Yesterday I updated my 6 plus to iOS 9 after doing so I noticed that music playback has had troubles. The music clicks, pops, every 2-4 seconds. I use Spotify so I assumed from the start it was a problem with their app and it's updated iOS 9 version so I tried Apple Music and it still did it. I also added music to my phone through iTunes and then played it but the problem still persists. I have not had this problem running previous versions of iOS so I'm assuming it's related to the iOS 9 update. When I connect my iPhone to my car sound system I do so through a lighting cable and into the USB port in the car. I do this for a couple reasons. 1) It sounds better than bluetooth audio 2) While playing music in my car I'm also charging my phone which I like. I tried a couple different things to see if I could fix the problem. First I deleted and reinstalled the Spotify app which didn't help. I also tried to play music that I had synced to my phone vs music I was streaming through Spotify that also did nothing. I tried a couple different lighting cables to see if that would help, it didn't. Finally I restored my phone and set up as a new iPhone to start from scratch, this also made no difference. Has anyone else noticed these problems? I am hoping it's something that will be fixed in the 9.1 update.