@michal I own a quite similar handheld, a Powkiddy RGB30, which is designed for retro game emulation. It runs Rocknix (former JELos), and the hardware is basically a cheap Chinese TV box, so not exactly open-source. As I understand, the MechaComet is rather intended to be used as a phone, with camera and SIM card option, which is quite a revolution. At least incase it is usable. I will definitely keep an eye on it, thanks for sharing!