Bluetooth is the miniature wireless transmitter and receiver used as an interface to access LANs, PSTN, Mobile network and portable handheld devices. Bluetooth can communicate with the Bluetooth enabled devices through a short range network called ”Piconets”. When the Bluetooth enabled device enters the proximity of the piconet, it establishes connection with the Bluetooth. It is very useful for hands free communication in hand held devices. The technology of Bluetooth was named after Harald Blaatand Bluetooth II, the king of Denmark.
A Mobile phone is an electronic device used for mobile telecommunications over a cellular network of specialized base stations known as cell sites. A cell phone offers full Duplex Communication and transfer the link when the user moves from one cell to another. As the phone user moves from one cell area to another, the system automatically commands the Mobile phone and a cell site with a stronger signal, to switch on to a new frequency in order to keep the link.