I'm in Iceland and I bought an expensive 4G siminn card. I want to use it on my iPhone. I heard you needed to unblock your phone to use a SIM card like this in it. Will unblocking make it useable and can we (Canadian ) use 4G cards for internet? Thx.
So long as it matches the bands of the carrier in Iceland and it should. Once it's unlocked, and you have an iPhone so it's best to send a private message to Koodo via Facebook Messenger or DM via Twitter to get it unlocked, it'll be 50 bucks and you'll be good to go in Iceland.