Hi! Welcome to iPF. I had this problem with my contacts (though not after upgrading to iOS 7.0.3). Just try restarting the iPhone in normal manner. If it doesn't work, try a reset. To reset your iPhone, press and hold the power and home button simultaneously for some time until the Apple logo appears. This may take a bit longer time than usual. Please update if this solved your problem or not. Hope you have a happy time here.