Have Your Login Info Ready
Installing the iPadOS 13.3.1 update might prompt you to input your Apple ID/iCloud account details and your passcode.
Most of you should know these by heart, but if it's been awhile since you've had to login or if you're installing iPadOS 13.3.1 for someone else, you'll want to make sure you have that information available before you start the installation process.
There's also a chance you'll get logged out of some of your first and third-party apps and services. Have this login info handy as well.
If you want to quickly complete the iPadOS 13.3.1 installation process, make sure you have all of this info ready to go.