Use AT&T Prepaid in Canada first before using in the USA

AT&T service cannot be activated outside of the USA.

I was planning to activate it online.

it needs to be activated then connect to the at&t servers cant do that from outside the US 

Hello weisswelt, we're here to help you with getting your AT&T PREPAID phone activated.

As the ACE @formerlyknownas and the employee @Constructive mentioned, AT&T service cannot be activated outside the United States. This will allow your account to get connected with the AT&T servers. 

For your benefit, we have some useful information on activating your AT&T PREPAID account that you can review at your convenience.

Let us know if this helps, and thank you for reaching out to the AT&T Community Forums.

Jeff, AT&T Community Specialist

Please don't focus my question on whether or not you can activate the AT&T Prepaid service outside the USA. I already paid the AT&T dealer and he said he is going to activate it for me upon my request.

Or let's just say that my friend activated an AT&T Prepaid Phone in the U.S. for me but did not turn on the device and just brought that phone to me to Canada. Would I be able to use the roaming service in Canada?

Thanks for your response, @weisswelt.

Be advised, if the AT&T Prepaid Plan is active with your device then you'll be able to roam on the cellular network. 

Let us know if you have any other questions or concerns. 

Thanks for reaching out to the AT&T Community Forums for help.

Lynn, AT&T Community Specialist 

Please don't focus my question on whether or not you can activate the AT&T Prepaid service outside the USA. I already paid the AT&T dealer and he said he is going to activate it for me upon my request.

Ummm riiiiight.  That's 🐂💩

Not if the phone isn't in the USA.   🤦🏼‍♀️.  Your phone will only be connected and able to be activated while connected to an AT&T tower.  AT&T does not have towers in Canada. 

Or let's just say that my friend activated an AT&T Prepaid Phone in the U.S. for me but did not turn on the device

Then it's not activated.  Phone has to be turned on, service has to be paid for, in order for the phone to register on the network and be activated. 

But keep making up scenarios that won't work.  We told you what does, so it's on you to sort that. 

and just brought that phone to me to Canada.

Um, whatever... 

Would I be able to use the roaming service in Canada?

Maybe you should have just stuck with this sentence? 

AT&T prepaid current service plans offer free roaming in Canada and Mexico. End of story.

Data roaming may be at 2G speed. Rogers seems to be a consistently good roaming partner, Telus and Bell are not.