General the process com.android.phone has stopped unexpectedly
I have had the same problem (Android 4.0.4, XXBLFB). After the first setup of my S3 I transfered my contacts via Bluetooth (source was a Nokia phone) to my S3. After the transfer I had the "unexpected com.android.phone error".
I solved the problem (until now!) with a kies-backup (only contacts). After the backup I deleted all contacts on the S3 (!Attention! All SIM-contacs will be lost!) and reinstalled the backup-data again with kies.
May be that this will sove your problem(s) too. Good luck!