Apple added a new “iPhone Handoff” feature to iOS 27 that will allow you to switch between two iPhones while using the same phone number on each device.
This feature was briefly mentioned during the WWDC 2026 keynote in June, on a slide listing hundreds of new features coming in iOS 27 and corresponding software updates, but Apple never shared further details at the time.
Woozad Forum member pdfu shared a video today that demonstrates how the feature will work, using two simulated iPhones running in Xcode 27’s Device Hub.
“iPhone Handoff” can be configured from the Settings app, under the Cellular menu. During the setup process, you can choose which iPhone you want to be the primary device you use most often and which you want to be the companion device.
Apple says a user’s primary eSIM will remain on the primary iPhone, while the companion iPhone will receive a companion eSIM, allowing you to switch between devices while using the same phone number.
All cellular settings are managed on the primary iPhone and location sharing is based on which iPhone is actively using the phone number.
In addition to needing two iPhones running iOS 27, “iPhone Handoff” will apparently require carrier support. The forum post mentions that T-Mobile in the United States and Deutsche Telekom in Germany could be among the first carriers to offer this feature.
After three months of beta testing, iOS 27 is expected to be released later this month, so we’ll likely know more about this feature soon.
