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# ServicePredictionProvider

A class that provices cellular service predictions about upcoming events and anomalies.

```
final class ServicePredictionProvider
```

## Overview

To receive predictions about changing cellular conditions, start by initializing and retaining an instance of this class.
Next, iterate over the [`servicePredictions`](/documentation/WirelessInsights/ServicePredictionProvider/servicePredictions) asynchronous sequence with a `for`-`await`-`in` loop.

Each time your loop receives updated [`ServicePrediction`](/documentation/WirelessInsights/ServicePrediction) instances, you can inspect their [`predictedStartTime`](/documentation/WirelessInsights/ServicePrediction/predictedStartTime), [`predictedInterval`](/documentation/WirelessInsights/ServicePrediction/predictedInterval), and [`impact`](/documentation/WirelessInsights/ServicePrediction/impact-swift.property) properties to determine if your app needs to take action in advance of a potentially disruptive event.

While processing predictions from the [`servicePredictions`](/documentation/WirelessInsights/ServicePredictionProvider/servicePredictions) sequence, gracefully handle any errors that it throws.
The [`ServicePredictionError.unsupportedDevice`](/documentation/WirelessInsights/ServicePredictionError/unsupportedDevice) error indicates that WirelessInsights won’t provide any predictions on this device.
However, other errors indicate recoverable failures, such as [`ServicePredictionError.connectionError`](/documentation/WirelessInsights/ServicePredictionError/connectionError).

The following example shows a class that creates a
<doc://com.apple.documentation/documentation/Swift/Task> to receive service predictions
and call a private helper method when it receives a sufficiently important prediction.

```swift
class PredictionHandler {

   private let servicePredictionProvider = ServicePredictionProvider()
   private let predictionHandlerTask: Task<Void, Never>

   init() {
       predictionHandlerTask = Task {
           do {
               for try await predictions in servicePredictionProvider.servicePredictions {
                   // Take action if any prediction in the current set
                   // has a sufficiently high impact and duration,
                   // with medium or higher confidence.
                   for prediction in predictions {
                       if prediction.confidenceScore.prediction == .high &&
                           prediction.impact >= .medium &&
                           prediction.predictedInterval > QuantizedInterval.short {
                           self.prepareForDisruptiveWirelessEvent()
                       }
                   }
               }
           } catch {
               handlePredictionsError(error)
           }
       }
   }

   private func prepareForDisruptiveWirelessEvent() {
       // Prepare for possible degradation of wireless connectivity
       // by caching more data now, temporarily increasing
       // retry count, or delaying network requests.
   }

   private func handlePredictionsError(_ error: Error) {
       // If error is .connectionError, consider waiting and then retrying
       // the loop over servicePredictions.
       // For other errors, such as .unsupportedDevice, don't expect the
       // ServicePredictionProvider to produce any predictions.
   }
}
```

## Topics

### Creating a service prediction provider

[`init()`](/documentation/WirelessInsights/ServicePredictionProvider/init())

Creates a service prediction provider.

### Receiving service predictions

[`var servicePredictions: any AsyncSequence<[ServicePrediction], any Error>`](/documentation/WirelessInsights/ServicePredictionProvider/servicePredictions)

An asychronous sequence of current predictions.

[`struct ServicePrediction`](/documentation/WirelessInsights/ServicePrediction)

An individual prediction of anticipated cellular network availability.

[`enum ServicePredictionError`](/documentation/WirelessInsights/ServicePredictionError)

A type that represents errors encountered while using the WirelessInsights framework.

### Hashing

### Comparing providers


---

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