I am having the same problem. Elite flip with iPhone 5 (running iOS 6.1.1) and the caller on the other end of the line hears an echo of them-self. Again, they hear an echo of them-self when they are talking. If I push the mute button on my headset or iPhone 5, the caller on the other end no longer hears the echo of them-self. But then they can obviously no longer hear me...
I know it is not simply a problem with the headset because I can pair the elite flip to my wife's non-apple phone, or my brothers 4S (running iOS 4.3), or my sister's 4S (running iOS 6.1), and the headset works perfectly with all of them.
Seems to be a problem with the iPhone 5 connecting to flip. Also, I've noticed that when using my flip with the iPhone 5, the headset mute button will get stuck if I turn mute on. Then when I try to turn mute off, there is no response, if I push the button again, mute turns off and then right back on very quickly... Weird... Apple is starting to suck!!
Any help on fixing this issue would be appreciated????
Same problem here too. Worked fine with my iPhone 4 and has been a problem since day one with Iphone 5. Now after having been through 4 headsets with Motorola, time to aknowledge the problem is with Apple. And I agree with your statement....Apple ain't what it used to be. I never had problems with any of my previous iPhones. Never thought I'd consider an Android phone but it looks like the door is wide open now. I don't have time for this.