Overview
- Apple added iPhone Handoff in iOS 27 to let one phone number move between two iPhones by activating the number on whichever device is unlocked.
- iOS 27, which shipped on September 14, enables the feature in software but the feature requires carrier support, eSIMs, the same Apple ID on both phones and Messages in iCloud enabled.
- T‑Mobile in the U.S. and Deutsche Telekom in Germany are the only launch carriers so far and are charging monthly fees for Handoff, with T‑Mobile at $5 per month and Deutsche Telekom at €6.95 for plans without multi‑SIM.
- AT&T has no firm plans to adopt Handoff and told reporters it will continue to focus on existing eSIM activation and transfer tools, while Apple says Verizon and EE are expected to add support later this year.
- Because carriers control eSIM handling and certain services stay tied to a designated main iPhone, users should expect uneven availability, different activation or cancellation rules, and possible extra charges depending on their provider.