Celkon Charm Colors was officially announced in September 2014, Device released in September 2014Mobile Network Support and BandCelkon Charm Colors have Dual Card Slots,Celkon Charm Colors support all GSM Based network providers. Celkon Charm Colors mobile device support 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900 and there is no 3G Network Band Support,comes with network handling support with Network settings and work offline with flight Mode.