Lenovo A6000 4G LTE was officially announced in January 2015, Device released in January 2015Mobile Network Support and BandLenovo A6000 4G LTE have Dual Micro SIM Card Slots,Lenovo A6000 4G LTE support all GSM Based network providers. Lenovo A6000 4G LTE 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,Lenovo A6000 4G LTE also support LTE based 4G Networks Support at Frequency level