iOS 27 adds iPhone Handoff: one number across two iPhones

iOS 27 introduces iPhone Handoff, letting two iPhones share a single number with calls, iMessage, RCS, SMS and Find My location moving to the active device. Carrier support is limited to T-Mobile in the U.S. ($5/month) and Telekom in Germany (€6.95/month), with Verizon and EE promised by the end of 2026.

• Only one iPhone can use the number at a time, switching automatically
• T-Mobile charges $5/month, Telekom €6.95/month via MultiSIM
• Apple Watch does not move between iPhones and stays paired to one
• Requires two iPhones on iOS 27 and an eSIM from a supported carrier