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# CTCellularPlanStatusAuthorization.notSupported

A status that indicates the system can’t determine authorization.

```
case notSupported
```

## Discussion

The framework returns this status when both of the following criteria are met:

- The given phone number doesn’t match a cellular plan on the device.
- At least one active cellular plan has a phone number the system can’t confirm.

Unlike [`CTCellularPlanStatusAuthorization.notAuthorized`](/documentation/CoreTelephony/CTCellularPlanStatusAuthorization/notAuthorized), this status doesn’t indicate that the person denied authorization; it also doesn’t identify a permanent condition. Although the status might be permanent for the given phone number, your app can call [`requestAuthorization(forPhoneNumber:completion:)`](/documentation/CoreTelephony/CTCellularPlanStatus/requestAuthorization(forPhoneNumber:completion:)) again later to check, for example, if an underlying carrier-side condition changed.

---

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