# iPhone Handoff enables seamless number sharing between two phones iOS 27 feature allows switching between devices with a single number. - **Source:** [The Verge](https://www.theverge.com) - **Published:** 2026-09-05 - **Original article:** - **On Brifing:** https://brifing.si/s/ffddb210-08f5-4639-b8dc-9de9bfb780d0 ## New iOS 27 feature Apple is introducing iPhone Handoff in iOS 27, enabling users to share a single phone number between two devices. The feature was first hinted at during WWDC in June 2026 but lacked details. A demo in Xcode 27's Device Hub shows the setup process, allowing one iPhone to serve as the primary device and another as its companion. This innovation comes as Apple prepares to launch its foldable iPhone Ultra, offering users more flexibility in device usage. ## Practical applications Handoff solves a common dilemma for owners of premium devices who may not always want to carry their expensive phones. Users can temporarily switch to a secondary, more affordable device while maintaining the same number. This is particularly useful for situations where carrying a bulky or valuable phone might be inconvenient or risky. The feature acknowledges that many users keep older devices as backups. ## Carrier requirements The Handoff feature requires carrier support to function properly. Code references to T-Mobile US and Telekom.de suggest initial partnerships, but broader carrier compatibility remains uncertain. This limitation means the feature's availability may vary by region and service provider. Apple will need to negotiate with multiple carriers worldwide to ensure widespread adoption. ## Technical implementation Handoff operates through Apple's Device Hub in Xcode 27, indicating deep system-level integration. The setup process involves pairing two iPhones, designating one as primary and the other as secondary. This suggests the feature uses Apple's existing ecosystem infrastructure rather than relying solely on carrier technology. The seamless transition implies sophisticated backend synchronization. ## Market timing Apple's introduction of Handoff coincides with the anticipated launch of the foldable iPhone Ultra. The company likely recognizes that foldable devices, while innovative, might not be practical for all situations. This feature provides a solution for users who want cutting-edge technology but need everyday practicality. It's a strategic move to address potential usability concerns before they arise. ## User benefits Handoff offers several advantages: protecting expensive devices in risky situations, maintaining connectivity when a primary device needs charging, and extending the usefulness of older iPhones. The feature could also appeal to business users who need separate devices for work and personal use but want a single contact number. It represents Apple's continued focus on ecosystem integration. ## Potential limitations The feature's effectiveness will depend on carrier cooperation, which could limit its initial rollout. There may also be restrictions on which iPhone models can pair together or how frequently users can switch devices. Questions remain about how messaging and call continuity will work between devices. These details will likely emerge as the launch date approaches. ## Industry impact iPhone Handoff represents Apple's response to growing demand for device flexibility in an increasingly mobile world. By allowing number sharing between devices, Apple addresses a niche but growing need in smartphone usage. This innovation could pressure competitors to develop similar solutions and might influence future smartphone design philosophies regarding single-device dependence. ## Sources covering this story - https://www.theverge.com/tech/990868/iphone-handoff-ios-27 — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._