Steps to troubleshoot:

1. Verify your television is connected to the same network as the mobile device.
2. If necessary, connect to a different wifi network or switch to an ethernet cable connection.
3. Confirm your television’s software is up-to-date.
4. Restart your router and/or television if necessary.
5. Ensure settings are correctly configured on both the television and mobile device.
6. Try connecting using a different mobile device, or disconnecting other connected wifi devices or cables from your TV.