Very disappointing that The Age decided to use online a syndicated piece on 4G.
The article itself is right to flag the fact that 4G for the existing mobile customers doesn't really do much except relieve capacity constraints for operators - but in reality that does mean stuff should happen faster for users. The real issue though is whether the existing paradigm of the mobile - a swiss army knife device mostly used for voice and text with a bit of data thrown in - or PDA which is the above plus synced e-mail and calendar (the extra size knife) is really the future.
Where 4G comes into its own is in really doing dta, when you aren't doing data to the hand-held phone like device but really mobile computing.
Where it all gets interesting is what happens with voice. Skype has been offering a Skype App for the iPhone but only for use via the WiFi link. They are now offering to use the 3G data connection. That starts to beg the question - is there any use for the heritage 3G infrastructure? Messaging by Facebook chat, phoning by Skype.
Now that is a generational change. But there simply isn't the capacity on 3G networks for that.