Mobile technology allows us to communicate and do business from anywhere, at any time. It has also helped to make our work lives more efficient and productive. Mobile devices can help businesses improve collaboration among team members, streamline and speed up processes, and increase customer service. The mobile technology field is constantly evolving, with new applications and features becoming available to users all the time.
A cell phone is a mobile communication device that uses wireless networking to connect to the Internet and other information systems. It consists of a mobile transmitter and receiver, a battery, an input mechanism (a keypad for feature phones or a touch screen for smartphones), and a display. Modern mobile phones can support many Internet services, including Web browsing, gaming, instant messaging, and GPS navigation. Some feature phones are designed to be small enough to fit in a pocket, while others are larger and resemble personal digital assistants or portable media players.
Most cell phones use the GSM network for wireless communication. This second-generation digital cellular network began operations in 1991. It used a frequency-shift keying scheme to transmit data between the tower and the phone. It introduced text messaging in addition to voice calls, and later it added mobile internet with a theoretical maximum data transfer rate of 384 kbit/s.
Currently, most cell phones have customizable operating systems that allow the user to download apps (applications) for games, utilities, and other functions. These apps run on a central processing unit that is similar to those found in computers but optimised for low power environments.