iOS 27 reportedly adds iPhone Handoff between two handsets sharing one number

One of today's more unusual ecosystem stories is a reported iOS 27 feature called iPhone Handoff that allows two iPhones to share the same phone number through a main-device and companion-device arrangement. The idea is to let users switch between handsets more seamlessly without maintaining entirely separate cellular identities. Such a feature could be useful for people who carry a smaller everyday iPhone alongside a larger photography or work device, or for users transitioning between older and newer hardware.

Apple already synchronizes messages, calls and data extensively across its ecosystem, but allowing two active iPhones to behave more explicitly as one cellular identity would push that continuity further. The practical details will determine its usefulness: carrier support, eSIM provisioning, emergency services and authentication all become more complicated when one number effectively belongs to multiple phones.

Until Apple's implementation and regional availability are fully detailed, this should be treated as an ecosystem feature to watch rather than a reason to restructure anyone's mobile setup immediately.