from the checkout on the Canadian site: About the unlocked iPhone. The unlocked iPhone includes all the features of iPhone but without a contract commitment. You can activate and use it on the supported GSM wireless network of your choice. The unlocked iPhone 4, iPhone 4S and iPhone 5 will not work with CDMA-based carriers. An unlocked iPhone 5 may not support LTE networks in all other countries; contact service providers for details. If you dont want a multiyear service contract or if you prefer to use a local carrier when traveling abroad, the unlocked iPhone is the best choice. It arrives without a SIM card, so youll need an active SIM card from any supported GSM carrier worldwide. To start using it, simply insert the SIM card into the slot on your iPhone and turn it on by pressing and holding the On/Off button for a few seconds. Then follow the onscreen instructions to set up your iPhone.