I am a UK user of an iPhone 5, and have found that, follwing an 'upgrade' to what seems othweise to be an excellent IOS7, the hands-free settings on my 2008 Ford Focus ST for making telephone calls no longer work. With the radio on on the factory-fitted Sony in-car audio unit (a six-disc CD changer, radio etc), if I 'interrupt' the programme to make a call, I can tthen neither easily go into my list of contacts to make a call, as I could with the previous OS on the phone, nor does the red 'end call' button seem to take you back to radio use if you decide not to make a call. That red button still works to end an actual call, but pressing it when you have decided not to make a call no longer takes you back to the radio operation, as it should; in such an instance the red button, which worked fine before the IOS 7 upgrade, is unresponsive. Has anyone else with a similar car, Sony standard car audio unit, and iPhone 5 running IOS7 had similar issues? I am on Vodafone 3G.