Ugh. Already got this issue. When pressing the Phone button to make a call I get the Unfortunately, Contacts has stopped error. Search reeals long standing issue since S4. Many fixes (uninstall FB and Messenger, clear Contacts cache, etc). Tried them all no love. I cant believe I bought a phone and I cant make calls.
Couple suggestions report that it might be related to Verizon Visual Voicemail which I did recently try - so the timings correct. But I cant disable it. Going to have to hard reset - not happy. But FYI to other users.