Approach 4G Cautiously

Approach 4G Cautiously: "Wireless developers investing heavily in 4G must recall that companies supporting 3G invested billions in license fees, and have so far not made any profit. 3G is yet to become mainstream. There seems to be a divide between 3G equipment offered and the services available, thereby preventing consumers from making full use of 3G, and frustrating them. There does not seem to be any killer application pushing customers from 2/2.5G to 3G. "