The article says "Put it in your backpack" but does not say if the device is battery-powered or if it requires access to AC mains power (wall socket).
Also, we see that SpaceX is developing a "direct to cell phone" service as they keep launching these experimental "direct to cell" satellites. We don't know the price of bandwidth of this direct-to-cell service but if it works, it would quickly make this mini-terminal obsolete.
I do a lot of hiking and backpacking in areas where there is no cell service. I would be nice to have direct-to-cell service even if it only allowed one text message per hour. A full Internet connection in such a location would be pointless because if there is not service, there is also no way to charge the phone, so I usually only have the phone turned on a few minutes a day.