Samsung Galaxy Ring was officially announced in June 2013, Device released in July 2013Mobile Network Support and BandSamsung Galaxy Ring have Yes Card Slots,Samsung Galaxy Ring support all GSM Based network providers. Samsung Galaxy Ring mobile device support 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900 and Hight Speed 3G Network Band at HSDPA 2100,comes with network handling support with Network settings and work offline with flight Mode.