Apple iPhone 6S, GSM Unlocked, 16GB - Space Gray (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 Phones are ONLY compatible with GSM carriers like AT&T and T-Mobile as well as other GSM networks around the world. They WILL NOT WORK with CDMA carriers like Sprint and Verizon (Search for "Fully Unlocked iPhones" for CDMA compatible iPhones). LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30); TD-LTE (Bands 38, 39, 40, 41); TD-SCDMA 1900 (F), 2000 (A); UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz); CDMA EV-DO Rev. A (800, 1700/2100, 1900, 2100 MHz); GSM/EDGE (850, 900, 1800, 1900 MHz)