A cell phone works by connecting to cellular networks using radio waves. When making a call, the phone sends signals to the nearest cell tower, which then routes the call to its destination. Internet access is achieved through data connections.

Cell phones Originally only used for voice communication, today's mobile phones provide additional services such as e-mail, Internet browsing, PDA (Personal Digital Assistant) functionality, digital camera, SMS (Short Message Service) for text messaging, games, and the ability to watch video or listen to music.