Battery drain issue in Samsung M21 (2020)

[Watta_Monster]

Samsung M21 has received an update this month stating that the camera performance will be better. Honestly, the camera performance has improved a bit. But the interesting thing about the M series is its large battery. But since the August update, its battery backup has been further reduced. 😔 We know that Samsung can do everything. Please fix this issue with the next update from Samsung or optimize the One UI 3.1.1 / 3.5 so that there are no problems. 🙂

[Anonymous]

Only battery drain issue

But the device is Awesome
Display,Camara is good

[prashantanp955]

Please read my advice once. For solving battery draining, hanging and background app running problem. 

 Follow the step below .

 1. Go to setting 

 2. Click device care and battery setting 

 3.Open Battery 

 4. Turn on power saving mode 

 5. Put app to sleep mode 

 6. Rearly used app put in deep sleeping mode. 

 7. Go to developer process in setting and turn off background data usage limit. How to open developer mode 

 a. Go to setting of your mobile 

 b. Go to about phone 

 c. go to software information 

 d. Click 7/8 times your mobile build number then devoloper process unlock in your mobile .

 After done all your problem being solved . Sure . 

 Believe me and accept solution .

[Anonymous]

Comment on my post, I will accept solution of yours if it is correct 🙂🙂

[Members_3Ofphlv]

I'm also m21 2020 model user .after August update my phones battery backup improved 25% .i recommend you to factory reset your phone .i already did this after update. my battery backup is really improved then before. my phone is 1year old .

[Chanakya_Reddy]

Same problem with my M21 after One UI 3.0 update and not solved till now.

[My_Galaxy_A30]

Brother, I have the original version of One UI on the A30, but it has a lot of lag, but the battery backup is good. It would have lagged a bit if you had the original version of the One UI on your M21, but the battery backup would have been better. It's a software bug. No problem, Samsung will fix it

[Samsung_Support2]

Dear Samsung Member,

Greetings from Samsung Customer Support!

We apologize for your inconvenience. To resolve your device battery drain issue please visit this link: https://www.samsung.com/in/support/mobile-devices/samsung-mobile-battery-drain-issue/ 

For further assistance, register your concern in Samsung Members Application (Open Samsung Members Application > Get help > Send Feedback > Error report/Ask questions).

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support