iPhone 11 showing virus notices and virus removal apps

Whoever is trying to trick you by making you think that they have access to the data on your phone is trying to scam you. They have no idea what is on your phone.

All they want to do is trick you into buying software to fix a problem that does not exist on your phone.

Delete the messages or notices and do the same for any that you might see in the future.

You don't have any viruses on your phone, it is a scam message designed to get you to purchase unnecessary software or phish for personal information.

Read more about it here -

Recognize and avoid social engineering schemes including phishing messages, phony support calls, and other scams - Apple Support

Where on your iPhone are you receiving these “virus notices”? Within an app, webpage, something else? Wherever they are coming from close that out. I can most assure you your iPhone doesn’t have viruses.

My understanding is that iOS is highly sandboxed. Most apps do not have privileges to modify files containing other apps.

This means that "viruses" cannot spread, and that "virus removal" apps could not remove any viruses infecting your phone, even if there were any. Paying for an app to "remove viruses from your phone" is like paying for snake oil. It might benefit the snake oil salesman, but I don't see how it benefits the customer that much.