my samsung s6 battery draining very fastly

[AC Question]

My samung s6 battery draining very fastly .my auto brightness is off,power saver off,location off,wifi off,mobile data off ,everything off
I instal GSM battery moniter .It tells that your screen is taking more battery means 2% while on and 15%whille off.how could I resolve this issue ?

 

[belodion]

What is shown as using the charge after a drain to about 40% from 100%?

https://forums.androidcentral.com/showthread.php?t=409154