GL-MT300N-V2 Cell Phone to WAN

On GL-MT300N-V2, speculating using a lightning/USB-C/micro USB cable connected to a cell phone on one end to a RJ45 connected to the WAN on the router. Then connecting a RJ45 to the LAN on the router and RJ45 to the Apple Lightning to Ethernet Camera Adapter to connect to an iPad with no SIM card.

In a home network, the Apple Lightning to Ethernet Camera Adapter would be connected to an Ethernet port on a cable modem but this is not mobile and only works at home.

Wondering if the above connection utilizing the GL-MT300N-V2 would allow for a portable network solution for playing cell phone games.

I cannot understand how you want to connect.