WireGuard with iOS

Download and install WireGuard from App Store

Log in this site.
Enter Config Generator
Click on your favorite option.
Click on "Generate".
Download or extract files.

Launch WireGuard. Click the + button, choose "Create from QR code", and choose a name
Alternatively, download .conf file and use "Create from file or archive".

When OS prompts a security warning, click "Allow" If requested, enter your iPhone passcode

Switch to activate