iOS 15.6 Heating

hi there, I have an iPhone SE 2016, iPhone 8, iPhone SE 2020, I updated to iOS 15.6 and now my device is overheating and the battery is draining superfast, but my iPhone SE 2020 and my iPhone 8 are perfectly fine, that se is on 98% battery health, my iPhone 8 is on 78% battery health but works fine and my SE 2020 is 89% battery health and that also works fine, please reply back and I hope apple releases an iOS 15.7 update to fix all this for that phone, I shall await your replies X