I've been using the Cyclemeter app on my iPhone 4S with iOS 5 for a couple of weeks and decided to augment its accuracy with a Garmin GSC 10 speed & cadence sensor. I fitted the Garmin this morning but can't get it to pair with my iPhone. I've turned on Bluetooth and the red and green lights come on as they should when the pedal and spoke magnets pass. I've tried removing the Garmin's battery and replacing it after 30 seconds and switching the iPhone off and on again.
Should this work or do I need to add some other app or device? I've been searching on the net for a couple of hours throughout the day but just can't find an answer.