It might just be leftover from the early days of the iPhone, where AT&T, the original carrier of the iPhone in the states, complained about network congestion a

It might just be leftover from the early days of the iPhone, where AT&T, the original carrier of the iPhone in the states, complained about network congestion and bandwidth issues in highly populated areas. I would think that AT&T may have asked Apple for some sort of limitation on non-essential services like this.