I'm not sure if this has been answered but I was having problems when I would pull out my mp3 cord or headphones I would lose control of vol buttons on side until I restarted well I got the idea to restart the phone with headphones and it fixed it just wanted to share I hope I can help someone with the same problem just got the phone few days ago and thought I would have to take it back but with the fix back to enjoying this amazing device
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