iPhone in the beltpack clipped to the backside portion of the waistband. Earbuds cord runs up the back and each bud is twisted once around the helmet strap so the wind doesnt pull the cord to one side making it feel like it's tugging (saves fussing with it every 5min in the crosswinds).
It's my guess that mounting the iPhone to bike will result in early failure due to the vibrations and sharp movements.