HDMI portIt is not possible from your mobile to TV. Both your phone and TV lacks HDMI port. You can connect phone to TV or computer to TV only if you have HDMI port in your TV.
If you have HDMI port, you can connect from your phone to TV using HDMI cable.
Wifi and ChromecastIf you have wifi internet connection in your home, then you can use Chromecast to play videos and picture in your TV. Again to connect Chromecast you need to have HDMI port in your TV. It is not required to have HDMI port in your phone if you have Chromecast but you need internet connection.