From all of the hoopla over simultaneous voice and data between AT&T and Verizon on LTE, it dawned on me that I may have a problem with the new iPhone 5. I have very poor 3G service in my home location but am able to get a decent LTE signal with AT&T. Voice calls to my iPhone 4 often go to voicemail. I got a microcell which helps some. I was hoping that by switching to the iPhone 5 on the LTE network, this problem would be eliminated. It now seems clear that I am mistaken, since LTE does not support voice. Is it correct to state that as far as voice signal is concerned, there is no difference between iPhone 4, 4s, and 5?