Apple iPhone 4S, GSM Unlocked, 8GB - Black (Refurbished) Professionally inspected and tested to work and look like new, and backed by the 90-day Amazon Renewed Guarantee. Box and relevant accessories (no headphones included) may be generic. GSM/GPRS/EDGE (850, 900, 1,800 1,900 MHz) Quad-band 3G UMTS/HSDPA/HSUPA (850, 900, 1,900, 2,100 MHz) Retina display 3.5-inch (diagonal) widescreen Multi-Touch display 960-by-640-pixel resolution at 326 ppi 8-megapixel rear camera; 0.3-megapizel VGA front camera Apple A5 chip 800 MHz dual-core, 512MB DDR2 RAM