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# isAbsoluteAltitudeAvailable()

Returns a Boolean value indicating whether the current device reports changes in the absolute altitude.

```
class func isAbsoluteAltitudeAvailable() -> Bool
```

## Discussion

Use this method to determine if altitude updates are available before calling the [`startAbsoluteAltitudeUpdates(to:withHandler:)`](/documentation/CoreMotion/CMAltimeter/startAbsoluteAltitudeUpdates(to:withHandler:)) method.

> Note:
> Absolute altitude is only available on iPhone 12 and later and Apple Watch 6 or SE and later.

---

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