Let's say I have Bob as a saved contact with the phone number 123-456-7890. Usually when he calls me, it shows up as "Incoming call from Bob". However, sometimes it shows up as "Incoming call from 123-456-7890" and the associated contact name doesn't show up. The issue is always resolved when I restart the phone, however it's very frustrating that this happens in the first place. Has anyone else experienced this issue? I have a Lumia 920.