苹果 iOS 27 新增"iPhone 接力"功能，两部手机可共用同一号码

苹果在 iOS 27 中推出了"iPhone 接力"功能，允许用户在两部 iPhone 上共享同一电话号码1。该功能通过主副 eSIM 配置方式实现1。

这项功能的具体运作方式为：主设备保留主 eSIM，辅助设备接收辅助 eSIM，所有蜂窝网络设置由主 iPhone 统一管理1。用户需要在"设置"应用的"蜂窝网络"菜单中进行配置1。该功能的启用需要两部设备均运行 iOS 27，并且需要获得运营商支持1。目前已有美国 T-Mobile 和德国 Deutsche Telekom 宣布支持该功能1。

Apple has incorporated a new "iPhone Relay" feature in iOS 27 that enables users to share a single telephone number across two iPhones with the ability to switch between them 1. The feature operates through a primary and secondary eSIM configuration system, with all cellular network settings managed by the primary iPhone 1.

The iPhone Relay functionality requires both devices to run iOS 27 and necessitates carrier support 1. The primary device retains the main eSIM while the secondary device receives an auxiliary eSIM 1. Configuration of iPhone Relay is accessible through the Cellular menu within the Settings application 1.

The feature details were first publicly disclosed on September 2, 2026, via MacRumors 1. Initial carrier support includes T-Mobile in the United States and Deutsche Telekom in Germany 1.