My phone detected virus, how can I remove the virus

Hey there ,

Your phone has no virus. Follow these steps in the following link to remove it >>>Delete spam calendars and events on iPhone - Apple Support

That's a tech support scam, your phone does not have a virus, delete that calendar profile.

Doesn't use AV on the iPhone, you don't need that, AV slows down the iPhone.

FYI: Especially if the app is Free -> Data associated with you.

The following information may be collected and linked to your identity: Identification method.

Free app(s) is not really Free, the developer has to get his money from somewhere.