One Mobile Number, Two Phones: What Is iPhone Handoff and Which Carriers Support It?

iOS 27 introduced iPhone Handoff, which lets users use one phone number on two iPhones. So far only T-Mobile in the US ($5 per month surcharge) and Telekom in Germany have confirmed support.

• Both iPhones must run iOS 27 and be on the same Wi-Fi network
• One device is designated primary and holds the main eSIM
• T-Mobile in the US charges an extra $5 per month for the feature
• Apple Watch does not switch between devices, and some missed calls do not work