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Original topic:

Battery drainage

(Topic created on: 09-04-2022 11:30 PM)
puglush
First Poster
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Galaxy S21 Series
My Samsung s21 is a nice phone but the battery life is horrendous from 3pm till 10pm the same day it goes from fully charged to absolutely empty,I don't download or stream anything like that I only use my phone for the basics,what can I do 
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8 REPLIES 8
Emma_4xx4
Apprentice
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Galaxy S21 Series
Brake the phone 😭
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Emma_4xx4
Apprentice
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Galaxy S21 Series
Or you could go get it fixed or buy a knew one x
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Blessed4life
Hotshot
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Galaxy S21 Series
Hi, if everything else fails backup your phone & do a factory reset, that should fix most issues, unless you have a faulty device.
Hope this helps
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Maria_vm
Helping Hand
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Galaxy S21 Series
Thats odd. Im on my second day of usage from a full charge and my phone is on 51%. And thats games, social media, music, use of 5g and bluetooth too. I would do what @Blessed4life says and back up the device to perform a factory data reset. If that fails your phone must be faulty so its worth sending it to where you got it from so they can repair it.
puglush
First Poster
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Galaxy S21 Series
That's a stupid answer,by the way you spell it BREAK not brake,that's what you do when you're driving a car
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AndrewL
Moderator
Moderator
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Galaxy S21 Series

@puglush: I'm sorry to hear that you're having issues with your battery life. If you take a look at the following energy saving tips, do you notice an improvement? 

- Shut down all background apps when not in use via the Recent Apps button
- Settings > Connections > More Connection Settings > Nearby Device Scanning > Off
- Turn off Wi-Fi, Mobile Data and Bluetooth when not in use
- Head to Settings > Battery and Device Care > Battery > Power Saving Mode > On, and check the additional options below
- Go back and select More Battery Settings > Adaptive Battery > On > Enhanced Processing > Off.

If not, head to the Samsung Members app > Get Help > Diagnostics > Battery, and check to see if it flags any issues. 

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K45h
Explorer
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Galaxy S21 Series
You're not alone, the battery on my s21 ultra is c**p. I've tried cache partition as well. I'm not gonna factory reset every time the battery tanks. The standby time is p**s take. No, I'm not gonna disable and put the phone on low power mode, I didn't buy it for that. If I wanted to do that I'd have bought one of the other s**t Samsung midrangers. Can't wait to see what apple bring later this year. Now they know how to make the battery efficient. I should know, I had an iPhone XS max before. Regretted the decision ever since
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Jam13
Apprentice
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Galaxy S21 Series
Same issue here, I take the phone off charge at 0700 and by 1700 I have to charge it again, after minimal use during the day at work.

The Samsung diagnostics are showing no issues, I've tried a cache wipe, factory reset, battery monitoring apps etc. Battery life was fine for the first 10-12 months then it went bad after the Android 12 upgrade and none of the updates since have sorted the problem. I reckon this will be my last Samsung phone.
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