HTC Snap S510 Windows Mobile, 2 MP Camera, QWERTY Keyboard, Wi-Fi, and MicroSD Slot-Unlocked Phone GSM and Verizon-No Warranty-Black This unlocked world cell phone is compatible with GSM carriers like AT&T and T-Mobile. Not all carrier features may be supported, and on CDMA carrier Verizon and TELUS Quad-Band Unlocked GSM cell phone compatible with 850 / 900 / 1800 / 1900 and 3G 900 / 2100 frequencies plus EDGE capabilities - CDMA Data / 1xEV-DO rev.A Powered by Windows Mobile 6.1 Standard operating system Full QWERTY keyboard, Wi-Fi networking (802.11b/g), 2.0 megapixel digital camera, A2DP, Bluetooth, MicroSD memory expansion, Bluetooth stereo music Up to 6 hours of talk time, up to 380 hours of standby time