Hi, I hope someone can help me with this question. I'm travelling to Vancouver and then travelling to the USA (to San Francisco). I'd like to stay connected and will bring an (unlocked) iPhone with me but I'll need a sim.
Is it better to buy a sim card online before I travel? Or is it easy enough to pick one up once I'm there?
Would a sim for Canada work in the USA without incurring roaming charges? Or would I need a Canada sim and a separate USA sim?
Any recommendations, please?