Sony Xperia Z C6616 Unlocked GSM 4G LTE WaterProof Smartphone w/13MP Camera - Black (Certified Refurbished) 2G: 850 / 900 / 1800 / 1900, 3G: HSDPA 850 / 900 / 2100, 4G: 2100 Android v4.1 Jelly Bean OS (upgradable), Quad-Core 1.5 GHz Krait Processor, Chipset: Qualcomm Snapdragon S4 Pro, Adreno 320 Graphics 13.1 Megapixel Camera (4128 x 3096 pixels) w/ Autofocus, LED Flash + Front-Facing 2.2 Megapixel Camera Internal Memory: 16GB, 2GB RAM + microSD Slot Expandable up to 64GB 5" TFT Display Multi-Touchscreen (up to 10 fingers!), Shatter Proof and Scratch-Resistant Glass