Rumor: Apple To Switch On Sleeping FM Radio in iPhone, iPod Touch

It will probably only work for the next-gen iPhone/iTouch if the rumor is true because the Broadcom WiFi/BT/FM chip needs separate antenna for FM TX/RX. The current WiFi/BT antenna uses 3T switch, no room for FM. No evidence that that antenna exists so far unless it uses earphone cord as antenna (like iPhone Nana). http://www.broadcom.com/collateral/pb/4329-PB00-R.pdf

Also, not FM, Nike+ uses Nordic nRF2402 (BodyLAN/ANT) in TX and Broadcom BCM4325/BCM4329 in RX. I had a screenshot that Apple has a proprietary Bluetooth "sensor" profile for Nike+. http://www.flickr.com/photos/johannchiang/3812514411/