Huawei IDEOS S7 Slim was officially announced in February 2011, Device released in April 2011Mobile Network Support and BandHuawei IDEOS S7 Slim have Mini-SIM Card Slots,Huawei IDEOS S7 Slim support all GSM Based network providers. Huawei IDEOS S7 Slim mobile device support 2G Band Frequency at 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.