Gigabyte GSmart Essence was officially announced in July 2015, Device released in September 2015Mobile Network Support and BandGigabyte GSmart Essence have Dual, (Mini Sim + Micro Sim) Card Slots,Gigabyte GSmart Essence support all GSM Based network providers. Gigabyte GSmart Essence 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,comes with network handling support with Network