Me again, I contacted Mazda regarding this issue here is their reply:
Thank you for your e-mail.
After checking on our Mazda Handsfree website I see that the device was not cleared to be able to connect via USB even with IOS7. The site can be accessed by going to this page www.mazda.co.uk/buying-owning/owning/bluetooth-compatibility/ and then clicking on the area that corresponds to the Mazda6. Once information is filled in about the vehicle and device it gives a list of functions that are expected to work with that combination. In this instance it doesn’t have that there will be able to be a USB connection between the device and vehicle.
Overall device compatibility as well as individual feature operation and functionality is contingent upon the device software version, device operating system, device settings, wireless service provider, and third party applications installed on the device. Because of this individual user results may vary. Also as new device software versions become available, test compatibility results may change so please check these results regularly.
All of this said, Mazda will always look into the compatibility of devices with our vehicles systems. With this in mind software updates are produced intermittently to change the vehicle’s system to be able to interact with software updates from device manufacturers. It is a good idea to check with your dealership every now and then to see if there are any updates and also keep an eye on the Mazda Handsfree website to see if there are any changes on there.
If you need any further assistance please feel free to call me on 08457 48 48 48. We are here between 9.00am to 6.00pm Monday to Friday.
Yours Sincerely.
Looks like change the car or change the phone!