You can use the iPhone 4S all over the world. When traveling internationally, there is a setting that must be turned on within the device to connect to GSM. The phone will work with a SIM that is provided within the device out of the box. International voice and data charges are on a pay-as-you-go basis and vary based on the country where you are using your phone. A list of rates is available at www.sprint.com/international.

Sprint has two international voice plans that offer discounted voice rates:

• The Canada Roaming add-on is $2.99 per month and all calls placed from Canada are only 20 cents per minute. Without this add-on, calls from Canada are 59 cents per minute.
• The Sprint Worldwide Voice add-on is $4.99 per month and offers discounted rates in countries around the world. For example, calls from Italy are $1.69 per minute with this add-on or $1.99 per minute without the add-on; calls from Peru are $2.29 per minute with the add-on or $2.49 per minute without it.

Sprint does supply notifications of data roaming charges to protect customers from high costs. Notifications are sent to your preferred method, either text or email, once the device exceeds approximately $50, $100, $150 and each additional $50 in international data roaming usage. To protect you from additional charges, the device’s international data roaming capability may be suspended after you exceed international data roaming limits in a billing cycle. See Know what data limits apply when roaming internationally for more details.