I put my Mobley in a Unite pro 781 over a year ago that I bought off amazon for about a hundred bucks. The Mobley died over a year ago and it’s in the bottom of a drawer. The unite pro or similar models are far superior to the little Mobley. I follow several wireless tech sites and know of no one who has been “ kicked off the plan” for not using the Mobley. As of now there is 0 danger of that.
While it’s still working replace it with a better modem and keep it just in case, but chances are that won’t happen. I would think moving the sim back and forth would be a hassle and unneeded. Once you have the better modem with antenna connection if needed and many more WiFi devices that can be connected , and a built in battery to take with you wherever you won’t go back.
