Asus Fonepad 7 Dual Sim was officially announced in February 2014, Device released in April 2014Mobile Network Support and BandAsus Fonepad 7 Dual Sim have Dual Micro SIM Card Slots,Asus Fonepad 7 Dual Sim support all GSM Based network providers. Asus Fonepad 7 Dual Sim 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 1900,HSDPA 2100,there is no flight mode support.