App is not showing in my iphone and Metro Bundler screen started

Hi I am learning react-native with expo-cli, just i created new project by using npx expo init test-app. Then cd test-app, npm start. i can able to see Starting Metro Bundler screen with my login account. if scan the QR code app is not displayed in my iphone… i tried uninstall/reinstall both expo-cli and npm and node but no luck. can u help me on that?

I am using windows 10 machine.