I've confirmed with other Verizon users that this is a common problem. I'll have the phone right next to me, but often an incoming call won't ring at all and takes the caller directly to voicemail.
Anyone else had this problem, and more importantly, found a solution?
I have had this issue at home, and bad too. I thought it was the phone for the longest time since no one else was having issue, but it later turned out to be a bad LTE cell site. Eventually, VZW put a newer one closer to my house (with 80Mbps down and 30Mbps Up speeds on LTE

) and the issue fixed its self.
What I did was call Verizon and have them set up a support ticket to check the local cell sites, although nothing was ever done.
The best solution would be to get the Network Extender. There have been mixed reports of people being able to get one for free, but the best VZW could do for me was $80 with my discount, plus it was refurbished. I said it was unacceptable. I already pay my bill, why should I have to pay to fix their issues, I thought thats what I was paying for on a monthly basis.
Their only other offer was to let all four line go without any ETFs. Paying customer, always on time, a customer for over 20 years and 4 smartphone lines active (all under contract at the time, remaining time varying from 11 months-22 months) and I could go scott-free. I'm still with them, however it has been noted on my account that I can leave at any time with no ETFs.
All that over $80. Damn Verizon. What's even worse is AT&T gives their M-Cells away if you have a problem at your house. Come to think of it, AT&T is putting a cell site directly behind my house. Maybe I should try them. Hmm...