When traveling with your family if everyone is using International Day Pass, one line is $10 a day and any additional lines are charged at 50% off.
Good to know: If you talk, send a text, or use data in any of the included countries, you’ll be charged $10 per 24 hours and $5 for each additional line on the same account used the same day, unless you remove International Day Pass. When you don’t plan to use your phone, turn off Data Roaming in your device settings.