So far so good! Use Samsung Kies for latest firmware updates since OTA updates aren't official anymore.
Jason Cook, Amazon
24 March 2015
Summary: So far the sgh-t989 is working great. The phone came with gingerbread android installed but was able to update it to version 4.1.2 via Samsung Kies ver2 (free download from Samsung website). The radio, transceiver, bluetooth radio, wifi and cameras are all in good working order.