The market has leapt forward at each stage with each new generation of technology. Without technological supports, it is impossible for the market to evolve as it has. Although it is arguable whether markets have driven technologies or vice versa, there is no doubt that there are mutual influences between technology and market. The 1G mobile communications technologies such as NMT and AMPS (Advanced Mobile Phone System) were based on analogy and cellular system, which was more sophisticated than the primitive technologies used before the 1G period. However, 1G technologies still had technical limits. The most distinctive difference between 1G and 2G was that 2G mobile communications technologies (e.g. GSM and IS-95) were digital, which increased capacity and quality and required lower battery power for handsets. 2G technologies provided services and products with lower prices for a vastly increased number of users. In contrast, 3G mobile communications technologies (e.g. WCDMA and CDMA2000) have focused on increasing bandwidth capacity to provide more advanced services, for example, Internet browsing.