Hate to burst your bubble, but if it's blocking UV, it's blocking electromagnetic radiation (ultraviolet is a set of EM wavelengths). Whether it blocks the RF bands of the spectrum is key.fuzzyb said:I saw on the news that only special tint blocks UV rays from the sun. Because of this you can get a burn / skin cancer easier on your left side from the window. If that is true then the tint would not block electromagnetic radiation (radio waves) either. My cell phone still works in side my car.