Founded in 1999, 7 layers is an international group of test and service centers for wireless communications industries. Located in Irvine, Calif., it specializes in manufacturing wireless devices like mobile phones, headsets, data cards, etc. The firm offers a range of engineering services, such as consultancy, certification programs, test specifications, test cases, validation, test automation and antenna design. It caters to various sectors, including GSM, GPRS, W-CDMA, EDGE, 3G, TETRA, W-LAN, Bluetooth and other modern wireless communications technologies, such as GPS, LTE etc.