Samsung Focus S I937 16GB 4G HSPA+ Unlocked GSM Winsows 7.5 Smartphone w/ 8MP Camera - Black GSM 850 / 900 / 1800 / 1900, 3G Network: HSDPA 850 / 1900 / 2100, 4G: HSPA+ 850 / 1900 4.3" Super AMOLED Plus Capacitive Multi-Touchscreen Microsoft Windows Phone 7.5 Mango OS, 1.4 GHz Scorpion Processor 8 Megapixel Camera (3264 x 2448 pixels) w/ Autofocus, LED flash + Front-Facing 1.3 Megapixel Camera + Video 720p Internal Memory: 16GB, 512 MB RAM