Screen Mirroring on iPhone, you only need to do the following steps, so that you can easily screen cast the photos, videos or whatever you like to TV.
BiJie Meeting Box: No need to install App on iPhone(Make sure that the BiJie Meeting Box is connected to the same LAN with the iPhone)
First: open the control center
Second: tap screen mirroring, choose the name of meeting box, tap to start screen casting
Third: open control center again, tap screen mirroring, tap stop mirroring to stop screen casting.
More details: How to use Airplay on iPhone.