Smartphones represent a mobile device that combines the functions of a cellular phone with the ones of a Personal Digital Assistant (PDA). Smartphones enable all PDA functions such as office, memo pad, calendar, address book, office programs plus video files and mp3 files support. Just like in the case of a PDA, most Smartphones have built-in GPS receivers. However, if that is not the case, the GPS receiver can be connected to the Smartphone via Bluetooth or cable. Smartphones are endowed with different operating systems (mainly Windows Mobile and Symbian), which means that installation of compatible GPS software and maps is needed to enable the navigation function. Smartphones have more memory capacity than most standalone dedicated navigation units. They also have a built-in mobile phone and wireless networking capabilities, permitting this way the download of information without physically being connected to other devices. Smartphones offer the great opportunity of using POI details in order to communicate through email or telephone.
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GPS Devices 
