Battery draining
iphone 8 and Apple Watch batteries draining very fast!
iPhone 8
Apple has this support document that might fix your problem: https://support.apple.com/en-us/HT211865
Do note that restoring your iPhone and Apple Watch can result is some missing data, such as missing Watch data from the time that WatchOS 7 / iOS 14 was installed until now. And maybe missing apps that are no longer in the App Store. Also if you are connected to your work, you may need to link it back up to your work servers. And Apply Pay and Face/Touch ID will need to be setup anew.