SIM Cards can save limited contacts and phone numbers. You can access the contacts on SIM card on the Android phones. On Samsung Galaxy S4 showing the SIM numbers are done by doing as follows:
1. Open "Contacts" App
2. Hit "Menu Button" (The one left to the Home button)
3. Tap on "Contacts to display"
4. On the opened list, find "SIM" and mark it
5. Now you can see the numbers saved on SIM
Read More Galaxy S4 Tips and Tricks