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# supportsContentExtensions

A Boolean value that indicates whether the device supports notification content extensions.

```
var supportsContentExtensions: Bool { get }
```

## Discussion

Notification content extensions let you customize the appearance of the alerts displayed for your app’s notifications. The value of this property is <doc://com.apple.documentation/documentation/Swift/true> for devices that support notification content extensions and <doc://com.apple.documentation/documentation/Swift/false> for devices that do not support them. For information about how to implement a notification content extension, see <doc://com.apple.documentation/documentation/UserNotificationsUI/customizing-the-appearance-of-notifications>.

---

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