In Reply to: sim card expiry posted by trembler on Monday, 29. June 2009 at 14:38 Bali Time:
You can put them in your phone and try them out in Oz. Simpati roams through Optus, so if you get a signal it is probably still good, but don't hold your breath! With the Simpati you can check remaining credits while in Oz using *888#. Not sure how to check xl or if they roam here. Let us know how you get on.