Verykool RX2 Rock was officially announced in October 2014, Device released in October 2014Mobile Network Support and BandVerykool RX2 Rock have Dual Card Slots,Verykool RX2 Rock support all GSM Based network providers. Verykool RX2 Rock 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,Verykool RX2 Rock also support LTE based 4G Networks Support at Frequency level LTE 2600,LTE 850,