Nokia 230 Dual was officially announced in November 2015, Device released in December 2015Mobile Network Support and BandNokia 230 Dual have Dual, (Mini Sim) Card Slots,Nokia 230 Dual support all GSM Based network providers. Nokia 230 Dual 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