In general, most mobile carriers still have metered data connections, reducing the maximum video quality slightly when streaming over a mobile network allows the SlingPlayer to be bandwidth-friendly, without compromising video quality.
Hope this helps!!!
Sling Media Moderation Team
Thanks for your reply.
But that is not what is going on unfortunately. To me it seems to be the SlingPlayer App that is controlling this behaviour not the mobile carrier.
When I am connected to mobile broadband directly on the iPad then it is restricted to 640x240.
However, if I remove the SIM card from the iPad, put it into a mobile broadband router, connect the iPad via WiFi to the router, so the app sees it as a WiFi connection, then it allows 640x480.
It is the exact same SIM card and the exact same mobile broadband provider.
The same goes if I put the SIM card in my iPhone, create a hotspot and connect the iPad to that hotspot via WiFi. Presto 640x480!, even though I might stream with lower bandwidth, than when the iPad is using mobile broadband directly.
Why is that?