I just switched from an HTC Rezound to an iPhone 5. The device is brilliant in almost all respects....the problem is that it is terrible at what it was designed to do; make phone calls. Although my rezound worked flawlessly, the iphone has dropped every call I have made with LTE activated, and around half of the calls I have made on the 3g network with LTE turned off.
I have already tried a factory reset of the network settings and taking out and putting in the sim card. Any help you can provide would be most appreciated.