Hi there,
I think you're not alone... I've had the same issue for some days now. Restarted the phone several times to no avail. All inbound phone numbers were not resolved into contacts even though 99% of them exist in contacts. When I gave the call history a look after terminating a call, names would appear in the list though.
A few moments ago I remembered that I installed Adaffix, an app that retrieves inbound phone numbers from an internet phone book, so theoretically it can help you create new contacts with name, address, etc. from just a phone number (presuming they appear in the public phone book). This worked fine for some days, but I noticed about a week ago that no Adaffix dialogs were shown any more, and probably this is around the same time that the internal contact resolution stopped working. Didn't give it too much attention then, but now it annoyed me once too often.
I have just disabled Adaffix - didn't uninstall, just set the main option to use the service 'off', and contacts are shown again when they are ringing, just the way they should.
Maybe you are using Adaffix, too? Or some other kind of lookup helper app that intercepts inbound numbres? Try disabling it in that case, and let us know whether it fixed the issue.
Regards,
Joe
