The word wide revolution in mobile is changing the people lives in term of the way they work, learn and interact. Mobile devices are fast becoming the most pervasive and ubiquitous technology ever invented. In this paper, the authors review architecture and functionality of mobile Generation technology and compare it with various existing generations of mobile wireless technology in terms of their portals, performance, advantages and disadvantages. First-Generation (1G) mobile phones had only voice facility. These were replaced by Second-Generation (2G) digital phones with added fax, data, and messaging services.