Its a CDMA phone but is unlockable because have GSM bands this r the procedures
Tested in XT1548 US CELLULAR
*** is not my solution i just read a lot about the theme***
1. Unlock the bootloader using the motorola unlock page
2. Flash TWRP I Used twrp-osprey-2.8.7-test1
3. Download Turbo ROM from XDA credits goes to the Depelovers Yoshi_Guy and the rest of the team
3. Boot into Recovery , Wipe System, Data, Cache and Dalvik Cache ,Flash the ROM and GApps
4. Done after this u will have avaliable the GSM options |