Sonim XP7 was officially announced in November 2014, Device released in November 2014Mobile Network Support and BandSonim XP7 have Yes Card Slots,Sonim XP7 support all GSM Based network providers. Sonim XP7 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,Sonim XP7 also support LTE based 4G Networks Support at Frequency level LTE 700,LTE 2100,LTE 2600,LTE 850,LTE