This is so irritating. I changed my service from AT&T to Verizon back in September when I got a new iphone 6GS+. Now I drop calls like crazy now, several times a week. I'm in a major metropolitan area, so I'm really surprised this is happening. I've tried resetting network settings, as well as calling Verizon help, but nothing has fixed the problem. What should I do?

Thanks very much!