Whenever one particular person (whose number is on my Contacts List) calls me from her cell phone, my phone rings but instead of identifying the caller my phone (Galaxy S3) shows "Private Number Calling". Neither of us has (knowingly) done anything to cause this! Can anyone suggest what's happening, or (better still) what can be done to fix the situation? Any other caller who is on my Contacts list shows up their name correctly, as expected. I don't know whether any one else this person calls has the same problem.