Thread: Phone displays 'Unkown' on incoming calls from people in my contact list

Does anyone know how to solve this problem:
My HTC Tattoo is acting like it doesn't know people in it's phone book
When I get a call from a friend, it displays the generic 'Unkown' image instead of that person's name and photograph.

This is really starting to bug me as I screen my calls and if I get an unknown caller I tend not to answer it - and at the moment I can't tell the difference between people I know and people I don't

Any advice will be gratefully received!

+1. Same problem. HTC Sensation and Sensation XL.