The hard reality is that there is no PAYING market for such a device, because when it comes to the point-of-sale, most people still choose the normal-size device with better screen/battery/camera. This is equivalent to something I called the "QWERTY paradox" more than a decade ago: Back when the Smartphone market exploded, people disliked typing on a touchscreen and repeatedly stated that they want a device with a ph…
Show me the tiny Android flagship from the past 5 years that didn't sell well. (You can't, because there wasn't one.)