How do you fix a phone that’s been hacked or cloned

Perhaps should you change your account passwords, as those remain

an understated concept; to answer, or fix those detailed symptoms?

• Recognize and avoid phishing messages, phony support calls, and other scams - Apple Support

//support.apple.com/en-us/HT204759

• What is Phishing? | How to Protect Against Phishing Attacks | Malwarebytes

https://www.malwarebytes.com/phishing [ see iOS version ]

Check /change your account security notions, as form of protection

and upgrade any old simple passwords or pass-codes, as necessary.

That is very unlikely. Could you tell us about the symptoms that make you think that your phone has been hacked...