<!--
{
  "availability" : [
    "iOS: 12.5.0 - 27.0.0",
    "iPadOS: 12.5.0 - 27.0.0",
    "macCatalyst: 12.5.0 - 27.0.0"
  ],
  "documentType" : "symbol",
  "framework" : "ExposureNotification",
  "identifier" : "/documentation/ExposureNotification/ENCalibrationConfidence",
  "metadataVersion" : "0.1.0",
  "role" : "Enumeration",
  "symbol" : {
    "kind" : "Enumeration",
    "modules" : [
      "Exposure Notification"
    ],
    "preciseIdentifier" : "c:@E@ENCalibrationConfidence"
  },
  "title" : "ENCalibrationConfidence"
}
-->

# ENCalibrationConfidence

The transmitting device’s calibration confidence.

```
enum ENCalibrationConfidence
```

## Overview> Important:
> This property is available in iOS 12.5, and in iOS 13.7 and later.

## Topics

### Enumeration Cases

[`case high`](/documentation/ExposureNotification/ENCalibrationConfidence/high)

The highest confidence in the calibration data.

[`case medium`](/documentation/ExposureNotification/ENCalibrationConfidence/medium)

The medium confidence in the calibration data.

[`case low`](/documentation/ExposureNotification/ENCalibrationConfidence/low)

The average confidence in the calibration data.

[`case lowest`](/documentation/ExposureNotification/ENCalibrationConfidence/lowest)

No confidence in the calibration data.

### Initializers

[`init?(rawValue: UInt8)`](/documentation/ExposureNotification/ENCalibrationConfidence/init(rawValue:))

## Relationships

### Conforms To

[`Hashable`](/documentation/Swift/Hashable)

[`BitwiseCopyable`](/documentation/Swift/BitwiseCopyable)

[`Sendable`](/documentation/Swift/Sendable)

[`Equatable`](/documentation/Swift/Equatable)

[`RawRepresentable`](/documentation/Swift/RawRepresentable)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)