[greglepore]

I would hope they distinguish by ip. With a phone or tablet and a direct cell connection its easier as the apps "talk back" to the carrier. I've never tried-can you stream video thru a browser these days on your phone or does it force you to use an app for the service? I just tried netflix thru safari and it directed me to the app. The carrier knows that data going to a netflix or prime app etc is streaming video content. I guess they could monitor the ip directed from a browser, but I wonder if in practice that occurs.