A few days ago I went to the straight talk website and ran the imei numbers on my galaxy s4 and moto razr..they said both were compatible for straight talk. So I went to the store and bought two activation packs with the sim cards. The galaxy s4 worked just fine with my straight talk sim card but the razr didnt. Does anyone know how to fix this problem?? It has the option to switch to GSM and edit the APN but still doesnt work? Please any ideas would be great!! Thank you!