Is this possible for iOS?
I don’t think so, as being connected to the same WiFi network is one of the requirement for iOS Screen Mirroring.
You could however try to set up a hotspot on the iPhone and then have the PPM join that network (with internet access), or set up a hotspot on the PPM for WiFi direct.
Hi @Scott_D it is possible:
However I echo @PhilipsIvo – setting up hotspot from your phone is better so that you can also play online content via your mobile internet.
On the other hand, if you mean a wired screen mirror feature, you can do that using a Lightning-to-HDMI adapter and an HDMI cable. Or if you have iPad Pro or a Macbook you can use USB Type-C cable.