Prestigio MultiPhone 5503 Duo was officially announced in July 2014, Device released in July 2014Mobile Network Support and BandPrestigio MultiPhone 5503 Duo have Dual Card Slots,Prestigio MultiPhone 5503 Duo support all GSM Based network providers. Prestigio MultiPhone 5503 Duo 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