Microsoft Surface 2 LTE Tablet was officially announced in March 2014, Device released in March 2014Mobile Network Support and BandMicrosoft Surface 2 LTE Tablet have Micro-SIM Card Slots,Microsoft Surface 2 LTE Tablet support all GSM Based network providers. Microsoft Surface 2 LTE Tablet mobile device support 2G Band Frequency at GSM 900,GSM 1800 and Hight Speed 3G Network Band at HSDPA 2100,Microsoft Surface 2 LTE Tablet also support LTE based 4G Networks Support