Samsung Galaxy J3 Star SM-J337 was officially announced in June 2018 , Device released in June 2018 Samsung Galaxy J3 Star SM-J337 made under Galaxy Series.Mobile Network Support and BandSamsung Galaxy J3 Star SM-J337 have Dual Card Slots, Samsung Galaxy J3 Star SM-J337 support all GSM Based network providers. Samsung Galaxy J3 Star SM-J337 mobile device support 2G Band Frequency at GSM 850,GSM 900,GSM 1800,GSM 1900 and Hight Speed 3G