Sms System Related Literature

Chapter 2 REVIEW OF RELATED LITERATURE AND STUDIES This chapter contains the review of related literature and studies, conceptual model of the study and the operational definition of terms. Related Literature Many staff and students rely on mobile computing devices for work and personal uses. Laptop computers, Personal Digital Assistants (PDAs), USB memory (aka thumb drives), smart phones (mobile phones with advanced communication, storage and processing capabilities). They bring a lot of convenience and ease of use. SMS text messaging is the most widely used data application in the world, with 2.4 billion active users, or 74% of all mobile phone subscribers. (Wikipedia) Android’s 50% market has also been achieved and surpassed in USA, and also globally. One in 2 smart phones being sold today run Android. With about double Apple’s market share, and some would say that will be enough for Android, but I think it will continue to growth up to 70% globally and at least 60%-65% in USA. So Google and Apple together should be able to own about 90%-95% of the market in USA, and similarly on a global scale. The only difference would be that Apple will have only about 20% globally and Android will have about 70% as early as next year. In most markets there are only 2 main leaders that dominate the market, with the rest fighting over scraps. Whether Android will grow even more than that after 2012, it remains to be seen. (http://www.androidauthority.com)

Veit Jahns University of Duisburg-Essen, Germany The research field of mobile systems in urban systems becomes more complex and more varied. In such a situation, an analyzing look at the research work done so far can provide valuable insights. Hence, in this research a work in progress for a review of literature regarding the design, use and impact of mobile systems in urban systems will be presented. In this review a verbal approach will be used, which will be based on a