Apple iPhone 4S, GSM Unlocked, 16GB - 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 Unlocked compatible ONLY with GSM carriers like ATT and TMobile as well as other GSM networks 8MP camera with full 1080p video recording ICloud / App Store / Air Print / Retina display UMTS/HSDPA/HSUPA (850, 900, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz) 802.11b/g/n Wi-Fi (802.11n 2.4GHz only)