General Battery life experience

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Elixir_

Senior Member
Jan 31, 2015
118
41
Milan
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
 

mtm1401

Senior Member
Apr 10, 2018
346
115
Samsung Galaxy S21 Ultra
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
 

Elixir_

Senior Member
Jan 31, 2015
118
41
Milan
How is you Phone radio usage so low. Mine is always way higher. Does that mean the signal is bad??
I think bad signal is definitely a factor. In my case, I stay at home most of the time (remote work) or at the office and in both locations I have a very good signal. Also my carrier doesn't support 5G yet, only 4G.

Standby for me has been amazing.
Ikr, even with Bluetooth on, I lose barely 3% at night.
 

nightoooo

Senior Member
Jun 17, 2016
62
26
Had Exynos S21 Ultra that i didn't like the battery life of it. I had barley 4h of SoT.

I send it back to Samsung and got a Snapdragon HK version and i am getting 4.5h with the second full charging. I hope it gets better in a week or two.

Screenshot_20210305-195133_Device care.jpg
 
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Khalid Madkour

Senior Member
Mar 13, 2016
55
11
Had Exynos S21 Ultra that i didn't like the battery life of it. I had barley 4h of SoT.

I send it back to Samsung and got a Snapdragon HK version and i am getting 4.5h with the second full charging. I hope it gets better in a week or two.

View attachment 5241045
It will get better. I was like you.
Then I reset my phone and didn't use smart switch and after couple of days I am getting now around 1h SOT per 10% with bluetooth and 4d enabled. Full resolution and adaptive framerate and sometimes I switch to 96.
 

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  • 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.
    2
    I have the Exynos version and after the May update my battery life went to ****. After reading this thread some users suggested clearing the cache so I figured out how to do that and while I was in recovery did an app repair as well. Now my battery life has gone back to being absolutely excellent 👌🏽 standby battery performance has also improved. I'm happy that I didn't need to reset my phone.

    I noticed some users setup via smart switch, but I didn't. I used the Google backup feature from previous Android phone
    2
    I spoke to Samsung on twitter and they claim a 21% loss over 7 hours is normal 🤣 when the phone isn't been used.
    2
    Guys, do you have any problem with low battery %? It happened twice with me, when the battery decreased to 5% the s21u shut off in less then 5 minutes
    Yes mine does same. It's normal as it's to prevent the phone discharging below 0% it actually still has battery when it powers off. I've only drained mine twice as it's not good for health. If possible keep it above 20%
    2
    It maybe stupid, but do you loose first 2% in just couple of minutes after unolugging? It looks like in my case that I can unplug, leave it on my desk and after 10 min there will be 98%?
    100 to 99 in like 10minutes of doing nothing 🤣
  • 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
    4
    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
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    pm uninstall --user 0 com.samsung.android.app.routines
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    pm uninstall --user 0 com.sec.android.app.dexonpc
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    pm uninstall --user 0 com.android.printspooler
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    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.
    2
    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
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