On Sunday, December 03, 2017 11:10:16 AM rhkra...@gmail.com wrote: > BTW, if a device has WiFi access it can > "interact" with cell phone users (by text or voice).
See, for example, FreedomPop. Google voice and, hmm, what's the new name-- hangups, hangouts, something like that, is another alternative. If your objective is to prevent people from using the device as a voice telephone or texting device, you almost have to disable Ethernet (and perhaps USB as there are Internet over USB converters). What is the objective with respect to it not being a smartphone?