Samsung Galaxy S3 I747 16GB 4G LTE Unlocked GSM Smartphone - Blue (Certified Refurbished) This Certified Refurbished product is tested and certified to look and work like new, with limited to no wear. The refurbishing process includes functionality testing, inspection, and repackaging. The product ships with all relevant accessories but does not include SIM card, and may arrive in a generic box. This Certified Refurbished product is backed by a minimum 90-day warranty. Only select sellers who maintain a high performance bar may offer Certified Refurbished products on Amazon. Internal Memory: 16GB storage, 2GB RAM + microSD Slot Expandable up to 64GB 8 Megapixel Camera (3264 x 2448 pixels) w/ Autofocus, LED Flash + Front-Facing 1.9 Megapixel Camera 4.8" Super AMOLED Capacitive Multi-Touchscreen w/ Protective Corning Gorilla Glass 2. AT&T Unlocked.