Verizon in Canada
Last year I traveled to Ontario doing the lake Superior tour in August and prior to that I did a trip into Manitoba in May. I used my phone everyday for 10 days in Canada without calling ahead to Verizon and letting them know I was traveling. I expected my phone not to work at first but then when it did I assumed that I was going to get slammed with charges. I still used it for an hour plus each day checking in with family.
My next bill showed nothing different. No excessive charges, nothing that indicated that I was using it in Canada. I did that for both trips and never got charged.