Karbonn A50S was officially announced in June 2014, Device released in June 2014 Karbonn A50S made under A Series.Mobile Network Support and BandKarbonn A50S have Dual, (Mini SIM + Micro SIM) Card Slots,Karbonn A50S support all GSM Based network providers. Karbonn A50S 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.