My brother and I have the Plantronics 520 ear piece and have used them with our iPhone 3GS's with no problems. We live in different states. We both just upgraded to iPhone 4 and now notice that the clarity of phone calls with our Plantronics ear piece is not as clear as it was on our iPhone 3GS. People have said it sounds like we are talking "under water." Is anyone else experiencing clarity issues with their Plantronics 520 on the new iPhone 4? Thanks.
-Mike
-Mike