Sometimes listening to the radio isn’t enough; you want to call the radio station and ask the DJ to play a requested song that you like to listen to. Now imagine that you can do that anytime you want with a little twist; call out and request your favorite songs on your iPhone 4! Yes, not only does the iPhone 4 have an advance voice recognition software that can easily recognize your voice and dial the number you want to call, it can also play songs that you ask it to play.