Sony Xperia TL LT30at 16GB 4G LTE Unlocked GSM Android Smartphone - Black 2G: GSM 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 1900 / 2100 4G: LTE 700 MHz Class 4 / 17 4.55" TFT Display Capacitive Multi-Touchscreen, up to 4 fingers, Shatter proof and scratch-resistant glass Android v4.1.2 (JellyBean) OS, Dual-Core 1.5 GHz Krait Processor, Chipset: Qualcomm MSM896 Snapdragon, Adreno 225 Graphics 13 Megapixel Camera (4128 x 3096 pixels) w/ Autofocus, LED flash + Front-Facing 1.3 Megapixel Camera, 720p@30fps + Video Internal Memory: 16GB, 1GB RAM + microSD Slot Expandable up to 32GB 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, and select prepaid carriers). Unlocked cell phones will not work with CDMA Carriers like Sprint, Verizon, Boost or Virgin.