LINKASE PRO - 3G/ LTE + WiFi Signal Enhancing Case for iPhone 5S/ iPhone 5 for T-Mobile and all LTE provide in Canada and Mexico (Frost White) Compatible for iPhone 5S and iPhone 5, for AT&T, Sprint, Verizon, T-Mobile and all LTE provide in Canada and Mexico Enhance 3G & LTE Connection in Low Signal Area (1-2bars) Enhance Wi-Fi Connection in your usual deal spots 20% Extra Battery Life - 40 minutes extra talk time Made with Shock-Resistent Polycarbonate and Multi-Layer Coating for scratch proof