yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S21 Ultra] enigmaamit:
Yeah, battery life seems to be a mixed bag here, may not meet some people's expectations, but it's not outright terrible either according to many others.

Are you sure it's a good idea to buy another S21U if the Exynos version didn't meet your expectations regarding battery life? The SD888 version seems to run a little hotter with higher standby drain. With the OneUI software being identical, don't you think battery life will be just as bad if not worse on the SD version?

From what I've read on the OnePlus 9 Pro forums, that phone has even worse battery life than this one, given the SD888's temperament and a 500mAh smaller battery - but most of them brush it aside coz of the insanely fast charging. Why not try some other phone instead of the S21U given a second chance? I'm just curious after reading your comment "but I'm on the verge to make my next move I certainly will regret." - unless of course money isn't an issue and you just want to play around with different devices.

Just curious, that's all.
[Samsung Galaxy S21 Ultra] Security555:
It is not lies in my intention to make people angry by changing the main topic of this thread, so I'm trying to be brief.

In my opinion, 2020-21 are the worst years for the smart phone market I ever experienced.

The sales are mostly driven by social media "influencer" and narrative, like never before.

So manufacturers did exactly what Steve Jobs propagated,

"give me control of the narrative, and I will sell you back, literally, your very own ****." OK, it's me saying about ****, but you've got the Idea.

All Chinese brands went up from $500 toward moon $1000-$1500 for Oppo or Xiaomi.

One plus was always an alternative to the flagship phones if one was not willing or able to spent 1k or more, but it never was a truly flagship.

Since last year all Chinese $500 phones considered to being android flagship phones.Should I laugh or cry, don't know.

I don't even want to start a discussion.

So, what do we got as a flagship,

Huawei - dead not because of Google apps, but because they abandoned the AOSP in favor for some new OS, no official statement whatever.

Samsung - old recognized brand with never ending software issues and only two worth mentioning models,

S2 and S7 edge.

iOS - doesn't provide the freedom of FOSS, neither alternative markets like F-Droid nor a side load option.

Using ridiculous justification, in prison your are more secure then on the streets.

What's left?
[Samsung Galaxy S21 Ultra] nixnixnixnix4:
I tend to start from scratch unless I'm restoring to the same phone.
[Samsung Galaxy S21 Ultra] Quazza:
When you say "start from scratch " is that still at least using your Google account to start from ? Or are you literally downloading every app, one by one ....?
[Samsung Galaxy S21 Ultra] nixnixnixnix4:
You could "mass download and install" all the apps under your Google Play account.

But, if you're spring cleaning and want to run a newer and tighter ship -- then, yes -- one by one.
[Samsung Galaxy S21 Ultra] nixnixnixnix4:
iPhones are arguably better in this regard.

BUT, most of my friends "start fresh" when they get a new iPhone.

Even after restoring from the same iOS version, they noticed that many of their settings and notifications and other data was way off.

I just use backups just in-case the worst-case scenario happens.

I use adb backups, sync the entire shared storage space, Google Cloud, Samsung Cloud, and any other per-app stuff -- all of them!
[Samsung Galaxy S21 Ultra] iamnotkurtcobain:
Only 3G?

Your battery life was better a few weeks ago...
[Samsung Galaxy S21 Ultra] nixnixnixnix4:
So it went from 100% to 90% in 2 hours of use?!
[Samsung Galaxy S21 Ultra] nixnixnixnix4:
Wait, I can't make heads or tails of what you've posted.

Standby shouldn't take more than 1% battery life per hour.

What app / process / service is draining this thing right now?
[Samsung Galaxy S21 Ultra] death365:
Ok last week Wednesday I got a snapdragon s21 ultra and I have not been able to get mote than 14 to 14.5 hours from the battery.

I'm on wifi 60 % and mobile data for the rest and have been using speed test apps to check coverage of WiFi/data around house.

I've also noticed that my tp link WiFi 6 router is very unstable using WiFi 6 and had to drop down to WiFi 5 to get stable WiFi.
[Samsung Galaxy S21 Ultra] Security555:
Would you, please, update us with the behavior of the Snapdragon version, because I'm about to order one from Hong Kong, and I'm not the only one here and on other forums, trying to asses whether it worth it or not.
[Samsung Galaxy S21 Ultra] Da1e7150:
Maybe it's your phone which has a fault my phone is in my pocket all day and I'm on my feet 12 hrs a day and it doesn't drain that much
[Samsung Galaxy S21 Ultra] Security555:
With the Snapdragon

The Snapdragon version seems to being affected by same issues as well.

All Samsung I owned S7E, S8, S9+ and S21 Ultra (Exynos) are so similar.

Out of the box it works fine, some time later it's starting to drain without obvious cause and finally you star to avoid the damn phone to prolongate the battery life.

And of course loosing time by denying the Samsung inherent problem by searching for a solution that doesn't exist.

Samsung's software/hardware suck, and on top of the obvious battery issue 25W charger is not even funny.

My 2,5 years old Mate 20 pro had 40W, all Chinese phones this year have even more than 50W.

I just canceled my order with the Snapdragon version.

Samsung needs a plutonium or antimatter reactor with such a sh***y software.
[Samsung Galaxy S21 Ultra] Da1e7150:
Maybe but phones can develop faults mine seems to have gotten worse with the may update but not to the level yours is
[Samsung Galaxy S21 Ultra] nixnixnixnix4:
Wow. I've never experienced anything like what you guys are going through.

Some single thing has got to be responsible for this issue.
[Samsung Galaxy S21 Ultra] Quazza:
32% Android system 😳 Holy ****. I thought mine was bad
[Samsung Galaxy S21 Ultra] mycars12:
I can be walking around all day and be left with 30% at the end of the day with 6-7hrs of screen on time. This is having gps on the whole time as well. My battery will only drain faster if i leave my phone in the sun.
[Samsung Galaxy S21 Ultra] death365:
After about a week the battery usage evened out, I'm getting around 16 to 17 hours from full and maybe 5 1/2 or 6 1/2 hours sot. I guess it was how as soon as I got the phone I updated to the May 2021 update and it needed to settle
[Samsung Galaxy S21 Ultra] TempusFudgeIt:
Is AoD turned on with Good Lock? Found that it tries to adjust settings or display when double-tapped. New to the Ultra so not sure if this would cause a problem when in the pocket (maybe acting like a double-tap every few minutes?)
[Samsung Galaxy S21 Ultra] enigmaamit:
Any difference with Accidental Touch Protection toggled On vs Off?
[Samsung Galaxy S21 Ultra] atcndw:
Spoiler content hidden.

I forgot to screenshot at the end hehe

But battery life is not good, whatsapp and Tidal battery hog...listening to music using Pamu Slide tws (aptx)

And as you can see, the last 5% go down quickly af
[Samsung Galaxy S21 Ultra] Goku1992:
What the **** xD best customer Support ever🤣
[Samsung Galaxy S21 Ultra] atcndw:
look how fast the battery drained from 5 to 0

and Tidal is draining too much battery I think

SOT also not good

90% of this battery charge I was at home, using wifi
[Samsung Galaxy S21 Ultra] Goku1992:
This isnt Samsungs fault.... Its tidals fault.
[Samsung Galaxy S21 Ultra] atcndw:
maybe

I'll test with spotify to see If get similar results, IDK if its an app or bluetooth issue
[Samsung Galaxy S21 Ultra] Goku1992:
Its the app.... Bluetooth would be on top of the chart if it was an issue.... Sadly many apps dont know the word optimization...
[Samsung Galaxy S21 Ultra] atcndw:
battery drain overnight using TIDAL with Pamu Slide (aptx)

shouldnt it be showing at least 0,01% of bluetooth? Idk, maybe its mixed with the app now
[Samsung Galaxy S21 Ultra] :
use karma firewall and keep it active also disable whatever u dont use within karma software

also use killapps it will kill all what is active (enable system app) when you open app

then youll get lots of battery life
[Samsung Galaxy S21 Ultra] babyboy3265:
Is it just me or did battery life degrade with the June exynos update?
[Samsung Galaxy S21 Ultra] Limeybastard:
That's very good considering you also have all those battery hogs. Well done.
[Samsung Galaxy S21 Ultra] atcndw:
now, i've tested with spotify to check battery drain using streaming + blueooth earbuds

And same average of 4 hours of SOT
[Samsung Galaxy S21 Ultra] hsienjuen:
Nope this isn't associated with the underlying problem. Just search s21 threads for 'cameraservice_worker partial wakelock' and you'll see what is actually draining the battery when the phone is in motion
[Samsung Galaxy S21 Ultra] nightoooo:
Would you please explain what do you mean by "app repair" which app do you mean and how did you do that?
[Samsung Galaxy S21 Ultra] patensas:
When your reboot to recovery you can wipe cache partition and the last option at the bottom will be repair apps
[Samsung Galaxy S21 Ultra] nightoooo:
Thanks, i got it. It is optimizing the apps as when i update the phone software...

Good to know if that helps. Thanks for the info.
[Samsung Galaxy S21 Ultra] jimv1983:
That's 6% of a 5,000mAh battery used in 9 hours. That's not very good.
[Samsung Galaxy S21 Ultra] felloffthetruck:
My battery life has been in the toilet since the May update.
[Samsung Galaxy S21 Ultra] nishanloshan:
without de-bloatting it lasts anywhere between 13 to 16 hrs
[Samsung Galaxy S21 Ultra] iamnotkurtcobain:
It's good again with the June Update
[Samsung Galaxy S21 Ultra] seancannery88:
yes same here after the update. performing better than before
[Samsung Galaxy S21 Ultra] babyboy3265:
Strangely enough, up to the May update my battery life was very satisfactory and since the June update I feel like battery performance dropped by like 15%... :/
[Samsung Galaxy S21 Ultra] Goku1992:
Thats absolutely ****.. Hope Samsung fixes it
[Samsung Galaxy S21 Ultra] Joloxx9:
I have noticed one thing:

5G - Terrible battery life

4G + battery saving(only disable 5g ticket from additional options) battery life ok

wifi - sweeeet battery.

And of course - camera wakelock sometimes I do 15k steps a day and from what I can see there is around 1 wakelock per step, last time when I did 19500 steps I had 21000 wakelocks only from camera service -.-
[Samsung Galaxy S21 Ultra] Kiwi_Dude:
Only had this phone for a week and seems ok so far. A full day at home on wifi and been on and off all day...

Edit... Exynos on the May update.
[Samsung Galaxy S21 Ultra] enigmaamit:
This looks amazing. Wish I could say the same for mine.

April update was the best so far as far as battery life was concerned for me. But May update has thrown the battery in disarray. I'd estimate around a 30% drop in overall screen on time and stand-by time.
[Samsung Galaxy S21 Ultra] ione2380:
Today I did 13.5k steps and CameraService_worker shows 372 wakelocks.
[Samsung Galaxy S21 Ultra] enigmaamit:
Can you please post a screenshot? How much battery did this wakelock consume?
[Samsung Galaxy S21 Ultra] ione2380:
3%. This was after 2 hours of walking.
[Samsung Galaxy S21 Ultra] enigmaamit:
That's quite good, given the reports from other users here who suffer from heavy battery drain attributed to said wakelock
[Samsung Galaxy S21 Ultra] Joloxx9:
Firmware version? Look at mine when AI did 20k
[Samsung Galaxy S21 Ultra] ione2380:
June AUE8 firmware. Exynos G998B/ds.
[Samsung Galaxy S21 Ultra] dr.ketan:
This is wrong (Incorrect way of measuring) statistic. First full charge device and then use device and then set default to "charge" and then show screenshot.

Currently Your device showing battery drainage in minus bcoz of custom setting.
[Samsung Galaxy S21 Ultra] ione2380:
Ok, thanks for letting me know. I will charge full and see.
[Samsung Galaxy S21 Ultra] Joloxx9:
Hmm I got may, still no June update in UK.
[Samsung Galaxy S21 Ultra] nightoooo:
I had Galaxy S21 Ultra with (Snapdragon 888) Hong Kong version in about 3 months, I did not like the battery performance of that phone at all, the SD888 seems to be very power hungry and I sold it. Later I bought (in Sweden) the S21 Ultra with Exynos 2100 and have that phone since 2 weeks, I can tell that I am surprised how the battery performance is compare to the Snapdragon model, also all around performance I can't see any differences.

Just to let you know, I had S21 Ultra with Exynos 2100 when it was launched back in January but I decided to return it back and get the Snapdragon model which I thought would be better in overall performance! In the first two months yes, Snapdragon was a bit better but now with more stable software updates I can tell that Exynos 2100 is performing better at least in battery life department!

Look at the attached screenshots from my battery usage..

* 50% WiFi & 4G.

* more than 60% usage of Bluetooth headset.

* Adaptive power saving on automatically when needed.
[Samsung Galaxy S21 Ultra] nightoooo:
Have you done any system clear cache and app repair as mentioned earlier?

Also a good thing to know, I did NOT add any app to force sleep in the power management section, I let everything to be done automatically, the only thing I did to enable Adaptive Power Saving option.
[Samsung Galaxy S21 Ultra] nightoooo:
I have 19% battery life left.. Time to charge the phone..

* Exynos 2100 chip (256GB variant)

* Last time charged: 1 day, 13 hours ago!

* The SoT is: 5,12 h

* The phone possibly can last: 1 day, 17 hours

* 50% WiFi & 4G.

* more than 60% usage of Bluetooth headset.

* Adaptive power saving on automatically when needed (kicked in at 40%).
[Samsung Galaxy S21 Ultra] zenaldo:
Adaptive power saving will turn your refresh rate to 60 most part of the day, so it's easy to increase the battery life doing this.
[Samsung Galaxy S21 Ultra] nightoooo:
It's needed when you ran out of juice, you can't see a big different when this is enabled so why not use it? Also, it's giving me much better battery life than i had in the Snapdragon variant.
[Samsung Galaxy S21 Ultra] atcndw:
8 hours on 4g/4g+ 15 hours and 30 min on wifi

wqhd 120hz

30 min using bluetooth (tidal)

only 4 hours of SOT =/

exynos AUE1

Any suggestion to improve it?

I did a factory reset after march or april update, I'm not sure which one

Recently cleared cache and no improvements
[Samsung Galaxy S21 Ultra] MMarkkk:
THL G998BXXU3AUF2 FHD+ 120Hz Exynos
[Samsung Galaxy S21 Ultra] TheJesus:
Barely clearing 5hrs sot
[Samsung Galaxy S21 Ultra] luk71:
Samsung Galaxy S21 Ultra

Used only on 4G

SM-G998B/DS

Exynos - 256GB / 12 GB RAM

Mobile data, Wi-Fi, Bluetooth, NFC always on

Dark mode

Screen 2040x1080

Motion adaptive

Eye confort adaptive

Screen mode natural

Adaptive battery

Enhanced processing off

AOD off

after one week...
[Samsung Galaxy S21 Ultra] babyboy3265:
Your overall usage seems good but people are more interested to see the SOT (screen on time). If you tap on the blue graph it shows you the total SOT.
[Samsung Galaxy S21 Ultra] atcndw:
Whatsapp drains too much battery when using mobile data

Thinking about factory reset one last time to check if the battery life gets better
[Samsung Galaxy S21 Ultra] ljcm:
Have been getting even worse battery life (and estimates) than this.

Debloated carrier (ZTA) and other Samsung nonsense today, wiped cache, optimized apps. Going to leave it on standby during the night, from 100%. I'll be asking for a replacement if it drains on standby or if my morning usage almost kills it (turning off Wi-Fi, using only mobile data, GPS on, paired with active watch 2, moving around, listening to music etc).

Seriously, why in the world a device that gets 8h of SoT with gaming and YouTube would struggle to keep up with browsing the internet and music??
[Samsung Galaxy S21 Ultra] atcndw:
Whats your average SOT per charge? I moved from ZTA to ZTO on Day one to get rid of Claro bloatware

Was thinking about to back to ZTA rom, to see if i get any better than this
[Samsung Galaxy S21 Ultra] ljcm:
I'm testing that today. On idle I went from 97% down to 93 or 92% in the morning, in a span of 8h or so.

With my usage today so far (GPS, Bluetooth and mobile data on, browsing the internet with Spotify downloaded songs playing), I'm getting an estimate of 6h of SOT, for 100-0. To me, that's unacceptable. My phone came in the box with no battery from the get go, I think I got a defective unit.
[Samsung Galaxy S21 Ultra] Dizzyrul3z:
Well 6h of SOT with gps, bt, etc is quite good 4 me...
[Samsung Galaxy S21 Ultra] ljcm:
What do you make of people getting 10h+ of SOT? Outliers or just not using GPS/BT and only on WiFi etc?

I really don't understand how people can play games, watch YouTube and browse apps while still getting way over 6h of SOT, while I am struggling to get 6h from 100% without gaming, just browsing and normal light usage.

In one hour of SOT, I went from 92% down to 75%, so that's where the estimate is coming from (about 15%/h). Is this really supposed to be normal for this type of usage? Cell strength here is good, using BT only for watch active 2, literally just browsed Twitter, used Discord and Telegram with Spotify playing in the background. Screen brightness at about 15%.

And now I'm getting 23%/h discharge if I have my screen on, literally just replying to Telegram.
[Samsung Galaxy S21 Ultra] Dizzyrul3z:
Well my usage is close to yours but i can get more than 3h of sot....
[Samsung Galaxy S21 Ultra] ljcm:
I've now been told to factory reset and see if that improves anything. I will try not updating the firmware to see if somehow the may update (no june update here) is the culprit here. But if you're getting only 3h of SoT I am so sorry for you. If I was getting that little SoT I'd have returned it immediately, that's clearly not working as intended.
[Samsung Galaxy S21 Ultra] Kharn501:
I feel like doing a second pass through the list of apps in settings and disabling stuff I wasn't using helped battery life even more. I now routinely get 2 days without a charge and can sometimes go pretty much a third day depending on how much I use the phone. Phone is basically running with most of the battery friendly settings enabled which include battery saver, 60 Hz, location off, 5G off, etc.

Anecdotally I feel like disabling some extra facebook stuff helped a ton. More interesting is that it doesn't seem to affect the functionality of the app or FB messenger at all if they're disabled (see second screenshot). I feel like these only started showing up after I used adb though because they have the generic logo next to them.
[Samsung Galaxy S21 Ultra] atcndw:
3.5 to 4 hours of SOT without gaming.....
[Samsung Galaxy S21 Ultra] ccezar2004:
I'm getting 9% down from 100% in 6 hours o er night. That's gotta be to much. I've seen that in GSam but no clue how to read it. Any hints?

Ultra 5G

Dual sim both active on 2G

Wifi on

BT on but not conected

No power management

Screen in full res and refresh (overnight shouldn't count right?)
[Samsung Galaxy S21 Ultra] nitinvaid:
Here is mine
[Samsung Galaxy S21 Ultra] MephoxSlam:
Wqhd+,120hz,90% brightness
[Samsung Galaxy S21 Ultra] ione2380:
Max resolution, max refresh rate, enhanced processing on, connected to my galaxy watch3 all the time.
[Samsung Galaxy S21 Ultra] nightoooo:
How much on Wifi only and how much on 4G?
[Samsung Galaxy S21 Ultra] MephoxSlam:
5 hours wifi 2 hours 4g+spotify
[Samsung Galaxy S21 Ultra] ione2380:
90% wifi.
[Samsung Galaxy S21 Ultra] Security555:
Debloated Exynos, WiFi/Bluetooth on, FHD+ 120Hz, Auto brightness

5G-off, LTE/4G-on
[Samsung Galaxy S21 Ultra] nightoooo:
How did you de bloated your Exynos? And also what did you de bloated? Which apps?
[Samsung Galaxy S21 Ultra] Security555:
If my battery life is something unusual for S21U, it would make more sense to start a new thread, because I uninstalled a lot of useless apps and services I would never use, and then after a week of observation I uninstalled or disabled 10 to 15 more because they drained the battery like no tomorrow, overall I guess I removed around 40 to 50 apps and services, maybe more, I didn't count.

I'm not aware of all services engaged in battery consumption, because before I use any Samsung phone, I debloat everything I don't need, after the procedure I observe all the services I don't use but they run nevertheless in the background and draining the battery, and uninstall all of them.

Today, I hope, I uninstalled the last one DQA it drained 14%, so I hope I'll get even more out of my S21U.

com.samsung.android.dqagent

I came from Huawei, and I'm unexpectedly happy with S21U's battery life though after a week of tinkering.

I'm getting consistently over 10 Hour SOT and 2 days between charging, I'd say in line with my 1,5 y. old Mate 30 pro.

But, Samsung is well known for degradation over time, to prevent unavoidable disappointment, I'd rather stay calm.
[Samsung Galaxy S21 Ultra] Dizzyrul3z:
If it's true, it's so impressive. I guess you don't have you're debloat app list? you have root or you debloat in ADB?
[Samsung Galaxy S21 Ultra] ione2380:
Wat?😮
[Samsung Galaxy S21 Ultra] Security555:
My phone is unrooted, I use debugging bridge (ADB)

adb shell

pm uninstall --user 0

Don't use -k command to preserve data and cache for no reason.

I'm new to S21U, I had experemented a bit to see whether the Ultra is convincing enough to persuade me to stand Samsung's, probably, worst manmade software ever.

It surprisingly did it. I like the hardware, and the option to get rid of almost everything Samsung, otherwise I'd have sent it back.

So,

I'll put every move I did during the last week of debloating, and will make a script, because I'm afraid that some big future update will make the otherwise good hardware/phone terrible again.

Today I removed another package

com.samsung.android.mcfds it drained 6℅ for no reason, I don't even have in my possession another Samsung device.

Samsung's bloatware just run in the background, I mean all of them, even if you don't use the services.

Take a look at my current state, I guess I'll break the 12 Hour SOT barrier
[Samsung Galaxy S21 Ultra] Da1e7150:
If you could upload details of what you removed I wouldn't mind seeing if I can get the same battery stamina as you
[Samsung Galaxy S21 Ultra] nightoooo:
The problem with this kind of "debloating" a phone may remove/brake important functionalities in the phone.

For my part, i have so many things i am aware of in my phone i want the full potential of it, i don't accept to disable something that will create another limitation. So my point here, if i want to disable some apps, it's better to exactly know which ones, but to experiment .. i find it time consuming and may cause my phone to work bad then i have to restore everything ..

Once before, there was a Package Disabler that we could download from Google Play store, but they have removed it several times, i am not sure if it's remaining there, what was good in these apps that we get info about each package that we could disable or to keep. With ADB, it's a bit more complicated and dangerous.
[Samsung Galaxy S21 Ultra] Goku1992:
This is the reason i debloat the phone the first day :) then if everything works i start the setup :) ive disabled many apps and my battery is amazing :)