why S10 plus battery is draining faster??

[Thanish]

Its getting drained without using my phone thou iam using dark mode and dark wallpaper

[TechnoGenuine]

You will have to tweak the settings to get optimal battery life. I will make a video for that soon. I get average 7-8hrs for both note 9 and note 10+ both running latest software update

[Samsung_specialist]

Hi, 

Please bring the device to a certified Samsung Service Center to have the device checked out.