GALAXY M21

[Galaxythaslim]

galaxy m21 batterdrain faster compared to the oneui 2.0 preview updates 

In one ui 2.1 sep 1 software security updates drink more battery 

SAMSUNG should fix this???

[Faraz_F34_5G · Accepted solution]

It's clear.
With every Update, they either ad bugs or make the optimization even worse.
but atleast don't add ads like Chinese.

wait for next security patch.
Next month They will sure fix it.

[Faraz_F34_5G · Accepted solution]

kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error reports).

[Ehsank · Accepted solution]

if after update you can do one things and lets see

A. Wipe Cache Partition.
Steps to perform.
1) Turn off the device.
2) Press and hold the Volume Up key and the spower button.
3) When the Android logo displays, release all keys.
4) Press the Volume down key to navigate and select "Wipe cache partition".
5) Press Power key to select. When the wipe cache partition is complete, Select Reboot System.
6) Press the Power key to restart the device.

[Ehsank]

Besides above settings do some more settings to save more battery life and observe for next 1-2 days, it will give a noticeable difference

1. Connection>more connections settings> disable nearby device settings

2. Location>improve accuracy >disable
A. Wifi scanning
B. Bluetooth scanning .

3. Device care>battery >power mode>select "optimised" and "adaptive power saving".

And then click on "app power management >
And enable these 2 options.
A. Adaptive battery
B. Put Unused Apps to Sleep.

4. Long press on each app specially 3rd party(LIKE FACEBOOK, INSTA,YOUTUBE) and rarely used apps and also ON "GOOGLE APP" as well, then click on>app info> then go to these 3 options below on by one

A. Mobile data> allow background data usage>off

B. Battery >allow background activity >off

C. Notification >disable unnecessary notifications like promotional and unnecessary reminder notifications.

5. Go to settings >apps>search "weather" >click on settings icon right side > change "auto refresh" settings as per your requirements and disable some unnecessary reminder. ( due to auto refresh it continuously consuming battery?)


6. If you use Facebook frequently then disable "auto play video"
And if you are mostly uses mobile, on wifi connection then also disable "auto play videos" in YouTube.

[Galaxythaslim]

Already cleared cache 

After the update 

[Ehsank]

already cleared cache means wipe cache partition?
and if you done that then please do these above settings and just wait for 1-2 days

[Ehsank]

for just an example see attached image from Google settings then you know how much notification settings in Google, which consuming battery unnecessary
also see 2 more option even you off your location they continuously search and using your battery