Pairing an iPhone 4S with a non-iDrive, base radio 2008 328 coupe

Recently, a coworker paired an iPhone with his Prius' radio. He said that I could do the same thing with my non-iDrive, base radio-equipped 2008 E92. After much web-browsing, I'm beginning to doubt that I can do so. None of my owner's manuals offer guidance. Any suggestions?

Thanks

Do you have Bluetooth in your car? If you have premium package, bluetooth is usually included.

I'm sure there's an answer on e90post.com though