I can’t figure out if there is a way. I only have a WiFi iPad.
Would having a LTE iPad fix this issue or not really?
You could always buy a small travel router GL.iNet GL-MT300N-V2 (Mango) Wireless Mini Portable VPN Travel Router, Mobile Hotspot in Pocket, WiFi Repeater Bridge, Range Extender, OpenVPN Client, 300Mbps High Performance, 128MB RAM - GL.iNet. Have the internet hotspot on the phone on & then configure router to connect to the hotspot (in bridging mode). Then have the passport & any other device ( tablet / laptop ) connect to the routers wifi and they will share the hotspot.