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S21 Battery Life Draining Quickly

(Topic created: 01-30-2021 10:29 PM)
Hauti
Astronaut
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Galaxy S21

I've had my Galaxy S21 for 2 days, and the battery life is absolutely terrible. It barely makes it 8hrs, and for most of that time, I'm at work and not even using it. I lost 30% of battery life listening to 3 songs. I understand it learning etc but this is ridiculous. Every other Galaxy I've ever had has had great battery life, right out of the box. Is it defective? 

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70 Replies
invis52
Nebula
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Galaxy S21
3 hours SOT with s21 ultra 720p 120hz at 59%? this seems worse than expected, but when i don't touch the screen and i leave it on it lasts a lot longer until battery drops even with apps open this is where the 10hz saves battery
useryYxYhRNvr8
Astronaut
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Galaxy S21

I have the Exynos version for 3 days so far and it overheats to the point where I cannot even touch it!

it has dropped 10% in 15 minutes of just texting on WhatsApp, no other apps were opened. keep I mind, my phone was on dark mode, power-saving mode, 60hz refresh rate and on low brightness.

It is incredibly upsetting because if I am paying for a high-end product I expect to be able to use the features that make it high end. I should not have to compromise and use night mode and a slower refresh rate.

 

overnight, I took off my wifi, Bluetooth, data, location etc. and it dropped 14%. it is unacceptable for a flagship to lose this amount of battery by just being on. nothing else. I am also unable to multi-task due to the overheating and the phone lags. Incredibly disappointed

 

today I used my phone for nothing but replying to a few messages and scrolling through Instagram for a few minutes but the battery has drained twice and overheated multiple times!

 

My J7 Prime 2 had a better battery performance than this and barely overheated.  This is embarrassing! 

 

 

 

useryYxYhRNvr8
Astronaut
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Galaxy S21

did it eventually stop overheating?

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SamsungAdam
Samsung Moderator
Samsung Moderator
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Galaxy S21

Thanks for reaching out. This forum is for support of US products and customers. As your product is a non-US model and support for these models is very limited, please seek a support team for your area. You can do so by using this link: https://www.samsung.com/us/common/visitlocationsite.html


Be sure to click " ✓ Accept as Solution" when you find an answer that works for you.





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TheTroutinator
Constellation
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Galaxy S21
factory reset ?
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invis52
Nebula
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Galaxy S21
I was thinking of factory resting my phone unexpected battery drain only lasting 7 ish hours with screen on supposto be 10 to 11 hours of SOT
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cj5neal
Constellation
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Galaxy S21
stop being obsessed with SOT, it's far too subjective. too many usage factors to compare SOT between users.
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CalderCay
Supernova
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Galaxy S21
.
Agreed (with @cj5neal)
Everyone's usage is different and so will be reflected in performance statistics.

Some folks only make phone calls, surf the web, text message
Some folks are into photography and videos.
Some folks are into gaming.

Each of those will result in different statistics.
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invis52
Nebula
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Galaxy S21
yes but im just mostly on google or samsung internet it's lasting the same as my lg g8 that i just got rid of
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CalderCay
Supernova
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Galaxy S21
.
Something to keep in mind.

For the first week or so (2-3?), your phone will spend time learning your usage patterns.

After this period of time, battery usage will improve.

For me, I have a slightly different policy about initial phone settings. Where many folks "turn everything on", I do the opposite, I. e., I restrict many things for about 2-4 weeks.

I'm up from 6am to midnight almost everyday, using the phone as often as it makes sense (not overdoing it, mind you).

About midnight, I'm at about 20% now ... 3-4 days ago, I'd be charging around 8-9pm, so I'm seeing improvement already.

Today, I've reverted to "turn on everything" (almost everything :), like Adaptive motion and Adaptive Brightness, background activity for some apps.

So I'll take another slight hit in battery usage for an couple days, but it will improve.

Here's how to think about it. when you buy a new car, you should "take it easy" for the initial 1,000-5,000 miles for a proper "break in period".

However flawed my methods seem, it works for me with a positive outcome.