See also: How to Copy Contact from Phone to SIM Card on Samsung Galaxy S3
In addition to copy contact from phone to SIM, here you can also copying contacts to your internal memory using export to USB storage option. The file will be a .vcf format that you can import to another phone or re-import it again to your Galaxy SIII.
How to export contacts to USB storage?
Follow the steps listed below to transfer contacts to your internal memory as .vcf file:
- Go to Apps through Home screen.
- Tap Contacts.
- Tap the Contact tab.
- Tap the Menu key.
- On pop up menu select Import/Export.
- Tap Export to USB storage.
- Tap OK button to confirm exporting contacts.
Exporting contacts as .vcf file to your internal memory will allow you to import it again later. This of course will useful if you wants to replace your SIM with the new ones but still wants to keep the contacts you've already have. So, hope this helps :)