(UPDATE: Facetime calling is now working for some reason. My guess is, it takes a while for the reset, re-logging in to take effect...can be days...so there you have it. At least I don’t have to re-instal Mojave.) I’ve recently been having “failed” incoming and outgoing calls from my 2018 MacBook Pro 15” coming from my iPhone X. I think it started happening after the latest Mojave update. Done everything in the book and have been talking to an Apple Tech Chief Advisor about this issue and tried everything with her, ultimately I was advised to re-install Mojave. But before I do it, has anyone been in the same boat as me? What solved your issues? I gotta say, a simple log-out from iCloud would normally solve this but I think this is beyond a normal issue. Thanks guys!