Do you have any service bars when you're not making or receiving calls? I don't know if you use VoLTE but when I was using it my iP6+ would drop calls even though I showed bars on my phone meaning I was still covered. Once I disabled VoLTE my problems diminished. I changed the settings to LTE for data only.
We want your brand new phone to work fantastically for you! That's incredibly important! What happens when you try to make a call? What happens when people try to call you? Are texts and data working for you? We'll make sure we figure this out.
Follow us on Twitter @VZWSupport
Am I missing something? I thought you issue was with your phone making and receiving calls...you made no mention of it lagged or being slow. Has the issue cleared for you or are you still experiencing?