When I put my iPhone 3GS and Zune HD inside the same pocket with the Zune HD's back facing the back of the iPhone 3GS, whenever there is a reception either 3G Internet connection or phone call, I hear EM interference on my headphone that is connected to the Zune HD playing radio, music, or video. The Zune HD then either crashes to a blue and white vertical stripes screen and I must need to hold the power and the home button simultaneously to hard reset the Zune HD.
I think Zune HD's EM shielding is almost non existances that a cell phone wireless power is able to disrupt the internal component of the Zune HD.
Anybody experience the same thing as I do?