Cell Phone , 5.5" Android Smartphone with 4gb Micro Sd Card, Wifi 3g Unlocked for ATT Tmobile GSM Worldwide Unlocked cell phones are compatible with GSM carriers like AT&T and T-Mobile as well as with GSM SIM cards (e.g. H20, Straight Talk, Pure Talk USA and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin Come with 4GB Micro Sd card , Build in APP play store allow you to down load thousands of apps 5.5 HD Display takes your viewing experience to another level High speed CPU, 3G , GPS , WIFI , Bluetooth Additional Features: Google Play Store, Smart wake, Proximity Sensing, Gesture Sensing, Bluetooth, GPS Navigation, MP4, MP3, FM Radio, Sound Recorder, Video Player, 3G, Gravity Sensing, Torch Light, Wi-Fi, Maps, Gmail, Movie Studio, etc