I’m using an old “ZTE Falcon” hotspot, I got it from T-Mobile maybe 8 years ago, it’s 4G/LTE, still works fine, tried multiple SIM (it’s unlocked), in general I’m using it via WiFi because we connect multiple phones/tv/laptops on it while traveling in a RV. I tested it with a USB cable between my linux and the hotspot, and it appears in Linux as a “usb0” interface, got an IP address, and works fine, it disables WiFi IIRC when plugged by USB.
I’m using an old “ZTE Falcon” hotspot, I got it from T-Mobile maybe 8 years ago, it’s 4G/LTE, still works fine, tried multiple SIM (it’s unlocked), in general I’m using it via WiFi because we connect multiple phones/tv/laptops on it while traveling in a RV. I tested it with a USB cable between my linux and the hotspot, and it appears in Linux as a “usb0” interface, got an IP address, and works fine, it disables WiFi IIRC when plugged by USB.