Motorola Fire XT531 Unlocked GSM Phone with Android 2.3 OS, 5MP Camera, GPS, Wi-Fi, Bluetooth, FM Radio and microSD Slot - Black This unlocked cell phone is compatible with GSM carriers like AT&T and T-Mobile. Not all carrier features may be supported. It will not work with CDMA carriers like Verizon Wireless, Alltel and Sprint. GSM Quad Band GSM 850 / 900 / 1800 / 1900; 3G HSDPA 900 / 2100, HSDPA 850 / 2100 or HSDPA 850 / 1900 Android OS, v2.3.4 (Gingerbread); 5MP camera + secondary camera; TFT capacitive touchscreen - Moto Switch UI; Wi-Fi 802.11 b/g/n, Wi-Fi hotspot; Bluetooth v2.1 with A2DP, EDR; GPS with A-GPS support microSD card slot up to 32GB; microUSB v2.0; Stereo FM radio with RDS