public mobile offer only to U.S. Roaming,
you can purchase prepaid sim card data central america: Amazon.ca,
or no need to purchase a SIM card, any tourist resorts has a Wi-Fi Free,
and use a app Textme or Talkatone, and you will getting new canadian number for Free from that app,
• Unlimited Call \ SMS \ MMS a Free USA/Canada.
enjoy your trip..
important to you know about Reactivate a suspended plan (publicmobile.ca)
It depends on for how many days you are planning to go to central america. If more than 10 days then local SIM is recommended else for 10 days and less the 10 day US roaming add-on is good. Buy on the day you are going and if it gets topped up account then purchased and confirmed in 'my account' then just look for the network of AT&T (preferred) and you are good.
Keep this thread in the bookmarks until you come back. Keep posting your experience and any hiccups you may encounter.
US roaming does not work in Central America
Local Sim is the only choice
It doesn't but with a local or global sim card you have a lot more options for your pm service.
Edit: Central American SIM card guide...
Options for your account and service....
Most important mark on your calendar day 85 of your suspension and day 90. Do not forget when you must unsuspend your account via lost/stolen and/or pay and reactivate your service so you don't lose your phone number and account. Happy travels!