Karbonn Quattro L55 HD was officially announced in July 2016, Device released in July 2016Mobile Network Support and BandKarbonn Quattro L55 HD have Dual Card Slots,Karbonn Quattro L55 HD support all GSM Based network providers. Karbonn Quattro L55 HD 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,Karbonn Quattro L55 HD also support LTE based 4G Networks Support at Frequency level