<!--
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    "iOS: 14.0.0 -",
    "iPadOS: 14.0.0 -"
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  "identifier" : "/documentation/ARKit/ARGeoTrackingConfiguration/checkAvailability(completionHandler:)",
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  "title" : "checkAvailability(completionHandler:)"
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# checkAvailability(completionHandler:)

Determines if geotracking supports the user’s current location.

```
class func checkAvailability(completionHandler: @escaping (Bool, (any Error)?) -> Void)
```

## Parameters

`completionHandler`

Code you supply that runs after the function returns. The closure takes a Boolean argument that indicates whether geotracking is available.

## Discussion

This function returns <doc://com.apple.documentation/documentation/Swift/false> under the following circumstances:

- ARKit lacks localization imagery for the user’s geographic position.
- A network connection is unavailable to download localization imagery.
- The device lacks cellular (GPS) capability.

To determine availability at a different location than the device’s current location, call [`checkAvailability(at:completionHandler:)`](/documentation/ARKit/ARGeoTrackingConfiguration/checkAvailability(at:completionHandler:)) instead.

For a list of supported areas and cities, see [`ARGeoTrackingConfiguration`](/documentation/ARKit/ARGeoTrackingConfiguration).

---

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