Hello, BwanaJim. When using Wi-Fi Calling on an iPhone, your device will reflect Verizon Wi-Fi on the signal strength, and when connected this way, your device will make all calls through Wi-Fi. You would not be using cellar data with these calls. We want to make sure to help with everything you need. Is there a particular reason you had this question regarding cellular data?
Sometimes my phone does not display incoming calls nor does it show in recent calls.
i have checked every other phone security apps and settings and they Verizon one was last.
That's certainly concerning to have calls not showing up during the time or after the fact. We'd certainly like to hear more and help ensure all you're calls are coming through. How long has this appeared to be happening with your phone?