'Why won't my iPad screen rotate?': How to turn off the Orientation Lock on an iPad or troubleshoot its screen

If your iPad screen won't rotate, you might have to turn off the Orientation Lock or do some other troubleshooting.
Lifewire on MSN

iPad Frozen? Here’s Exactly How to Unfreeze It Fast

If your iPad is frozen to the point that you can't reboot it the normal way, perform a forced restart. Charge the battery.

How to lock your iPad with a passcode, fingerprint, or facial scan, and make it nearly impenetrable to strangers

Before you lock your iPad, you should set up a security method. Depending on your iPad model, this can include Touch ID or ...
CNET

Don't Tell Anyone, but Here's How to Lock and Hide Apps on Your iPhone

If you want to unhide or remove a lock from an app, long press on the app, tap Don't Require Face ID and enter your Face ID or passcode. Your locked apps will now be unlocked and your hidden apps will ...