KAYSCASE ArmorBox Heavy Duty Cover Case for Amazon Fire Smartphone 2014 Version (Red) Compatible with Amazon fire smartphone Cell Phone Case. Inner TPU case wraps around the phone with a lip around the front edge of the glass. The outer poly carbonate hardshell provides extra protection to the back, side and corners. Accessible to all buttons, connectors, speakers and camera. A kick stand on the back of the shell can turn your device into a small media center.