Fast and frequent travellers don’t have the time to buy prepaid local SIM cards wherever they touch down. Even if they had the time, why go through the trouble? Find out how international SIM cards work and other things you may want to know before heading out on your latest adventure.
€$¥ International SIM card lets you use your mobile for cheap when you are abroad
How it works
How do they differ from regular SIM Cards? Your regular SIM card is designed to work on a single network. The Big Three control most of the telecommunications infrastructure in Canada, so most phones are tethered to local infrastructure by default.
Many SIM cards designed for travelling use call-back technology that turn outbound calls into inbound ones for the phone placing the call. Carriers put that mechanism in place to automatically reduce the costs incurred by customers who bought the roaming card. This means that carriers don’t have to hire people to manually intercept calls and reduce their customers’ bills by hand.