---
title: CellularDataRestrictionDidUpdateNotifier
framework: Core Telephony
role: symbol
role_heading: Type Alias
platforms: [iOS 4.0+, iPadOS 4.0+, Mac Catalyst 14.0+, macOS 10.10+]
path: coretelephony/cellulardatarestrictiondidupdatenotifier
---

# CellularDataRestrictionDidUpdateNotifier

A block to provide updates on the app’s cellular data restriction state.

## Declaration

```swift
typealias CellularDataRestrictionDidUpdateNotifier = (CTCellularDataRestrictedState) -> Void
```

## See Also

### Handling Policy Changes

- [cellularDataRestrictionDidUpdateNotifier](coretelephony/ctcellulardata/cellulardatarestrictiondidupdatenotifier.md)