Battery drain in few hours without using it

[Mangkudun Sati]

I left my Galaxy Note 4 charged at 100% last night
When I woke up in the morning battery was 0% and phone off
What could be draining my battery like this?battery is new from 1 month original one
Best regards and thanks
Alex

 

[swharshbar]

Could be a rouge app or a bad battery. Look at the battery stats and see what's hogging the battery usage.

 

[IAmSixNine]

Theres a wifi bug that has been draining battery rather quickly on the Note 4 and S7 edge.
i lost 15% battery in about 45 minutes after lunch one day because of it.
http://forums.androidcentral.com/samsung-galaxy-s7-edge/744627-phone-gets-hot-lags.html#post5558213
Post 4 was my issue and post 6 fixes it.

 

[amyliz99]

The last 2 updates makes my phones battery use up too soon fast. I put my new battery in thinking it needed it and nope. What is up with this. If this doesn't change I'm not renewing with Samsung again.