AT&T to start selling International Day Pass for traveling subscribers
The plan covers over 100 countries within Europe, Asia, the Caribbean, and all of Central and South America. It takes advantage of AT&T's affiliate networks in each country.
To prevent abuse of the feature, AT&T will remove your IDP if international voice, text, or data usage exceeds 50% of your total usage for two month straight. Thus, the service is designed for short term visits, such as vacations and business trips, rather than extended stays. Also, passes are sold on a per-device basis, which means it could get expensive to connect family members on a shared plan.