How do I automatically install iOS 14?

Make sure the Automatic Updates feature is enabled

There are actually two different options for automatic updates in iOS 14, one for just downloading the update and one for installing the update. You’ll need to turn both turned on to download and install new updates overnight.

Why is my iOS 14 stuck on install now?

Remove the iOS 14 update file and redownload the software update: From your iPhone or iPad’s home screen, go to “Settings.” … Then “Software Update.” Click on “download and install,” and the software update should automatically start.