<!--
{
  "availability" : [
    "iOS: 27.0.0 -",
    "iPadOS: 27.0.0 -",
    "macCatalyst: 27.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "WiFiAware",
  "identifier" : "/documentation/WiFiAware/WAPerformanceForecast/signalStrength",
  "metadataVersion" : "0.1.0",
  "role" : "Instance Property",
  "symbol" : {
    "kind" : "Instance Property",
    "modules" : [
      "Wi-Fi Aware"
    ],
    "preciseIdentifier" : "s:9WiFiAware21WAPerformanceForecastV14signalStrengthSdSgvp"
  },
  "title" : "signalStrength"
}
-->

# signalStrength

The estimated signal strength of the remote device.

```
let signalStrength: Double?
```

## Discussion

The resulting value can be between `0.0` (weakest) and `1.0` (strongest), or it can be `nil` if the system can’t measure the value.

---

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)