Battery is draining drastically after IOS 13 update

Hi Apple,

Recently I have updated my iPhone 6s plus to ios 13.After the update my phone battery is getting drained very early.

Before the upgrade I used to charge my phone at once in a day.But now I have to charge my phone thrice in a day.

Even if I use whatsapp or music app the phone battery gets 20% right from the 100% in just 2 n half hour.

Guys i had updated my phone assuming that ios 13 have something new,something good but experience is terrible.Also the camera is not working when I make video call.I have to drop the call and again have to call the person.

The 13 is totally not recommendable update yet