Can I use my iPhone outside my home country?
Yes. iPhone is enabled to work on carrier networks using GSM around the
world. Because the iPhone sold by the Apple Online Store is commitment-free,
you can purchase a SIM or micro-SIM card and service from a local carrier
at your destination. Or check with your home carrier regarding international
roaming charges. http://store.apple.com/ca/browse/home/shop_iphone/family/iphone