Samsung S21 8/256, super bad battery life

[Stacey S21]

Enabled all possible battery life saving methods, still my Samsung S21 still drain my battery: FAST.

I got my new phone (model SM-G991B) on Monday, April 12 2021 > and have not yet used my full workflow on it. Screentime is aprox 3 hours. Still I must charge my battery 2 times a day. This is a big No Go. 

With this drainage, I can't rely on this phone for a full workday outside without any charging outlets available. 

I hope Samsung will fix this with a software upgrade. 

[SaiChaotic]

 

 after the latest update I felt my phone drained faster than usual I only get 5 hours screen on time but after a few weeks this has been the battery performance I've been getting. 

[SaiChaotic]

From my previous setup I changed this and I've place the facebook app to sleep.

And here's what I'm getting now which is much better.

 

 

[SaiChaotic]

 this is fine with me now though, managed to get to 2 days. On wqhd and adaptive refresh rate, Bixby routine to. Set refresh rate to standard on messaging apps. Spen off as I don't have one. 

[nonstopp9]

Does it also improve the heat issue?

[Maria_vm]

Im not sure, it might be I dont know. I have never used S21, all I know is on many phones the battery takes about 5-7 days to properly settle when it learns usage patterns.

[Lucas3489]

Have had the phone for little more than a month

after couple of weeks decided to factory reset (had downloaded apps via the switch-app) but still poor batter life. 

The phone is great, display performance and camera top notch but the battery drains way too fast for a 1400€ phone (I have the exynos 512/16).

Mostly on wifi, 5g off, FHD+ 120hz. 

Today's SOC

yesterday reached 5 hrs soc and had 15% battery left

I really hope samsung fixes this, it's getting annoying.

 

[nonstopp9]

After using the phone for 4-5 days, my S21 ultra heat issue is better now. Not the coolest but it doesn't heat up like the first day

[SaiChaotic]

 this is my sot

[qcmut]

2 days ! I assume it is not SOT since that is not possible.  Show me the graph of the charging. I think you mean that the standby time is 2 days which is not that great at all.

[SaiChaotic]

 i have managed to have 2 days standby and 6hrs sot