i bought an iphone 4s a few days ago from an apple store directly in australia (i'm now back at my own country) and I've been trying to activate the phone but it just wouldn't work. I tried both itunes and wifi. I keep getting the same message "Could not activate iPhone. Your iPhone could not be activated because the activation server is temporary unavailable. Try connecting your iPhone to iTunes to activate it or try again in couple of minutes. If this problem persists, contact Apple Support" my question is, could it be my sim card problem or apple's problem? i'm so frustrated and sad as this is my first iphone. Is there anything i can do to solve this problem?