My battery iphone 13 pro is draining like I've never seen. I had Norton 360 app on the phone. I deleted the app and installed the AT&T Active Armor app with has internet monitoring, VPN and other features similar to Norton. There is more than a remarkable difference when not using Norton. I bought Norton and would like to be able to use it on my phone but the battery doesn't last a day with it running. I'm thinking it's not an Apple release issue since it goes away when using a different application.