Other people have suggested it's done by limiting the size of the data transmitted to make the connection only useful to text messages, possibly resetting the c

Other people have suggested it's done by limiting the size of the data transmitted to make the connection only useful to text messages, possibly resetting the connection regularly. If so, it would in fact comply with both the principles of net neutrality and any laws I know of. You could create matsemann's text service as long as it also used small amounts of data it guessed could only be used for text.