sr3515

I upgraded from Iphone 6plus to iphone 7plus a couple of months ago - i have not been able to play songs from my iphone over my 2011 e350. The sound is broken up and sounds like a broken record..... i absolutely can't stand the sound - anyone else having this issue? i tried to pair it on a bose bluetooth in my house and it worked just fine...... i even tried to reset everything in the car and paired it again.....still sounds choppy