Smartphone with Linux, WiFi and VoIP Article translation in link below. http://www.celularis.com/wifi-dual-phones/e28-r2821-smartphone-con-linux-y-wifi-y-voip.php http://translate.google.com/translate?sourceid=mozclient&num=50&u=http%3A//www.celularis.com/wifi-dual-phones/e28-r2821-smartphone-con-linux-y-wifi-y-voip.php