Nokia 105 (2017) was officially announced in July 2017, Device released in July 2017Mobile Network Support and BandNokia 105 (2017) have Dual, (Mini Sim) (Optional Single Sim Mode) Card Slot,Nokia 105 (2017) support all GSM Based network providers. Nokia 105 (2017) 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