StraightTalk phones are usually either CDMA or GSM . I ' m not sure if the ST variant of the Galaxy S 6 has both radios or not , I wouldn ' t think so since it ' s a slimmed down version . The easiest way to tell which network the ST phone runs on is by looking at the box for it . If it has a little red map of the USA on it , then it ' s a CDMA phonecontentuploads 201501 straighttalkiphone . jpgIf it has a little blue map of the USA , it ' s a GSM phonecontentuploads 201305 nexusae 0 gsiiist . jpg <| sep |> Ooof . Mata feeling it . <| sep |> My friends did the same when I declined going out last night to party in lieu of waking up at 5 am to lift before work . Normies don ' t get it . <| sep |> Just added you . Let me know when you ' re here and I ' ll send you an infected mon