The YDS-12 has two modes - an A mode that supports iPhone with the receivers listed below and a B mode that turns the YDS-12 into a YDS-11 for support with older receivers but then iPhone is not supported.
Receivers that support the iPhone with the YDS-12:
Officially the YDS-11 does not support the iPhone.
YDS-11SL Universal Dock works with:
* iPod touch
* iPod nano
* iPod Click Wheel (including iPod classic)
* iPod mini
However, in our unofficial tests, with the iPhone in "airplane" mode we are able the charge and play music through the dock.