How do you improve upon something as good as 3G ? Simple, move on to 4G. Without any doubt,3G was the next best thing in mobile data communication after EDGE/GPRS. I mean with download speeds as high as 7mbps, 3G redefined the way we thought of mobile broadband connectivity. But everything that has a beginning has an end and 3g's short lived life eventually paved the way for 4g broadband.
As of now, 4G is the best mobile broadband solution available. If raw speed is what you seek, look no further. Supporting speeds as high as 100Mbps, it is undoubtedly fast, infact much faster than some of the currently available wired broadband solution. Just to give you an idea about how fast 100Mbps is and what this kind of speed is capable of, servers of various dedicated web hosting service providers have a port speed of 100Mbps. So, if you have a powerful mobile device having 4G connectivity, you can host your website straight off it or launch a mobile web hosting service.
Besides being high on raw speed, 4G is also high on feature count. HD streaming support, seamless global roaming, IPv6 - 4G seems to have it all. However 4G is not available everywhere, its still in deployment phase in various parts of the world and will soon be available everywhere, making 100Mbps point to point wireless communication across the globe a reality. So, there is no denying the fact that 4G is indeed the future of mobile broadband.