---
title: CTRadioAccessTechnologyDidChange
framework: foundation
role: symbol
role_heading: Type Property
path: foundation/nsnotification/name-swift.struct/ctradioaccesstechnologydidchange
---

# CTRadioAccessTechnologyDidChange

The name of the notification indicating that the radio access technology changed for one of the services.

## Declaration

```swift
static let CTRadioAccessTechnologyDidChange: NSNotification.Name
```

## Discussion

Discussion The notification’s object is an NSString that represents the service identifier of the service whose radio access technology has changed. Use this string as the key in serviceCurrentRadioAccessTechnology to get the value of the new radio access technology for the service.

## See Also

### Core Telephony

- [CTServiceRadioAccessTechnologyDidChange](foundation/nsnotification/name-swift.struct/ctserviceradioaccesstechnologydidchange.md)