From your interesting bits, this might just as well be a Xiaomi Mi Mix, wich has been out for a while and is getting cloned already. No B/W sensor though (and e

From your interesting bits, this might just as well be a Xiaomi Mi Mix, wich has been out for a while and is getting cloned already. No B/W sensor though (and expansion pins, but I couldn't care less). It also has a ceramic body and does hold up really well in drop tests.