There may not yet be a single production car currently on sale that offers support for CarPlay, Apples new technology for mirroring an iPhones screen and its apps on the dashboard, but that hasnt stopped Apple from enabling the feature on iPhones in anticipation via iOS7.1. But as well as prepping its customers phones for the future, the new update, available to download now for iPhone 4, 4S, 5, 5C and 5S, brings new graphical icons for features such as FaceTime, the voice call dialer, and messaging. Users will also get more control over how Siri, Apples voice activated virtual assistant, works. The camera function is also improved and for owners of the iPhone 4, which has struggled under the weight of the new operating system, Apple promises the new update will be a noticeable improvement in terms of smoothness and speed.