... 1800/1900 MHz. (work all over the world) In mobile phones, dual-band and tri-band refer to ... 850/900/1800/1900 MHz.GSM 900/1800 bands work in Europe, Africa, Asia, and BrazilHighlights: Android Smart Phone: ... , Switch easily between two SIM card/phone numbers in the same handset.Quad Band: This phone is ... you are, any time, This system features the latest in GPS technology so you never lose your way.The ...