Could this be used for LTE roaming? My parents live out in the middle of nowhere - no cell tower reception, but Starlink works so they have internet. I'd love to get them local LTE coverage for cell phone calls and text messages.
No wifi calling support? I had thought that was nearly universal?
Also, IIRC, LTE is mutually authenticated and your parents would not be able to attach to a private LTE network unless they have a SIM that's setup for it.