AVAILABLE SIM in settings/About
What is “AVAILABLE SIM”?
Location: Settings/ General/ About
Near the bottom of the page where “Certificate Trust Settings” is displayed, you’ll see or not see “AVAILABLE SIM” and notice the code listed for the IMEI”2” is similar to the code used in “PHYSICAL SIM” IMEI.
What is that for and how does it work with the phone?
iPhone XR, iOS 16