AT&T subscribers haven't had the greatest international roaming options. The carrier's Passport plans give you a tiny amount of data even at the highest tier, which could make it cheaper to unlock your phone and use a travel-friendly SIM card. At last, though, the network is offering something for travelers who don't want to scale back their usage while abroad. It's introducing an International Day Pass that lets you use your domestic plan (including data) in over 100 countries for $10 per day. It goes a little further, too: you can make unlimited calls to both the US and any Day Pass country, and as many texts as you like anywhere in the world. Passes will be available starting on January 27th.