The major caveat would be the specific in-ear pieces. It does not make a difference how amazing the earphones are, when they will not remain inside your ear, are uncomfortable, etc, they basically is not heading to perform out for you. I swapped out the default in-ear item for that more compact Fish Bone Series Hard iPhone 4 Case Cover-Purple that will come using the Tour also it worked correctly for me.
I picture that one can find in all probability some replacements you could get from someplace else that might also perform here, but this may very well be a dealbreaker for almost any brand name of iphones and also head to are no exception.