Set native Jelly Bean dialer and contacts for Samsung Galaxy S3
The Samsung ROM doesn't have the stock AOSP dialer and contacts app. It has Touchwiz themed dialer and contacts app. This is one of the most glitchy and slowest of dialer apps out there. 


Try the Swipe Dialer if you care to. It has good reviews and seems to be working fine across the board.
Another option will be to port AOSP dialer as in Cyanogenmod. This is advanced stuff and you'll need knowledge of ADB. Try it out if you want.
The easiest way out is to flash a custom ROM. Try Cyanogenmod, AOKP, Paranoid Android, etc. There are several others too. Try XDA Developers forums for more in depth info.