To prevent users from maliciously redirecting phone calls or changing the behavior of a phone or account, the Phone app supports most, but not all, of the special characters in the tel scheme.
The following examples show the strings formatted for Safari and for a native app: You can specify phone links explicitly in both web and native iOS apps using the tel URL scheme. This scenario works when FaceTime is configured to dial phone numbers (the default configuration) and the iOS device is connected to the same iCloud account as the Mac.
(When this scenario occurs in versions of iOS prior to 10.3, iOS initiates dialing without further prompting the user and does not display an alert, although a native app can be configured to display its own alert.)įaceTime in macOS 10.10 and later can also use the tel URL scheme to launch the Phone app on an iOS device by using Handoff. When a user opens a URL with the tel scheme in a native app, iOS 10.3 and later displays an alert and requires user confirmation before dialing. When a user taps a telephone link in a webpage, iOS displays an alert asking if the user really wants to dial the phone number and initiates dialing if the user accepts. The tel URL scheme is used to launch the Phone app on iOS devices and initiate dialing of the specified phone number.
