My '11 35d experienced the USB issue, where my iPhone was no longer connecting, nor could any of the ports charge it (tried with another phone and cable). Made an appointment with dealer (tomorrow). However, the functionality came back yesterday. Will keep the apointment and let them look at it, since there are other issues as well:

1. Rear driver-side passenger door looks a couple mm out of it's place. Doesn't look good with door welcome lights
2. Brake pedal goes side-to-side a bit.

1900 miles on the odometer. In a month!