NIU Tek Q N108 Unlocked GSM Phone with Dual SIM - Black/Silver 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 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual Standby); microSD Slot up to 32GB Android 2.2 OS (Froyo); 450 MHz ARM9 CPU; WAP 2.0/xHTML, HTML; Java MIDP emulator Touchscreen; QWERTY Keyboard; Wi-Fi; Bluetooth; GPS with A-GPS support; 2MP w/ LED flash, Geo-tagging & smile detection SNS integration; MP3/MP4 Player; FM Radio/Recording; Google Search, Maps, Gmail, YouTube, Calendar, Google Talk, Picasa integration