Now there's a signal booster for those who need enhanced coverage in their vehicle for devices operating on the 4G networks of any major North American cell service provider (except Clearwire & Spark) -- the Sleek 4G from Wilson Electronics. The Sleek 4G also amplifies preexisting signals, which includes all major carriers and their legacy 2G & 3G voice and data services. This provides the user a strong, reliable signal even where 4G services are unavailable. This powerful signal booster and device cradle helps you stay connected by providing a strong reliable signal in weak-signal areas on five frequency bands, reducing lost connections and speeding data transfer rates. It boosts both voice and data communication -- making it perfect for phones, data devices and cellular Wi-Fi hotspots. Wilson boosters feature cell site protection techniques developed through cooperation with major cellular carriers that prevent the possibility of interference with any nearby cell tower.