How do I update my iCloud after inserting a new SIM card ?
How do I update my iCloud with my old info after I insert a new SIM card?
iPhone 13 Pro Max, iOS 15
Question marked as
Top-ranking reply
iCloud+ has no relation to your SIM card whatsoever.
You upgrade your iCloud storage the same way you normally do. If using your number as a payment method for your Apple account, then if supported it will continue to be charged to it.
Link-> Upgrade to iCloud+ - Apple Support