Both the Passport 1GB and 3GB plans offer subscribers unlimited Wi-Fi access at participating hotspots via the AT&T Global Wi-Fi app. They also receive unlimited texting and $0.35 per minute of talk time to any country.
The big difference between the two plans is the amount of data allocation which is now pretty evident by their names. Passport 1GB offers 1GB of mobile data and you get the picture. If subscribers go over their allotted data limit, they will have to pay an overage fee of $50 per additional GB.
AT&T has started selling the Passport 1GB and 3GB plans now. Both of them can either be purchased as a one-time package or as a recurring charge for those who travel frequently can don’t want the hassle of subscribing and unsubscribing every time they’re taking a trip.