Just woke up to find my iPhone SE wouldn't wake up. Plugging it into my iMac I discovered it's in recovery mode and it was suggested I reinstall iOS 13. Apparently this is a thing with beta releases as there is a webpage dedicated to fixing it https://www.tenorshare.com/ios-14/1-click-to-get-iphone-out-of-recovery-mode-in-ios-14.html. Anyway holding the power and home button for several seconds woke it up. No need to re-install iOS 😅