ZTE Nubia Z9 Mini Elite was officially announced in November 2015, Device released in November 2015Mobile Network Support and BandZTE Nubia Z9 Mini Elite have Dual Card Slots,ZTE Nubia Z9 Mini Elite support all GSM Based network providers. ZTE Nubia Z9 Mini Elite 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,ZTE Nubia Z9 Mini Elite also support LTE based 4G Networks