On sale Oct 2026 — Apple's first foldable, eSIM-only worldwide
Yes — eSIM-only worldwide. iPhone Duo has no SIM tray and runs on eSIMs only (2 active). China model (A3721) supports carrier eSIM activation via China Mobile/Unicom/Telecom (in-store).
By regional variant
Variant
eSIM support
Global (A3720)
Dual eSIM only, no SIM tray
Mainland China (A3721)
Dual eSIM only; carrier eSIM activation supported (in-store with ID)
Notes
No physical SIM fallback: install and test your travel eSIM before departure — fixing it after landing is painful.
China models cannot install non-China carrier eSIMs while in mainland China.
Stores 8+ eSIM profiles, max 2 active at a time.
FAQs
Does iPhone Duo take a physical SIM?
No. No version has a SIM tray — eSIM only.
Can the China iPhone Duo use carrier eSIMs?
Yes. China Mobile fully supports eSIM activation on the China iPhone Duo — bring your ID to a carrier store, usually done in minutes.
How do I prepare eSIMs for travel with iPhone Duo?
Buy your travel eSIM before departure, install on stable Wi-Fi and set it as the data line; on China models, install foreign eSIMs only after leaving mainland China.