One of the new features of Android 4.3 Jelly Bean OS is the dial-pad autocomplete, a feature that is already available in several custom build ROMs. If enabled, this feature will suggest phone numbers or names when you just start dialing a number. It uses your address book to suggest phone numbers and names.
For all those users who have already bought the new Nexus 7 (2013) or update their Nexus 7 (2012), Nexus 10 or Nexus 4 to Android 4.3 Jelly Bean and couldn’t see the dial-pad autocomplete feature, don’t worry, this feature has been disabled by default. Here is how to enable it.
To enable this feature, run the phone app, tap menu button and then select “Settings”.
Scroll down through the options and enable “dial-pad autocomplete” option by checking the check box against it.
Now, just start touching numbers or letters, the dial pad will suggest phone numbers or names.