---
title: "openSystemURL(_:)"
framework: watchkit
role: symbol
role_heading: Instance Method
path: "watchkit/wkapplication/opensystemurl(_:)"
---

# openSystemURL(_:)

Opens the specified system URL.

## Declaration

```swift
func openSystemURL(_ url: URL)
```

## Parameters

- `url`: A URL that supports the tel: or sms: scheme. For information about the format of these URL schemes, see https://developer.apple.com/library/archive/featuredarticles/iPhoneURLScheme_Reference/Introduction/Introduction.html#//apple_ref/doc/uid/TP40007899.

## Discussion

Discussion Use this method to initiate phone calls or send messages. The URL you open is sent to the appropriate system app for handling, at which point the user can choose whether to continue the operation.