Connect mobile smart device and smart tv?

Android smart mobile phones can connect to replace the smart TV. In order to watch entertainment and sports TV, smart devices need to install TV apps. Someone knows which apps watch free TV for smart mobile devices. Help me.

Assuming I got your question right, maybe start with the TeaTV app. It is not clear what you mean when you say ‘free TV’.

Something is not clear here. Connect to another TV or what?