The free-call bonanza now includes France, Israel, Italy, Thailand and the UK, among others.
You can make unlimited calls to a handful of countries and earn credits toward free calls to 85 others.
This is the third time that AT&T has added unlimited calling to Mexico in its different plans. The company previously brought it to World Connect Value and its subisidiary Cricket Wireless.
And why you may prefer to stick with one color or the other.
The carrier previously charged 1 cent a minute to wireless and landline numbers in Mexico.
FreeTone delivers on its promise of free text messaging and calling within the US, but falls short on just about everything else.
The popular messaging app appears to have switched on its promised voice calling feature, with some users reporting the functionality appearing in the latest app build.
On paper, it doesn't make sense for smartwatches to have their own independent connection. But AT&T is working to make sure it's in the mix when it comes to wearables.
The second generation of the Finnish alternative to Android will appear in phones and tablets this spring, including Intel devices.
The carrier serves up two options for customers looking to save on international phone calls to dozens of countries.