This article attempts to explain the differences between 1G 2G 3G and 4G Mobile Services, which are all different generations of mobile device protocols for transmitting data. Each of 1G 2G 3G 4G were developed sequentially and were built using more and more sophisticated technology to improve quality. In some cases, a new generation required significant infrastructure changes, which contribute to the increase in prices. The technology of circuit switching allowed for the first G's and the development of new generations has been relatively quickly thereafter. For example, packet switching improved call quality in 3G. This allowed for other services to be provided like streaming video, as seen in the "triple play service". The improved networks have contributed to the reduction in differences in availability of technology, a topic discussed in class.
Link to article
http://kevin-peter.hubpages.com/hub/3G-and-4G-Mobile-Services
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