I was seriously thinking of trading in mine with 2K miles because of this click. I was going a little insane with that sound. Like said above moved the seat up a touch and it was better.
I had the connection issue only when I had my personal and work phones both set up. I would just have to select the phone I wanted to connect on the head unit. I ended up deleting on of the phones and I have not had any issues since with the LG V10 connecting