quote: http://en.wikipedia.org/wiki/Tytn_ii Networks Quad band
GSM 850, 900, 1800, 1900 quote: http://en.wikipedia.org/wiki/Quad_band#2G * 850 MHz (U.S./Canada/Latin America/Brazil (Only the carrier Vivo in the south and south-east of Brazil)) * 900 MHz (Africa/Europe/Brazil/Australia/Asia (ex Japan and S. Korea)) * 1800 MHz (Africa/Europe/Brazil/Australia/Asia) * ...