Phone can be cast to older TVs with three methods:
1. TV box. Connect the TV box to the TV and then you can cast your phone screen;
2. App screencasting. Download a screencasting app on the old TV, and connect the mobile phone to the TV to cast the screen;
3. Mirror the screen. Turn on the TV and mobile phone screen mirroring function and search the nearby devices on the mobile phone to establish a connection, then you can mirror your phone to the TV.
