So starting back in October I started having repeated issues with dropped calls on my iPhone 11 Pro. A 30 minute conversation had reached the point of 8-10 phone calls 3-4 minutes before dropping. It is "around" the same time as my upgrade to iOS 14, but I can't be sure that is the issue. It may only be a coincidence, but I gave Verizon the benefit of the doubt. I waited several weeks for the usual bug fixes that usually follow a new iOS level to see if any would remedy my problem. No luck.
So then my favorite part of Verizon's customer service. You have to call *611 from your phone and wait on hold for forever. Which is a lot of fun when you are having repeated dropped calls and don't own any phone besides the cellular. So it would literally take hours to try and get someone on the line before it dropped or I would have to start all over again.
The day before Thanksgiving I finally got someone on the phone. They walked me through a ton of menu and setup options. All of my setting were already at what was recommended. I was told that my SIM was "out of sync" on the network end and was going to be reset. To give it 24 hours and someone would call back to see if my issue was resolved. Oddly enough that is when I discovered that not only was I dropping calls, but was not receiving all of my incoming calls since the phone never rang, didn't show a missed call, but I eventually received a notification that I had a voicemail from someone apologizing that I missed their call.
Spent the next several days calling to support to try and get this fixed. Another frustrating part. Each time I would call I would have to spend 30 minutes or so with level 1 support before getting escalated to level 2 and each time the level 1 support would walk me through trying all of the things that had already been tried. Ugh! Everyone was polite and friendly, but still frustrating. Had several interactions with level 2 support as well. Each time they would walk me through setting, do network resets, pull diagnostics, etc. but nothing has fixed my issue. They finally had me go to a corporate store where my SIM card was replaced. This had no affect on my issues. I was eligible for an early upgrade so I went ahead and ordered a new iPhone 12 Pro. I received it in 2-3 days. From the start it had the same issues.
After about 2 weeks of diagnostics, setting changes, phone resets, a new SIM card, and a new Phone all with the same issue I finally got escalated to the tier 3 networking team and was promised I would either be fixed or updated within 48 hours. So far that includes a text message each day saying that my ticket was assigned and I will be updated soon. There is no actual update other than that I will eventually get an update.
I've had Apple phones since iPhone 2 and have had Verizon since long before that. I'm fairly certain that if things aren't resolved soon I'm done with both of them.