Today I update my iPhone 11 in 14.5.1 after that battery drain fast

For iPhone 11 models, read 'About recalibration of battery health reporting in iOS 14.5'. Click here --> https://support.apple.com/HT212247

I updated to 14.6 yesterday. Phone charged overnight to 100%. I checked the news and my mail briefly and then listened to a podcast for half an hour. When I picked up the phone it was red hot and the battery had drained to 75%. This is a massive issue!

I'm having the exact same issue and this has been going on for a couple of months now. I'm so annoyed.