How do I change my PIN code

This document outlines how to set, use, and change a passcode on your iPhone. -->Use a passcode with your iPhone, iPad, or iPod touch - Apple Support

Ongofulupouha8o1 Said:

"How do I change the PIN code on my IPhone?"

-------

Changing a PIN on an iPhone:

Do you mean the "Passcode"? If you officially mean a PIN, then contact the site or developer pertaining to it asking how to change it.