Does anyone here know, given current frequency allocations, what the theoretical maximum connection speed is? That is, allowing for improvements in hardware, how fast is really fast on a cell phone?
It's been way too long since my signals class, and I'm not even going to try since I know I'm going to be wrong (a whole lot of good that education did me, huh.). But I do know that it's proportional to the bandwidth available.
Careful reading of these [1] equations may yield you an answer. Flashbacks to college are an unintended side effect.