Huawei U8800 Pro was officially announced in June 2011, Device released in June 2011Mobile Network Support and BandHuawei U8800 Pro have Mini-SIM Card Slots,Huawei U8800 Pro support all GSM Based network providers. Huawei U8800 Pro mobile device support 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900 and Hight Speed 3G Network Band at HSDPA 900,HSDPA 2100,comes with network handling support with Network settings and work offline with flight Mode.