Thuraya SG-2520 is a breakthrough in satellite communication technology. As the world%u2019s smartest and lightest dual-mode satellite mobile phone (170g), Thuraya SG-2520 offers dynamic performance, inimitable style and innovative features surpassing all other available satellite-based products. Smart Phone Using cutting edge satellite technology, Thuraya SG-2520 is an advanced "smart phone" with 3-in-1 integrated technologies (satellite, GSM Tri-band and GPS) offering users an unparalleled combination of quality and performance. GSM Tri-band The satellite service option in Thuraya SG-2520 allows you to roam across nearly one third of the globe, from border to border; in urban areas and remote locations providing the advantages of easy mobility and seamless service beyond land-based telecommunication systems. This means that if you are in Thuraya%u2019s coverage area you can make and receive calls anywhere in the world. And when outside the coverage area, you can also use your phone within a GSM compatible network. Thuraya SG-2520 is the only satellite tri-band phone that provides connectivity on 900/1800/1900 MHz GSM networks offering greater flexibility in high traffic GSM environments with increased phone usability and voice quality in Asia, Africa, Australia, Europe and North America.