Phone number and email are in my contacts. I have no idea why this is happening. I've read of people with iWatches having the same issue. If your phone and watch are connected by bluetooth, and you happen to have the watch sitting on your desk or charging rather than wearing it, then your phone won't ring and you miss calls. I solve this by always having bluetooth turned off on my phone. It feels like the same problem with my mac. I don't feel like it's anything wrong with the phone, because If I just didn't have a Mac, everything works perfect on the phone. Only problem is it won't ring for texts when the Mac is turned on. Maybe I could create a different Apple ID for my Mac, but that causes a million other issues.