So, I was doing my final research on the used Klipsch s4i and noticed that the volume up and down functionalities of the wired remote will work with my 3G phone. It fully works with the 3GS and second gen iPod touch along with a couple other iPods. So, as I will be upgrading to the next version of the iPhone later this year, I wondered if these will be compatible with them. I would assume so as they weren't released that long ago. I just figured before I invested in them, I'd see if the consensus was that they will/should work with future hardware.