iphone registration
How do I register my new iPhone?
How do I purchase extended warranty?
iPhone 11, iOS 14
Question marked as
An iPhone purchased from an authorized vendor should be registered with Apple automatically, within a day or so of purchase.
To check, see the info at the following link > Find information about your warranty or AppleCare plan - Apple Support
For AppleCare+ for iPhone, see the general info and purchasing info at the following link > AppleCare Products - iPhone - Apple