In Mobile computing there are many Issues and impact that we identify and investigate their technical significance in this research paper. In new research, problems include management of location dependent data, information services to mobile users, frequent disconnections, wireless data broadcasting, and energy efficient data access. The rapidly expanding technology of cellular communications, wireless LAN, and satellite services will make it possible for mobile users to access information anywhere and at anytime. In the near future, millions of users will be carrying a portable computer, often called a personal digital assistant or a personal communicator. These devices will be diskless; store data in clouds. These devices will be powerful laptop computers with large memories and powerful processors. Regardless of size, all mobile computers will be equipped with a wireless.