# SENTUnknownEvent

Represents a duration of the time when the user's mobility state was unknown.

## SENTUnknownEvent API

{% hint style="info" %}
This class extends SENTTimelineEvent. See [SENTTimelineEvent](https://docs.sentiance.com/important-topics/sdk/api-reference/ios/event-timeline/senttimelineevent) for additional properties and methods.
{% endhint %}

### isEqual

```swift
func isEqual(to unknownEvent: SENTUnknownEvent) -> Bool
```