If you have some personal contacts which you want to hide from the general device contact list, then SIM hide show is a good application. This free application will show and hide your SIM contacts from the device contacts list. It simply toggle show/hide very useful if you dont want to mess up your contacts.

To install this application, simply copy the download file and unzip the archive, then copy the .exe file on your device an run it to toggle show/hide SIM contacts.

More instructions on using this application can be found here.

Download SIM Hide Contacts