT yet.

sent from my Exynos S9 plus, Pixel 2 XL or Note FE
[Samsung Galaxy S9+ Questions & Answers] srcnDMD:
UPDATE: Somehow it got better, with more or less than 10% drop every hour with continuous use of social media & streaming. I don't complain though, I think this is just fine based on how I use it. What bothers me is the drain I get every time I sleep and wake up the next morning with more than 10% drain, which was not resolved. I usually sleep for around 7-9 hours, and take note, I leave it at maximum power saving mode with everything cleared in the background and it still drains like crazy. What should I do?
[Samsung Galaxy S9+ Questions & Answers] ssj100:
Yes, I was reading back in the SOT forum and here are some other links showing S9+ Exynos doing very well:

https://www.youtube.com/watch?v=KL92Gb44Ciw

https://www.youtube.com/watch?v=QwxQNkmezpQ

I noticed that one user who keeps complaining about "bad" SOT actually mentioned he gets (good) 8-9 hours SOT over a shorter period of time (say 10 hours), but only gets about half that with a longer period of time (say 18 hours). That simply tells us that there's something wrong with his standby/idle drain (when the screen is off). It seems there are more people than not reporting on these forums rather excellent standby/idle drain - I certainly can report excellent standby/idle drain, even with AOD enabled. The "stacked" tests above show more evidence that the S9+ exynos is very good in real-life heavy use - if you think about it logically, those stacked tests are often getting 6-7+ hours SOT with this heavy use - therefore I can think of 2 likely reasons why people would be getting say half that SOT (~3-4 hours):

1. Something is draining their battery while in idle/standby, and draining it much more than it should?

2. They've been off battery for >1-2 days and don't use their phone that often (hence the relatively low SOT)

Scenario 2. would apply to all phones and can essentially be discounted. So those who are getting good SOT over a short period of time off battery (say <10 hours), but "bad" SOT over a longer period of time (>10-15 hours off battery) need to look into what's causing excessive battery drain when their screen is off.

I recall reading somewhere on these forums that one possible culprit of excessive battery drain while the phone should be in idle/standby is "Google Play Store" having access to "SMS Permissions" - this can be easily blocked via "App permissions".

---------- Post added at 07:42 PM ---------- Previous post was at 07:34 PM ----------

That's certainly what most people tend to report - that it gets better with time.

Losing about 1% per hour with AOD enabled overnight is normal, at least in my experience. My previous S7 lost the same amount per hour. With AOD disabled, it should be more like 0.3-0.5% per hour. This is with no power saving modes enabled.

It sounds like you're losing about 1.1-1.4% per hour overnight - is this with AOD enabled? If it is, then that sounds about right (a bit more than in my experience, but it's not far off and possibly within "error"), although you'd think it should be better with "maximum" power saving mode enabled. Actually, I guess with "maximum" power saving mode enabled, AOD must be disabled right? If so, then that doesn't sound right. I think someone here can advise you to install some battery stats monitoring app to identify why your standby/idle drain is relatively high.
[Samsung Galaxy S9+ Questions & Answers] srcnDMD:
Hi! My AOD is disabled since I know that it consumes the battery as well, other than that, I am having a decent battery life as compared to before. :) someone please help?
[Samsung Galaxy S9+ Questions & Answers] ashwinksa:
Guys is your android system battery consumption stopped ? For me it's still on the top or second in the list after screen.
[Samsung Galaxy S9+ Questions & Answers] fastwing76:
the SOT of my asus zenfone max is 13 hours according to accubattery pro. but realistically speaking the battery only lasts 24 hours, and I charge it once a day. however due to the GPS issue, it's sluggish performance after 2.5 years of using it. I don't really use it that often anymore so I'm pretty sure the SOT is more like 7 to 8 hours rather than 13 hours.

so for me if buying the s9 plus will give me 24 hours medium to heavy usage. charging it once a day, then I'll be very glad with it. especially with wireless charging, since u can just throw it on the pad and leave it to charge. that with a 2.5h charge time it's a blessing. mind you my asus zenfone max takes 5 hours to charge, it doesn't support fast charging and I have to charge it once every 24 hours.

now the question I want to ask you guys is, will a 3500mah battery last for 3 years, holding at least a day of charge? I'm going "buy the best and cry only once" route this time with my new upgrade so I'm planning to keep my next flagship phone for a while before buying something else. how long will the battery hold up in those 3 years time? I can always wait for energizer new 16k mah pwerphone but we all know how buggy and issue ridden things are when companies try to manufacture them on their 1st try. very interesting concept though :) with that said samsung does promise 95% battery capacity retention for 2 years so I don't know if I should take this with a grain of salt to take their word for it.

---------- Post added at 04:33 PM ---------- Previous post was at 04:25 PM ----------

this is correct, in my experience there are various app that prevent a phone from going into deep doze. having bluetooth on, connecting a fitness band, wearing it in your sleep. having bloatware, sync on etc. when the phone doesn't go into sleep all the other app just keep functioning and riding along with the app that keeps the phone from going to sleep hence drain happens. being super vigilance about whats running on your phone generally and whats running in the background specifically can make a world of difference between someone who can get SOT of 4 hours and another who gets an SOT of 8-9 hours.
[Samsung Galaxy S9+ Questions & Answers] ashwinksa:
Any improvement or tips for reducing android system battery drain ?
[Samsung Galaxy S9+ Questions & Answers] aj7400:
Nothing for now .

Waiting for an update with changed kernel
[Samsung Galaxy S9+ Questions & Answers] ticalo:
Samsung needs to bring a fix soon. I'm getting no more than 2-3h SoT and have to recharge the battery twice a day.

I've uninstalled all unnecessary apps i.e. Facebook, messenger, etc. Reduced brightness to 40%, black theme, disabled ALL Samsung features including iris, intelligent scan, disabled the second simcard and much more.

This is insane. Paying over $1200 for a phone that has worse battery than all my other phones I've had
[Samsung Galaxy S9+ Questions & Answers] chwads2k8:
tested yesterday on full battery at 9:20 am went out on a journey used phone all the way through with music playing tekken sf 4 and clash royale and alot of browsing came home at 7pm with 54% batt left, seems fine to i thought battery was great on these phones
[Samsung Galaxy S9+ Questions & Answers] -Vulture-:
My german exynos variant of the S9+ also behaves pretty good. I only have it for a few days now, but 6-7h SOT are possible. Loosing 20%-30% of battery per day with my daily usage. Android System is not behaving strange in any way.

Overnight im loosing 4% in 7-8h. AOD is disabled, some other tips implemented (background activity for Android System is disabled, mobile data connected while on wifi is disabled, some apps disabled, ...).
[Samsung Galaxy S9+ Questions & Answers] bassgenerator:
4 Charging cycle. ARD4 Exynos Europe. Boom Shaka-Laka
[Samsung Galaxy S9+ Questions & Answers] Drast:
да
[Samsung Galaxy S9+ Questions & Answers] btblue:
I've had my S9+ for six weeks now and I get around 6 hours SOT. I know it would be more if I didn't have certain apps. Before I added the likes of Snapchat Facebook etc I was getting almost 7 hours. I'd strongly advise to be careful in terms of what apps you've loaded.
[Samsung Galaxy S9+ Questions & Answers] Noexcusses:
I got.6 hours with 50% brightness.. we need an update for sure
[Samsung Galaxy S9+ Questions & Answers] bassgenerator:
Completion cycle... death
[Samsung Galaxy S9+ Questions & Answers] Davey Dual Sim:
I've had mine since launch, its dual sim, I use my phone extensively for work and leave WQHD on, adaptive display and screen on at least 75% brightness as I work outside a lot. Also I drive around remote countryside and the phone is constantly in and out of signal .I get 12/13 hours a day and 5 hours screen time, that's great for such a large powerful phone

Ps I have 3 email accounts syncing to a work server via a work profile, I don't turn anything off
[Samsung Galaxy S9+ Questions & Answers] Noexcusses:
That's.not possible.

Brightness?

Quality display?

Synchronized any e-mails?
[Samsung Galaxy S9+ Questions & Answers] bassgenerator:
Sync one gmail auto brightness. WQHD resolution. Disable Bloatware 122 bloatware via Package Disableer Pro. GPS Battery saving. I don't use Facebook or messenger. I like Telegram, Viber, Gmail. I play only card games. I don't use Chrome which has the consumption double as the Samsung browser. I use a dark theme Terpsichora. AOD: OFF
[Samsung Galaxy S9+ Questions & Answers] Noexcusses:
We are almost the same except disableer pro..

Not using Facebook app isn't a solutin.. p20 pro with Facebook app gave me 7 to 7.30.hours screen...
[Samsung Galaxy S9+ Questions & Answers] Davey Dual Sim:
This is what I get all the time

this includes charging night before, dual sim, two email accounts syncing, I keep the screen bright for work , the radio reception is weak so battery working hard all the time, wqhd on all the time, I have nothing turned offView attachment 4505099
[Samsung Galaxy S9+ Questions & Answers] srcnDMD:
UPDATE: I don't know how to add an image to make this reply credible, but here is my battery usage before I power it off and charge. At 1 month & 1 week, my phone's battery life has got so much better. I have no apps disabled, I have my sync & AOD turned off. Just everything installed with no complicated settings since I don't know how. (I'm a girl.) Regarding my battery drain while on standby, I learned to turn on airplane mode and with that, I only lose about 2% in about 8-10 hours while sleeping.

Time: 1:40 a.m.

Battery percentage: 7%

15h 12m 43s on battery

Screen - 9h 27m (40%)

Android system - 12%

Chrome - 2h 48m (6%)

Device idle - 15h 13m (6%)

Android OS - 6%

Instagram - 1h 29m (4%)

YouTube - 2h 19m (3%)

audioserver - 3%

Facebook - 1h 28m (3%)

Messenger - 59m (2%)

Twitter- 50m (2%)

I have the Exynos version. At its first 2 weeks, I'm about to go crazy because of its fast battery drain that caused me to check on my battery percentage almost every time but now, I think my phone had already adjusted based on how I use it and I'm super happy with its power. I can always edit this to add the image if anyone can teach me how hehe✌
[Samsung Galaxy S9+ Questions & Answers] ssj100:
Sounds good, but I think you have AOD turned off?

---------- Post added at 07:16 PM ---------- Previous post was at 07:16 PM ----------

Do you have AOD turned off?

Regardless, these are yet more examples of people having good SOT.

EDIT: regarding posting images, you have to "Go Advanced" and then click "Attachments" (it's the paperclip symbol), and then upload your image file.
[Samsung Galaxy S9+ Questions & Answers] Davey Dual Sim:
Turned Aod yesterday sorry as was in a meeting, but it doesn't affect the battery much
[Samsung Galaxy S9+ Questions & Answers] ssj100:
You also charged the phone a little, so your reported SOT should be a bit less. Regarding AOD, it really depends on how much time the AOD is actually "in use" - if you have the phone face-down or in a pocket etc, then the AOD will not actually be "in use" despite being enabled (as the AOD automatically switches off in situations like these). This certainly means the AOD doesn't affect the battery life much at all. But you can see what happens when the AOD is "in use" for over 24 hours with one of my examples here:

https://xdaforums.com/showpost.php?p=76558531&postcount=511
[Samsung Galaxy S9+ Questions & Answers] Davey Dual Sim:
No, I put the cable in as soon as the screen dimmed , there was no charge in it
[Samsung Galaxy S9+ Questions & Answers] ssj100:
If you look at the graph, how would you explain that it went up then? Around just past the halfway mark.
[Samsung Galaxy S9+ Questions & Answers] Davey Dual Sim:
Dunno, I stuck the cable in so I could take a screen shot

---------- Post added at 07:36 PM ---------- Previous post was at 07:35 PM ----------

Maybe I took an earlier screen shot dunno
[Samsung Galaxy S9+ Questions & Answers] Brave.Maxton:
Yes is it possible.

Autobrightness

FHD+

Synchronized all On (2 mails account)

And NO PowerSaving
[Samsung Galaxy S9+ Questions & Answers] Noexcusses:
What is your system update version
[Samsung Galaxy S9+ Questions & Answers] bassgenerator:
https://xdaforums.com/showpost.php?p=76568193&postcount=522
[Samsung Galaxy S9+ Questions & Answers] s0nixx:
I get decent battery life
[Samsung Galaxy S9+ Questions & Answers] ashwinksa:
Are u using exynos or snapdragon ?

---------- Post added at 03:53 AM ---------- Previous post was at 03:52 AM ----------

Are u using exynos or snapdragon ?
[Samsung Galaxy S9+ Questions & Answers] arnes_king:
Hello,

Just to write my experience. I also had really horrible battery life on my exynos S9+, with 2-3 hours of SOT with total 16 Hours battery time.

I have tried all the tips from the forums changing all settings, disabling many of the features but it got me nothing.

After that I just re-flashed the latest BTU firmware via ODIN, and did a clean install (factory reset). Now my battery is great! Right now I have 71%, 14 hours since I unplugged it, and 2 hours and 12 minutes of SOT!
[Samsung Galaxy S9+ Questions & Answers] ashwinksa:
Did you restore the backup from the old version ?? Or manually installed the Apps ?
[Samsung Galaxy S9+ Questions & Answers] arnes_king:
I did all manually, because I did not wanted to risk that something goes wrong because of some back ups. I did all manually, and the results are awesome!
[Samsung Galaxy S9+ Questions & Answers] SWEagle:
I'm one of the people which is having a phone with a very bad battery life time. Even after all the possible tweaks...

Seeing that the biggest problem with this CPU is the scheduler I have a simple question: did anyone with a "bad" Exynos tried one of the custom kernels available in this forum? If so, what is your outcome? Please add the characteristics OC/scheduler used?

Thank you in advanced.
[Samsung Galaxy S9+ Questions & Answers] s0nixx:
Yeah i have exynos variant
[Samsung Galaxy S9+ Questions & Answers] Virgo_Guy:
A vast majority of Exynos users are on the same boat.(Google it out). I'm waiting for the next OTA from Samsung to improve the batterylife with a modified kernel. If they don't, the first thing I would do is to flash a custom one.
[Samsung Galaxy S9+ Questions & Answers] aj7400:
It been over a month , i have been waiting for that update .

I dont think they have even acknowledged the problem at the moment.

Still Fingers crossed .....
[Samsung Galaxy S9+ Questions & Answers] Virgo_Guy:
Yeah bud. Very thin hope. But in rare occassions Samsung did try minimizing issues they didn't "recognize" in the past. So, just hoping with no hopes :rolleyes:
[Samsung Galaxy S9+ Questions & Answers] ssj100:
So all you guys, what do you think you are "sacrificing" in order to get this "decent" battery life? I'm just asking out of curiosity, as someone here feels quite strongly (or at least implying heavily) that you are all sacrificing something in order to achieve this!:
[Samsung Galaxy S9+ Questions & Answers] aj7400:
I even face occasional heating issues automatically and lagging issues.

And Even some of the apps like snapchat are still not optimized for the best flagship , s9 plus.
[Samsung Galaxy S9+ Questions & Answers] Davey Dual Sim:
I've not sacrificed anything apart from AOD off, I have everything else at max, dual aim, bright wqhd screen etc
[Samsung Galaxy S9+ Questions & Answers] ssj100:
I feel your pain regarding certain apps not being optimised - Skype is generally laggy for me too (much the same as on the S7).
[Samsung Galaxy S9+ Questions & Answers] Sabertooth:
Actually I won't deny those issues but since I have G-965F and G-9650 both I noticed occassional heat and somewhat sluggish performance only with the G-965F model.
[Samsung Galaxy S9+ Questions & Answers] aj7400:
Iphones are great in optimizing.

Becuase even app developers have to optimize for just 2 phones every year

---------- Post added at 10:05 AM ---------- Previous post was at 10:04 AM ----------

Yaa i think the coming update should be the most important update
[Samsung Galaxy S9+ Questions & Answers] jah2110:
No update for batery, the problem is in your phone and bloatware, mi s9 snapdragon give to me 6 hours SOT with 2 hours gaming.
[Samsung Galaxy S9+ Questions & Answers] aj7400:
Exynos is there own chip .

Expect some optimizations soon .

They will bring the performance at par with snapdragon
[Samsung Galaxy S9+ Questions & Answers] Virgo_Guy:
Well, they certainly can improve but I doubt it would be on par with the snapdragon even if they do. Note 9 may see the light.
[Samsung Galaxy S9+ Questions & Answers] aj7400:
Well i think there is no performance gaps between same year flagships like the s8 and note 8 .

They are at par in performance . Note 8 has same cpu power as s8 but 2 gigs of ram more .

Note 9 is most probably coming with 6 gigz of ram .

They are not going for 8 gigz for sure this year
[Samsung Galaxy S9+ Questions & Answers] Virgo_Guy:
Exynos SoCs on galaxy S6, S6 edge, s6 edge plus, s7, s7 edge, note 7, 7 FE, s8, s8 plus, note 8 all had the smaller cores - ARM Cortex A53. The micro architecture has changed with the s9's Exynos 9810 having Cortex A55. The SoC is by any means not a bad one , but to match with the snapdragon s9s, Samsung had to detune and then screwed up.

The full potential of the Exynos 9810 may show up in the note 9 I feel.
[Samsung Galaxy S9+ Questions & Answers] aj7400:
They will probably perfect the soc with s9 by a few fine tunes and implement it on note 9 , that is what i think they should do .

Rest lets just wait and see
[Samsung Galaxy S9+ Questions & Answers] Sabertooth:
First screenshot - Model no G-9650, GS9+ snapdragon.

Second screenshot -Model no G-965F, GS9+ exynos.

Third screenshot - descriptions of settings used.

#No standby battery drain in either of them.(4,5% overnight).
[Samsung Galaxy S9+ Questions & Answers] crossdeath:
Damn, 15 hrs of sot haha

Amazing.. who would've thought the exynos was so poorly optimized?