The main difference is that US iPhone 17 Pro Max models are eSIM-only, while global models typically retain a physical SIM card slot. Other key differences are primarily related to regional cellular bands and potential feature restrictions, such as FaceTime Audio being disabled in some countries. Other differences between the U.S. and global versions of the iPhone 17 Pro Max are related to connectivity features, which can affect battery life, and other regional market variations. Other hardware like the camera system, display, and processor are identical across models. Model number A3257: United States, Puerto Rico: The iPhone 17 Pro Max is eSIM-only with no physical SIM tray. Model number A3525: Bahrain, Canada, Guam, Japan, Kuwait, Mexico, Oman, Qatar, Saudi Arabia, United Arab Emirates, and U.S. Virgin Islands. Model number A3527: China mainland Yes, the iPhone 17 Pro Max sold in mainland China does have a physical SIM tray, but it will hold two nano-SIM cards and does n...