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 ...
To add widgets on an iPhone, tap and hold any part of the screen until everything starts to wiggle, then use the plus sign to ...
Your iPhone apps should update automatically, but if they aren't, you can check for updates manually through the App Store.
I walk through how I change and customize app icons on my iPhone. I start with the built-in options like changing icon size, ...