Why doesn't it work?? There're no errors. My speaker is turned on and not muted I have tried to run the code below on the simulator ( iPhone 13 Pro ( iOS 16.4 & iOS 17.0)) Xcode V14.3.1 // ContentView.swift // HelloWorld // // Created by JerryNL on 2023/8/12. // import SwiftUI import AVFoundation struct ContentView: View { var body: some View { VStack { Button { let utterance = AVSpeechUtterance(string: "what") utterance.voice = AVSpeechSynthesisVoice(language: "en-US") let synthesizer = AVSpeechSynthesizer() synthesizer.speak(utterance) } label: { Text("Hello World") .fontWeight(.bold) .font(.system(.title, design: .rounded)) } .padding() .foregroundColor(.white) .background(Color.purple) .cornerRadius(20) } .padding() } } struct ContentView_Previews: PreviewProvider { static var previews: some View { ContentView() } }