Celkon C44 Duos was officially announced in April 2014, Device released in April 2014Mobile Network Support and BandCelkon C44 Duos have Dual Card Slots,Celkon C44 Duos support all GSM Based network providers. Celkon C44 Duos mobile device support 2G Band Frequency at GSM 900,GSM 1800 and there is no 3G Network Band Support,comes with network handling support with Network settings and work offline with flight Mode. Device Body Design and Display Celkon