Hmmmm - could this be my note 4 issue?

So had a note 4 since launch. After lollipop update my battery list 30/40% of its staying power AND my phone calls kept getting dropped or had no service where I previously had service.

I own a gear s and have it linked with Bluetooth 100% of the time....

So the last 2 days, I turned Bt off and wow. Battery life like old kit Kat and no dropped calls.

Hmmmmm