iPhone - Official Apple Support
Learn how to set up and use your iPhone. Find all the topics, resources, and contact options you need for iPhone.
Learn how to quickly share your contact information with another nearby iPhone using NameDrop.
Set up iPhone - Official Apple Support
Messages for iPhone, iPad, Apple Watch, and Mac - Official Apple Support
If your iPhone asks you to confirm your phone number when activating in the U.S. - Apple Support
If you're asked to confirm your Apple ID when you contact Apple - Apple Support
How to contact Apple support: All methods, explained
Set up iPhone - Official Apple Support
Contact - Official Apple Support
How to Generate an Apple Support PIN
Change the language on your iPhone or iPad - Apple Support