"Phone" is Greek for "voice", so perhaps a different name would be in order.
But neither "mobile" nor "cell" says anything about voice in particular, so I would think they are suitable terms for "portable communication device connected to a cellular network" even when the device primarily deals with non-voice services.
But neither "mobile" nor "cell" says anything about voice in particular, so I would think they are suitable terms for "portable communication device connected to a cellular network" even when the device primarily deals with non-voice services.