"Mexico Roaming Bonus" is available under International Features. "Canada Roaming Bonus" is available by calling the 800 number and saying "retentions" to the voice prompt.
You do need a Mobile Share plan, or the new Directv Unlimited Data plan.
Each allows for unlimited calling and text to and from each respective country, and each has their own 1 GB data bucket to use while roaming. Additional data is charged at $20/GB
I found the following after surfing around a bit on AT&T's site:
Unlimited Talk & Text to Canada and Mexico
All Mobile Share Value plans and the AT&T Unlimited Plan include unlimited messaging to the world
1 including Mexico and Canada.
Our currently available Mobile Share Value plans of 15GB or higher, and the AT&T Unlimited Plan, include Unlimited Talk & Text from the U.S. to Canada and Mexico
2.
For Mobile Share Value plans with less than 15GB or for other AT&T plans, add
AT&T World Connect Value® for $5/mo. per line to a domestic postpaid voice plan and get discounted calling rates from the U.S., Puerto Rico, and U.S Virgin Islands to over 225 other countries.
3
Additional opt-in Mexico roaming features
The AT&T Mexico Roaming BonusSM package
4 can be added to each cell phone on your Mobile Share, Mobile Share Value, or AT&T Unlimited Plan, and includes:
- Unlimited talk within Mexico and from Mexico to U.S.
- Unlimited text
- 1GB of data for use when roaming in Mexico (overage is $20/GB)
The AT&T Mexico Roaming Data BonusSM package
5 can be added to each data-only device (such as a tablet) on your Mobile Share, Mobile Share Value, or AT&T Unlimited Plan. This Bonus package includes 1GB of data for use when roaming in Mexico (overage is $20/1GB). This feature does not include voice or text.
Important information about the opt-in roaming features
Requirements for the AT&T Mexico Roaming Bonus & the AT&T Mexico Roaming Data Bonus:
- Each device needs to opt-in to receive the feature.
- The included 1GB data can’t be shared with other devices on the plan and does not rollover.
- One-month commitment term required (package is billed monthly until cancelled by customer).
Looks like the page,
https://www.att.com/shop/wireless/international/mexico-roaming-bonus.html, has a button which can be used to add the "Mexico Roaming Bonus" feature. I haven't scoured the fine-print well enough to comprehend if one can get this withOUT the $5/mo AT&T World Connect Value package for the case of having a Mobile Share Plan that is LESS than 15GB/month. I'm bewildered why in some of the fine print AT&T states, "One-month minimum term required." If it's a *free* add-on, then what's this one-month minimum stuff? I also love how this Mexico Roaming Bonus feature also advertises the ability of unlimited SMS texting to "more than 190 countries" (and MMS texting to "more than 120" countries) any of which AT&T "...may add, change, and remove included countries at its discretion
without notice." [emphasis, mine].