---
title: SMSService.ViabilityNotification
framework: TelephonyMessagingKit
role: symbol
role_heading: Structure
platforms: [iOS 26.0+]
path: telephonymessagingkit/smsservice/viabilitynotification
---

# SMSService.ViabilityNotification

A notification that indicates whether SMS is viable for a given cellular service.

## Declaration

```swift
struct ViabilityNotification
```

## Topics

### Accessing notification properties

- [cellularServiceID](telephonymessagingkit/smsservice/viabilitynotification/cellularserviceid.md)
- [isViable](telephonymessagingkit/smsservice/viabilitynotification/isviable.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Determining service viabililty

- [isViable(for:)](telephonymessagingkit/smsservice/isviable(for:).md)
- [viabilityNotifications](telephonymessagingkit/smsservice/viabilitynotifications.md)