1. Check Android approval
Keep the phone unlocked and look for the USB debugging prompt. Disconnect and reconnect if the prompt was dismissed.
2. Check the cable
Some cables only charge. Use a data-capable cable and watch for a connection state change in the device list.
3. Check the device state
Make sure the device is not offline or unauthorized. Wait for the card to refresh before opening the cast view.
4. Record the details
When you join the community, include the device model, Android version, connection type and client version.