For advanced users and developers, more technical "features" (like changing the WebView implementation) can be found in your phone's Developer Options under WebView Implementation .
Since WebView is a background system component, it doesn't have a standard app icon on your home screen. However, you can manage its features or settings through these methods: ke.android.webview-android
You can find the latest security patches and performance improvements on the Google Play Store. For advanced users and developers, more technical "features"