Micromax iOne was officially announced in May 2019, Device released in May 2019Mobile Network Support and BandMicromax iOne have Dual Card Slots,Micromax iOne support all GSM Based network providers. Micromax iOne 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,Micromax iOne also support LTE based 4G Networks Support at Frequency level LTE 1800,LTE 850,LTE 2300,comes with network