In this paper, an attempt has been made to review various existing generations of mobile wireless technology in terms of their portals, performance, advantages and disadvantages. 5G technology is the non-official name used to denote the next major phase of mobile telecommunications standards beyond the upcoming 4G standards. This 5th generation wireless system is something very extra-ordinary and its experience will be beyond the authors' imagination. It will provide wider range of facilities from the current 4th generation/IMT advance technology. It offers services in documentation supporting electronic transaction (e-payments and e-transactions) etc.