This has been on my mind for a bit. As of now LTE is not capable of doing Voice over LTE so when you call someone, it drops down to 3G. As we know with the 5, Apple didn't add a 3rd antenna to be able to do data+voice at the same time while on Verizon's/Sprint's CDMA 3G network. I believe in 2013 Verizon will start upgrading their LTE network to allow for Voice over LTE. The Qualcomm chip in the 5 is capable of doing Voice over LTE I believe. So will 5 users eventually be able to do voice+data once Verizon is done doing the upgrades, or will Apple hold that feature until the 5S/ next generation as another reason to buy a new iPhone?