<!--
{
  "availability" : [
    "iOS: 13.0.0 -",
    "iPadOS: 13.0.0 -",
    "macCatalyst: 13.0.0 -",
    "macOS: 10.15.0 -",
    "tvOS: 13.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 6.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "Foundation",
  "identifier" : "/documentation/Foundation/URLError/NetworkUnavailableReason-swift.enum/cellular",
  "metadataVersion" : "0.1.0",
  "role" : "Case",
  "symbol" : {
    "kind" : "Case",
    "modules" : [
      "Foundation"
    ],
    "preciseIdentifier" : "s:10Foundation8URLErrorV24NetworkUnavailableReasonO8cellularyA2EmF"
  },
  "title" : "URLError.NetworkUnavailableReason.cellular"
}
-->

# URLError.NetworkUnavailableReason.cellular

A reason that indicates network is unavailable because the interface is cellular and cellular network is disabled.

```
case cellular
```

## Discussion

This reason occurs when cellular is the only available network interface, but the [`URLSessionConfiguration`](/documentation/Foundation/URLSessionConfiguration) property [`allowsCellularAccess`](/documentation/Foundation/URLSessionConfiguration/allowsCellularAccess) is <doc://com.apple.documentation/documentation/Swift/false>.

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)