Is there an untapped niche for a similarly-sized single board computer (not several computers, baseband processor, SIM card that runs code, etc. jammed into a hermetically sealed casing that is worthy of being in the Museum for Modern Art) that just does simple simpler, "boring", useless things like send and receive packets, read, write and store files, etc.
A pocket-sized computer that a user can not just rent but _pwn_, that does not make gratuitous network connections to some "mothership" and allow for easy monitoring and remote control by a third party, and that does not brick itself if it's casing is opened. A computer that can be, to the fullest extent possible via open source software, controlled entirely by the user.
Who knows maybe a person could turn such a small computer into "a device for sending and receiving text, images, sound and video over a network, such as the internet."
Nah, there would be no use for such a thing. Only a device _that can handle payments_ is worth using to send and receive text, images, audio and video.
What is the point of a device used to communicate, e.g., a "phone", if it cannot also be used to spend money?