Lenovo A858T 4G LTE  was officially announced in December 2014, Device released in December 2014Mobile Network Support and BandLenovo A858T 4G LTE  have Dual Card Slots,Lenovo A858T 4G LTE  support all GSM Based network providers. Lenovo A858T 4G LTE  mobile device support 2G Band Frequency at GSM 900,GSM 1800,GSM 1900 and Hight Speed 3G Network Band at HSDPA 900,HSDPA 2100,Lenovo A858T 4G LTE  also support LTE based 4G Networks Support at Frequency level