Wait, it does? If I downloaded a show or whatever off Netflix and used Chromecast, what's the data being used? I've only ever used chromecast at home with WiFi and never considered this possibility.Using a chrome cast is working for me but for longer trips I'll probably use my micro USB or lightning to hdmi cords and one of my tablets and or phones as the device. A USB port would definitely have been nice. Downside with chrome cast is it uses data while streaming.