Samsung A71 draining battery fast overnight

[Savali]

I need help. I recently bought an A71 and I am getting weird battery drains at night. I normally put the phone on DnD mode just before I go to bed but somehow I am getting huge battery drains overnight.  Last night it was at 60% when I  went to bed but this morning it was empty, just after 7 hours of no use. I turn off Wifi before sleeping. However during the day am not seeing similar issue.  I have attached a screenshot of the battery drain weirdly indicating that there was no app running. 

 

[KentTumanda]

Try to turn off your phone before go to bed. If continue drains the battery, Contact the customer support or Go to Samsung Service Center for battery issue.

[Nabski]

Try going to a samsung service center. I haven't experience that drop in my A71 especially when the internet connection is off

[mfbaig]

Received new update 2 days back, my battery draining issue got worst. How you are managing?

[Garret]

my a71 battery ife **bleep**, it goes down 1% every 2mins