The Sonim XP5900 AT&T Locked smartphone features a Quad Core processor, 2.8 inch screen, and 16GB storage capacity. With a sleek black design and a built-in rear camera, this Android device offers 4G connectivity and 2GB RAM for smooth performance. The single SIM card slot allows for easy use, while the manufacturer provides a 1-month warranty. This brand new in box phone is compatible with AT&T and GSM unlocked networks.