Sony Ericsson Xperia pro was officially announced in February 2011, Device released in October 2011 Sony Ericsson Xperia pro made under Xperia.Mobile Network Support and BandSony Ericsson Xperia pro have Mini-SIM Card Slots,Sony Ericsson Xperia pro support all GSM Based network providers. Sony Ericsson Xperia pro mobile device support 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900 and Hight Speed 3G Network Band at HSDPA 850,HSDPA 900,HSDPA 2100, (HSDPA 900 / 2100