There is no 2 variants of Infocus M810. There is only one model of Infocus M810 and only in one colour (front black and back side is gold). The same phone supports both GSM and CDMA (only 1 micro SIM slot in phone, the same SIM slot work for CDMA and GSM). The phone works as a GSM phone when GSM SIM is inserted and the same phone works as a CDMA phone when CDMA SIM is inserted. This same phone supports GSM 2G,3G & 4G and also CDMA 1x, EVDO Rev A & EVDO Rev B.