Explanation:
1. Open the wireless display function of the mobile phone (different types of mobile phones have different names), how to set: Setting - Connection & sharing - Wireless display;
2. Open the wireless screen projection function of the TV/box/projector, and the setting method: open the "my application" under the selected interface -- open the wireless screen projection -- open the Miracast function;
3. Click on the Mi TV/box/projector that searched by the mobile phone, and it can be used when connected.