How can I tell if my Phone is being hacked?

Those are scam attempts, and the software they are trying to get you to install will just take your money and do absolutely nothing. Do not interact and close them, your iPhone is not hacked.

Please review and stay vigilant: Recognize and avoid social engineering schemes including phishing messages, phony support calls, and other scams - Apple Support

Hello~ Don’t interact act with those messages…just scammers doing what scammers do do. Click on below…

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

~Katana-San~

It’s not. Ever.

Any such message is a scam.