Celkon Diamond Ace was officially announced in November 2016, Device released in November 2016Mobile Network Support and BandCelkon Diamond Ace have Dual Card Slots,Celkon Diamond Ace support all GSM Based network providers. Celkon Diamond Ace mobile device support 2G Band Frequency at GSM 900,GSM 1800 and Hight Speed 3G Network Band at HSDPA 900,HSDPA 2100,Celkon Diamond Ace also support LTE based 4G Networks Support at Frequency level LTE 1800,LTE 850,LTE 2300, (With