Data roaming is a specific setting on your iPhone that allows you to use your mobile data plan for internet use while you are in a location not covered by your phone service provider. This feature enables you to connect to the internet using a cellular data network in a foreign country or in an area not included in your carrier’s coverage.

Many unlimited U.S. phone plans from major carriers such as AT&T, T-Mobile, and Verizon include unlimited talk, text, and data in Canada and Mexico. However, if you plan to travel to other international destinations, you should contact your carrier to explore the international plan add-on options available to you. Your specific iPhone model, carrier, and the region you are traveling to will determine the cellular data options accessible to you, so it’s advisable to consult with customer support for guidance on configuring your device’s data roaming settings.