for iPhone 5 5s Case, Roybens Luxury Metal Air Aluminum Bumper Detachable + Mirror Hard Back Case 2 in 1 Cover Ultra-Thin Frame for Apple iPhone 5 5s - Retail Packaging(Black) There're two parts of the case: Luxury Air Aluminum Metal Bumper + Mirror effect electroplate Plastic Back (Two in One). You can use it as a mirror. Comfortable, lightweight, sleek design that protects without adding bulk. Provides a comfortable grip,added protection of corners against accidental drops. Precisely cut openings allow easy access to all functions. New Snap-on high-quality Case,keeps your cell phone safe and protected in style. Compatible with Apple iPhone 5/5s Only.NOT for iPhone 5C. (The signal problem depends on the carrier your iPhone has.There is no big interference with AT&T or T-Mobile )