Please check the 1st comment in the link attached and let us know if it is reliable or not

[Vishnu R Nair1]

Hai.I recently came through a post here... but i doubt its reliability.. Please check it and let us know. im adding the link here... "https://forums.windowscentral.com/nokia-lumia-1020/279060-how-i-solved-my-battery-drain-my-lumia-1020-a.html"