I find that now more than ever before, there's a prominance of ISP/cell carriers promoting their 4G wireless network technology. Aside from it obviously meaning 4th generation and thus "faster" than the previous generation, what is the actual spec difference? I remember the upgrade form 2G to 3G - the difference seemed almost like night and day (or at the very least noticeable).
So i suppose my question is, how much of this 4G hype is marketing and how much is actually warranted?