Software Update for iphone 4s

I did the software update for my iphone 4s last night and now my incoming text messages show the person's phone number instead of their name when I get a text. Is there a fix to this so I can see their name and not try to guess who's number it is?

Also, after the update, Siri wouldn't call the people I asked to call. I even tried 3 different people. Fix?