Samsung Galaxy Note 4 N910a 32GB GSM Unlocked Smartphone Charcoal Black (Certified Refurbished) This Certified Refurbished product is tested and certified to look and work like new. The refurbishing process includes functionality testing, basic cleaning, inspection, and repackaging. The resulting product includes all relevant accessories, comes with a minimum 90-day warranty, and may arrive in a generic box. Only sellers who meet a high performance bar may offer Certified Refurbished products on Amazon.com 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. 5.7-inch Super AMOLED Capacitive Multi-Touchscreen w/ Protective Corning Gorilla Glass 3 Android v4.4.4 (KitKat), Quad-core 2.7 GHz Processor, Chipset: Krait 450, Adreno 420 Graphics 16 Megapixel Camera (3456 x 4608 pixels) w/ Optical Image Stabilization, Autofocus & LED Flash + Front-Facing 3.7 Megapixel Camera Internal Memory: 32GB, 3GB RAM + microSD Slot Expandable up to 64GB