It's not too much of a big deal but because the iphone can play music through its speakers, there would be a potential moment where music will blast through your speakers in a quiet location...aka work. normally this isn't that big of a deal because when you pull the headphones, the music pauses and goes to your previous volume used without headphones. But its not perfect. I wish Apple would just give you the option to turn off speaker support when using itunes. so you can only hear the music though headphones. It happen to me once already, my music was blasting at work and of course, you are gonna panic and first thing you think of is turn off phone but the music will still play. Its like 20 seconds before you settled down and put the volume down.