How to activate VPN on iPhone 13 Pro

Unless a VPN is required by your school or employer, there is nothing to be gained by activating one. They don't work well with iPhone and iPhone is so secure on it's own, they are simply not needed. Instead of activating it, it would be better to remove the profile completely from your phone.

Read this --> VPN: What you need to know - Apple Community

Open the application for the VPN and connect.

Unless your company or school requires you to use a VPN, there is absolutely no reason to activate a VPN on your iPhone.

Despite what the fancy advertising might claim......a VPN provides less security for your iPhone.....something that the fancy advertising does not ever seem to mention.