Galaxy S7, Dual-layer Heavy Duty Matte Rugged Protective Cover with Slider ID Credit Card Slot Cash Holder for Samsung Galaxy S7 by Cazle (Gold) COMPATIBILITY: This Galaxy S7 case is Precisely Cut for Samsung Galaxy S7 G930, G930F, G930FD EASY GRIP: Anti-slip, tactile grip perimeter texture designed to release the flow of forced energy created from drops WALLET FUNCITON: Minimal Yet efficient ID storage slot gives extra convenience (UP to 3 Credit Cards and Cash Storage) Enhanced impact resistance and shock dispersion Easy Slider Door for the ID Storage PHONE SPEC:The phone runs on the Android operating system, which is currently the most popular platform on the market. The Galaxy S7 comes with Android 6.0 Marshmallow which is the newest Android version available. TouchWiz, by Samsung, runs on top of Android on this device, offering a customized experience. PHONE CARRIERS:The Galaxy S7, from Samsung, was unveiled at a press conference at MWC 2016 in Barcelona on February 21, 2016. In the US, it's available from a variety of carriers, including AT&T Wireless, Verizon Wireless, Sprint, T-Mobile, and U.S. Cellular.