I don't have personal experience, but all of their default plans advertised here seem to include at least Mexico: https://www.att.com/plans/wireless.html https:

I don't have personal experience, but all of their default plans advertised here seem to include at least Mexico: https://www.att.com/plans/wireless.html https://www.att.com/plans/wireless.html Maybe you're on an older plan (that may also be cheaper)?