ATT's nation plus Canada plan will extend your coverage area into Canada. You will have a US number, therefore US callers will pay the same rate as if you were in the United States. Canadian parent collars will pay the same as if they were calling United States. some Canadian plans include free texting to the United States, others do not. If you have an apple or an android phone, look at text plus for Canada. It just came out, and usually virtual Canadian phone number for texting and receiving phone calls.