Micromax A72 Canvas viva was officially announced in April 2013, Device released in April 2013Mobile Network Support and BandMicromax A72 Canvas viva have Dual, (Mini-SIM) Card Slots,Micromax A72 Canvas viva support all GSM Based network providers. Micromax A72 Canvas viva 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