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General Battery life experience

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Security555

Senior Member
Mar 7, 2008
409
200
I wonder why you didn't root your phone it would be even more logical because you will have a pure phone without bloats ..
I always did, in the past,
the only way I customize my phone is by building my very own ROM from AOSP,
but it is so time consuming first to de-google AOSP, and then to tinker with the proprietary Samsung drivers, bootloader to make it work.
That's why you don't see AOSP ROMs for S21U.

All Samsung based ROMs make no sense to me, you'll get the same de-bloated experience you can get by just using ADB, but with tripped Knox, vulnerable bootloader, TWRP with no 2FA (maybe I'm not up to date then correct me) and malicious apps will get root access too.
I'd prefer to have a Sudo command.
From the security point of view it's a huge downgrade.
And again, no Bank app will work.

The only reason to "root" S21U is to being able to remove Game booster, but I'm not a gamer.

The only justifiable reason for me to root a modern phone would be Privacy, but not at the expense of Security, because in the end you going to lose both of them.

Update: here is an illustration what Knox actually does on the Kernel and Boot level.
Knox.png
Knox_cert.png


If someone is interested in technical details, here is a link with a simple explanation:
 
Last edited:
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

Hi Security555!

Would you be able to share us the name of the services and apps that you deleted with the "pm uninstall --user 0" command??

Thanks for your time! ☺️
 

Security555

Senior Member
Mar 7, 2008
409
200
If you click on battery you'll see the 22% is actually all Android system drain, there will be a number of apps that show 22%, not just find my mobile
Nope, only Find my mobile, since I removed it no such issue anymore, the remaining apps are good,
wait a second, almost no Samsung's app is remained besides Camera/Gallery/Knox and Phone.
That's why no app drains my battery anymore, and yet I have a lot of apps, but all of them are FOSS.
 

Security555

Senior Member
Mar 7, 2008
409
200
Hi Security555!

Would you be able to share us the name of the services and apps that you deleted with the "pm uninstall --user 0" command??

Thanks for your time! ☺️
I'm on a vacation trip at the moment, driving from place to place, have no option to put all the apps I removed on a list.
I removed almost every Samsung's app, and Google's system unrelated apps and telemetry, my approach is probably not for everyone.
I envision the future with no closed/proprietary corporate vulnerable crap-spy-software, especially free from Samsung's crapware,
thus I already use 99% of FOSS (F-droid) on my phone and 100℅ in my home lab.
 
I'm on a vacation trip at the moment, driving from place to place, have no option to put all the apps I removed on a list.
I removed almost every Samsung's app, and Google's system unrelated apps and telemetry, my approach is probably not for everyone.
I envision the future with no closed/proprietary corporate vulnerable crap-spy-software, especially free from Samsung's crapware,
thus I already use 99% of FOSS (F-droid) on my phone and 100℅ in my home lab.
Thanks for your comment Security555, I will try to see what I am able to delete.

Have a nice trip! 😊
 

jimv1983

Senior Member
Feb 28, 2011
765
140
Benicia, CA
Still on 91% 😂 I've been playing on my iPad all day so barely touched phone.
That's actually not very good. That comes out to a stand by drain of about 0.72%/hr. It's especially bad considering it's a 5,000mAh battery. That's about 36mA/hr.

Just for comparison when I first got my Pixel 2 XL back in 2017 it had a stand by drain of about 0.333%/hr with a 3,520mAh battery or about 12mA/hr. So still at 96% after 12.5 hours of stand by with a battery that was 30% smaller.
 

Goku1992

Senior Member
Feb 29, 2016
733
162
Dortmund
That's actually not very good. That comes out to a stand by drain of about 0.72%/hr. It's especially bad considering it's a 5,000mAh battery. That's about 36mA/hr.

Just for comparison when I first got my Pixel 2 XL back in 2017 it had a stand by drain of about 0.333%/hr with a 3,520mAh battery or about 12mA/hr. So still at 96% after 12.5 hours of stand by with a battery that was 30% smaller.
Yes! The drain should be max 0,35% per hour. Everything else is to much...

My 7t pro mclaren makes 0,25-0,3% per hour and it has 1000mah less...
 
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ccezar2004

Senior Member
Feb 10, 2007
710
5
bucharest
S21 Ultra... I have made a complete debloat and left it fully charged, optimized, all apps closed, restarted on the night counter.... 7 hours untouched and 16% battery drain... WTF?????
😟
 

ccezar2004

Senior Member
Feb 10, 2007
710
5
bucharest
How the heck you guys get 3d of battery life it's out of my power of understanding

LE starting to think if debloating really helps. I think it really comes down to usage scenarios, aps needed, network coverage and personal phone behaviours 😬
 
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Goku1992

Senior Member
Feb 29, 2016
733
162
Dortmund
How the heck you guys get 3d of battery life it's out of my power of understanding

LE starting to think if debloating really helps. I think it really comes down to usage scenarios, aps needed, network coverage and personal phone behaviours 😬
But im using full hd @60Hz! This is a big difference. Also debloated
 

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  • 2
    Interesting 🤔

    Not gonna try the beta?
    Nope.

    I'm very happy with the way the phone is right now. It's dialled to perfection as far as I'm concerned. After complaining and moaning for months, finally the software has been fine tuned to how it should be.

    Going to a beta release of OneUI built on an Android version which itself is in beta, is bound to come with problems I'm not willing to deal with, especially given that OneUI 4 doesn't seem like a big upgrade as reported by members who have been brave enough to experiment.

    I'm happy reading about the experience of the early adopters here. Will wait till next year before flashing stable A12, that too after 2-3 stable OneUI4 updates.
    1
    After one month of ownership of the S21U, battery life still seems sh*t. I have put many apps to deep sleep and even more to light sleep, still cannot get decent battery life though. It's the first phone after many years that I am afraid of running out of battery during the day with light to medium use.

    Here are some screenshots, any tips/guidance will be highly appreciated.

    Cheers
    T
    1
    I am on the same boat with the members above, the battery drops from 100% to 95% within 20mins of getting unplugged; reminds me of the glorious HTC days.. 🤣

    Below are my latest stars, after reviewing which I am starting to believe that the battery capacity on my one month old phone is the culprit of my battery problems. I switched on my p40 pro two days ago and have it lying on the desk without sim cards but all apps are getting push notifications, updates etc (I even had to update 146 apps in playstore), yet the battery at the moment is 68%, OK I know that not having sim in the phone will significantly reduce battery drain, yet I am sure that the S21U without sim would die in 2 days with no use.
  • 5
    Please post the debloat list when you get the chance. Thanks!
    Hey mate sorry for the long wait, here it is:
    pm uninstall --user 0 com.dsi.ant.plugins.antplus
    pm uninstall --user 0 com.dsi.ant.sample.acquirechannels
    pm uninstall --user 0 com.dsi.ant.server
    pm uninstall --user 0 com.dsi.ant.service.socket

    pm uninstall --user 0 com.samsung.android.app.routines
    pm uninstall --user 0 com.samsung.android.bixby.agent
    pm uninstall --user 0 com.samsung.android.bixby.agent.dummy
    pm uninstall --user 0 com.samsung.android.bixby.service
    pm uninstall --user 0 com.samsung.android.app.settings.bixby
    pm uninstall --user 0 com.samsung.systemui.bixby2
    pm uninstall --user 0 com.samsung.android.bixby.wakeup

    pm uninstall --user 0 com.sec.android.app.dexonpc
    pm uninstall --user 0 com.sec.android.desktopmode.uiservice
    pm uninstall --user 0 com.sec.android.app.desktoplauncher
    pm uninstall --user 0 com.samsung.desktopsystemui

    pm uninstall --user 0 com.android.printspooler
    pm uninstall --user 0 com.android.bips
    pm uninstall --user 0 com.google.android.printservice.recommendation

    pm uninstall --user 0 com.facebook.appmanager
    pm uninstall --user 0 com.facebook.katana
    pm uninstall --user 0 com.facebook.services
    pm uninstall --user 0 com.facebook.system

    pm uninstall --user 0 com.sec.factory.camera
    pm uninstall --user 0 com.sem.factoryapp
    pm uninstall --user 0 com.sec.factory
    pm uninstall --user 0 com.sec.factory.cameralyzer
    pm uninstall --user 0 com.sec.android.app.factorykeystring
    pm uninstall --user 0 com.sec.android.app.servicemodeapp
    pm uninstall --user 0 com.sec.android.RilServiceModeApp
    pm uninstall --user 0 com.sec.android.app.bluetoothtest
    pm uninstall --user 0 com.sec.android.app.hwmoduletest
    pm uninstall --user 0 com.sec.android.app.wlantest
    pm uninstall --user 0 com.sec.epdgtestapp

    pm uninstall --user 0 com.google.android.apps.docs
    pm uninstall --user 0 com.google.android.apps.photos
    pm uninstall --user 0 com.google.android.videos
    pm uninstall --user 0 com.google.android.apps.youtube.music
    pm uninstall --user 0 com.android.chrome
    pm uninstall --user 0 com.google.android.apps.turbo
    pm uninstall --user 0 com.google.android.googlequicksearchbox
    pm uninstall --user 0 com.google.android.partnersetup
    pm uninstall --user 0 com.google.ar.core
    pm uninstall --user 0 com.google.android.tts
    pm uninstall --user 0 com.google.android.gms.location.history
    pm uninstall --user 0 com.google.android.apps.maps
    pm uninstall --user 0 com.google.android.feedback
    pm uninstall --user 0 com.android.hotwordenrollment.okgoogle
    pm uninstall --user 0 com.android.hotwordenrollment.xgoogle
    pm uninstall --user 0 com.google.android.youtube
    pm uninstall --user 0 com.google.android.apps.tachyon
    pm uninstall --user 0 com.google.audio.hearing.visualization.accessibility.scribe
    pm uninstall --user 0 com.google.android.projection.gearhead
    pm uninstall --user 0 com.google.android.apps.restore
    pm uninstall --user 0 com.google.android.configupdater
    pm uninstall --user 0 com.google.android.syncadapters.contacts
    pm uninstall --user 0 com.google.android.syncadapters.calendar
    pm uninstall --user 0 com.google.android.onetimeinitializer

    pm uninstall --user 0 com.hiya.star
    pm uninstall --user 0 com.samsung.android.smartcallprovider

    pm uninstall --user 0 com.samsung.android.visionarapps
    pm uninstall --user 0 com.samsung.android.aremoji
    pm uninstall --user 0 com.samsung.android.aremojieditor
    pm uninstall --user 0 com.sec.android.mimage.avatarstickers
    pm uninstall --user 0 com.samsung.android.ardrawing
    pm uninstall --user 0 com.samsung.android.arzone
    pm uninstall --user 0 com.samsung.android.app.camera.sticker.facearavatar.preload
    pm uninstall --user 0 com.samsung.android.livestickers
    pm uninstall --user 0 com.sec.android.app.pink
    pm uninstall --user 0 com.samsung.android.stickercenter
    pm uninstall --user 0 com.samsung.android.scan3d

    pm uninstall --user 0 com.samsung.android.knox.containeragent
    pm uninstall --user 0 com.samsung.android.knox.analytics.uploader
    pm uninstall --user 0 com.sec.enterprise.knox.cloudmdm.smdms
    pm uninstall --user 0 com.samsung.android.knox.attestation
    pm uninstall --user 0 com.sec.enterprise.knox.attestation
    pm uninstall --user 0 com.samsung.android.knox.containercore
    pm uninstall --user 0 com.samsung.knox.securefolder
    pm uninstall --user 0 com.samsung.android.bbc.bbcagent
    pm uninstall --user 0 com.android.managedprovisioning
    pm uninstall --user 0 com.samsung.knox.keychain
    pm uninstall --user 0 com.knox.vpn.proxyhandler
    pm uninstall --user 0 com.samsung.ucs.agent.ese

    pm uninstall --user 0 com.linkedin.android

    pm uninstall --user 0 com.microsoft.appmanager
    pm uninstall --user 0 com.microsoft.office.officehubrow
    pm uninstall --user 0 com.microsoft.office.outlook
    pm uninstall --user 0 com.microsoft.skydrive

    pm uninstall --user 0 com.samsung.sree
    pm uninstall --user 0 com.samsung.android.voc
    pm uninstall --user 0 com.samsung.android.drivelink.stub
    pm uninstall --user 0 com.samsung.android.forest
    pm uninstall --user 0 com.samsung.android.fmm
    pm uninstall --user 0 com.samsung.android.game.gametools
    pm uninstall --user 0 com.samsung.android.game.gamehome
    pm uninstall --user 0 com.samsung.android.game.gos
    pm uninstall --user 0 com.samsung.android.calendar
    pm uninstall --user 0 com.samsung.android.app.ledbackcover
    pm uninstall --user 0 com.samsung.android.app.simplesharing
    pm uninstall --user 0 com.samsung.android.app.social
    pm uninstall --user 0 com.samsung.android.rubin.app
    pm uninstall --user 0 com.samsung.android.coldwalletservice
    pm uninstall --user 0 com.samsung.android.scloud
    pm uninstall --user 0 com.samsung.android.app.spage
    pm uninstall --user 0 com.samsung.android.mdx
    pm uninstall --user 0 com.samsung.android.kidsinstaller
    pm uninstall --user 0 com.samsung.android.app.mirrorlink
    pm uninstall --user 0 com.samsung.android.samsungpass
    pm uninstall --user 0 com.samsung.android.samsungpassautofill
    pm uninstall --user 0 com.samsung.android.authfw
    pm uninstall --user 0 com.samsung.android.spayfw
    pm uninstall --user 0 com.samsung.android.svoiceime
    pm uninstall --user 0 com.samsung.android.fast
    pm uninstall --user 0 com.samsung.sec.android.teegris.tui_service
    pm uninstall --user 0 com.samsung.android.smartswitchassistant
    pm uninstall --user 0 com.samsung.klmsagent
    pm uninstall --user 0 com.samsung.android.app.tips
    pm uninstall --user 0 com.samsung.android.themestore
    pm uninstall --user 0 com.samsung.android.themecenter
    pm uninstall --user 0 com.samsung.android.mdecservice
    pm uninstall --user 0 com.samsung.android.sm.devicesecurity
    pm uninstall --user 0 com.samsung.android.oneconnect
    pm uninstall --user 0 com.samsung.android.beaconmanager
    pm uninstall --user 0 com.samsung.android.app.reminder
    pm uninstall --user 0 com.samsung.android.aware.service
    pm uninstall --user 0 com.samsung.android.app.sharelive
    pm uninstall --user 0 com.samsung.android.mateagent
    pm uninstall --user 0 com.samsung.android.app.omcagent
    pm uninstall --user 0 com.samsung.android.securitylogagent
    pm uninstall --user 0 com.samsung.klmsagent
    pm uninstall --user 0 com.samsung.android.brightnessbackupservice
    pm uninstall --user 0 com.samsung.android.shortcutbackupservice
    pm uninstall --user 0 com.samsung.gamedriver.S11MaliG77
    pm uninstall --user 0 com.samsung.accesory
    pm uninstall --user 0 com.samsung.android.dynamiclock
    pm uninstall --user 0 com.samsung.clipboardsaveservice
    pm uninstall --user 0 com.samsung.android.icecone
    pm uninstall --user 0 com.samsung.android.mobileservice
    pm uninstall --user 0 com.samsung.sait.sohservice
    pm uninstall --user 0 com.samsung.crane
    pm uninstall --user 0 com.samsung.android.sdm.config
    pm uninstall --user 0 com.samsung.android.allshare.service.mediashare
    pm uninstall --user 0 com.samsung.android.mdm
    pm uninstall --user 0 com.samsung.android.cidmanager
    pm uninstall --user 0 com.samsung.android.smartmirroring
    pm uninstall --user 0 com.samsung.android.mdx.kit
    pm uninstall --user 0 com.samsung.android.service.tagservice
    pm uninstall --user 0 com.samsung.android.easysetup
    pm uninstall --user 0 com.samsung.android.net.wifi.wifiguider
    pm uninstall --user 0 com.samsung.android.app.watchmanagerstub
    pm uninstall --user 0 com.samsung.ucs.agent.boot
    pm uninstall --user 0 com.samsung.android.dqagent
    pm uninstall --user 0 com.samsung.android.aircommandmanager
    pm uninstall --user 0 com.samsung.android.samsungpositioning
    pm uninstall --user 0 com.samsung.android.ipsgeofence
    pm uninstall --user 0 com.samsung.android.mcfserver
    pm uninstall --user 0 com.samsung.android.svcagent
    pm uninstall --user 0 com.samsung.storyservice
    pm uninstall --user 0 com.samsung.android.da.daagent
    pm uninstall --user 0 com.samsung.ipservice
    pm uninstall --user 0 com.samsung.safetyinformation
    pm uninstall --user 0 com.samsung.android.sm.policy
    pm uninstall --user 0 com.samsung.android.tapack.authfw
    pm uninstall --user 0 com.samsung.android.location
    pm uninstall --user 0 com.samsung.android.camerasdkservice
    pm uninstall --user 0 com.samsung.android.cameraxservice
    pm uninstall --user 0 com.samsung.android.smartcallprovider
    pm uninstall --user 0 com.samsung.faceservice
    pm uninstall --user 0 com.samsung.android.smartface
    pm uninstall --user 0 com.samsung.sec.android.application.csc
    pm uninstall --user 0 com.samsung.aasaservice
    pm uninstall --user 0 com.samsung.android.digitalkey
    pm uninstall --user 0 com.sec.android.easyMover
    pm uninstall --user 0 com.sec.android.easyMover.Agent
    pm uninstall --user 0 com.sec.android.cover.ledcover
    pm uninstall --user 0 com.sec.android.daemonapp
    pm uninstall --user 0 com.sec.android.app.parser
    pm uninstall --user 0 com.sec.android.app.shealth
    pm uninstall --user 0 com.sec.android.sdk.health
    pm uninstall --user 0 com.sec.android.service.health
    pm uninstall --user 0 com.sec.android.app.billing
    pm uninstall --user 0 com.sec.android.widgetapp.webmanual
    pm uninstall --user 0 com.sec.android.app.SecSetupWizard
    pm uninstall --user 0 com.sec.android.app.setupwizardlegalprovider
    pm uninstall --user 0 com.sec.android.app.ringtoneBR
    pm uninstall --user 0 com.sec.android.app.setupwizardlegalprovider
    pm uninstall --user 0 com.sec.android.diagmonagent
    pm uninstall --user 0 com.sec.android.app.DataCreate
    pm uninstall --user 0 com.sec.android.app.samsungapps
    pm uninstall --user 0 com.sec.android.app.chromecustomizations
    pm uninstall --user 0 com.sec.android.preloadinstaller
    pm uninstall --user 0 com.sec.android.app.popupcalculator
    pm uninstall --user 0 com.sec.android.widgetapp.easymodecontactswidget
    pm uninstall --user 0 com.sec.android.app.personalization
    pm uninstall --user 0 com.sec.android.sdhms
    pm uninstall --user 0 com.sec.android.emergencymode.service
    pm uninstall --user 0 com.sec.android.emergencylauncher
    pm uninstall --user 0 com.sec.android.provider.emergencymode
    pm uninstall --user 0 com.sec.android.app.apex
    pm uninstall --user 0 com.sec.android.app.applinker
    pm uninstall --user 0 com.sec.android.uibcvirtualsoftkey
    pm uninstall --user 0 com.sec.android.app.ocrservice
    pm uninstall --user 0 com.sec.location.nsflp2
    pm uninstall --user 0 com.sec.spp.push
    pm uninstall --user 0 com.sec.mhs.smarttethering
    pm uninstall --user 0 com.sec.mldapchecker
    pm uninstall --user 0 com.sec.enterprise.mdm.services.simpin
    pm uninstall --user 0 com.sec.sve
    pm uninstall --user 0 com.sec.bcservice
    pm uninstall --user 0 com.sec.samsung.advp.imssettings
    pm uninstall --user 0 com.sec.modem.settings
    pm uninstall --user 0 com.android.cts.ctsshim
    pm uninstall --user 0 com.android.cts.priv.ctsshim
    pm uninstall --user 0 com.android.bookmarkprovider
    pm uninstall --user 0 com.android.egg
    pm uninstall --user 0 com.android.emergency
    pm uninstall --user 0 com.android.wallpaperbackup
    pm uninstall --user 0 com.android.dynsystem
    pm uninstall --user 0 com.android.apps.tag
    pm uninstall --user 0 com.android.providers.partnerbookmarks
    pm uninstall --user 0 com.android.providers.calendar
    pm uninstall --user 0 com.android.calllogbackup
    pm uninstall --user 0 com.android.providers.userdictionary
    pm uninstall --user 0 com.android.autoinstalls.config.samsung
    pm uninstall --user 0 android.autoinstalls.config.samsung
    pm uninstall --user 0 com.skms.android.agent
    pm uninstall --user 0 com.diotek.sec.lookup.dictionary
    pm uninstall --user 0 com.google.android.setupwizard
    pm uninstall --user 0 com.samsung.android.cmfa.framework
    pm uninstall --user 0 com.samsung.gpuwatchapp
    pm uninstall --user 0 com.samsung.android.hdmapp
    pm uninstall --user 0 com.samsung.android.knox.pushmanager
    pm uninstall --user 0 com.samsung.android.mapsagent
    pm uninstall --user 0 com.google.android.cellbroadcastreceiver
    pm uninstall --user 0 com.samsung.oda.service
    pm uninstall --user 0 com.samsung.android.accessibility.talkback

    pm uninstall --user 0 com.samsung.android.service.peoplestripe
    pm uninstall --user 0 com.samsung.android.app.sbrowseredge

    pm uninstall --user 0 de.axelspringer.yana.zeropage
    4
    Hey guys,
    So a month after the launch of the Galaxy S21 Ultra, what is your battery life experience? Give us your feedback and numbers.
    Please mention your chipset (Exynos or Snapdragon) and post a screenshot if possible.

    Personally, I'm pretty satisfied with battery life. I usually get a day and a half with around 9h of SOT. I have the Exynos model and my screen is set to 1080p with standard motion smoothness. Bluetooth is always on and I use 4G most of the time. All other settings are set to default.

    Screenshot_20210303-104227_GSam Battery Monitor.jpg
    3
    Can't complain, I get around 5 hours SOT a day with 30 to 40% left in the tank.

    That said, I am stuck at home all day on WiFi, so sure that will decrease when I'm out and about with location on and 4g/5g but still pretty decent.

    Exynos, QHD, 120hz, active 2 connected all day, some debloating and Bixby routines to switch to 60hz for some apps, turn off location/NFC/4g at home and sync/AOD on when charging

    Screenshot_20210303-170136_GSam Battery Monitor.jpg
    3
    Android 12 could make the S21U a beast for performance and battery life. I've found performance to be good anyway.. battery could be better. Guess we'll have to wait for Android 12.
    3
    zsPWLtE.png


    I got the Exynos version.