To connect to your TV, open the Home app on your mobile device and select the Chromecast device you want to use. At the bottom of the screen you'll see a button labeled Cast my screen -- tap it. Then, tap Cast screen on the prompt that appears to begin casting whatever is on your phone or tablet onto your TV.

Miracast

1
Open the Settings menu. Every Android phone is a little different, and yours might have a simpler way of doing this. ...
2
Select Display. ...
3
Choose Cast Screen. ...
4
Choose your receiver. ...
5
Open the Settings menu. ...
6
Select System. ...
7
Ensure that you're in the Display menu. ...
8
Click "Connect to a wireless display."