Samsung m21 battery backup and draining issue

[SHIVENDRAKUMAR]

Mere Samsung m21 6000mah jaisa battery  backup  nhi de rha issme 90% charge karne pe sirf 15 hour battery backup sirf de rha hai kyo ...

Mera ek realme 5 phone hai is me 5000 mah battery hai issme 90% charge karne pe 1 din 16 hour battery backup de rha hai...

 So plz fix this problem in Samsung m21 as soon as possible plz give battery backup like 6000 mah 

[DarkClawX]

my mother's Lava mobile with 3000mAH battery says "2 days left" with 100% full charge, but doesn't even last for 5 hrs when used continuously (drains nearly 20% battery for 3 hrs calling)

[Anikroyale]

Bhai yeh bas estimated values hai, aur Chinese devices apne battery ko over estimate karte hai. 15hr dikha raha hai, that never means ki 15 hr hi chalega, usse zyada ya kam bhi chal sakta hai. Same with the realme phone.

[SrajTech]

Don't go with these chinese estimations
share the screenshot of battery usage here in comment section

[DiwakarDubey]

it doesn't mean that you will get that much time please use it and write about screen on time

[tx09]

it is just estimation it depends on your usage.I get only 10 hrs battery backup in m21 because my usage is high.

[lucifer638r]

its from your usage pattern

[lucifer638r]

basically it says how long your phone usually last from a full charge.
I charge once in 2 days due to medium use

[cs-member13]

Dear Samsung Member,

Greetings from Samsung Customer Support!

We apologize for the inconvenience caused to you. To resolve battery issue kindly follow the below given step:-

- Battery optimization:- Settings > Select Device Maintenance/Device Care>Optimize>Optimize all options like Battery, Storage and Memory

For more information on battery drainage please click on the link below:-
http://www.samsung.com/in/support/skp/faq/1101689

If the issue still persist, kindly register your concern in Samsung Members app (Samsung Members app > Get help > Feedback > Error report/ask question). Kindly send us the screenshot (which apps are consuming most of the battery).
Note: Please send device log files within 15 minutes of issue occurrence along with the exact issue details.

Thank you for writing to Samsung.

Warm Regards,
Samsung Customer Support