If I add a mobile phone line does it come with a sim card?

[brianj]

If I add a mobile phone line does it come with a sim card or do I have to buy one?  Most companies, at least outside Canada, will give you one?

[digitalife]

You'll have to buy one but you can call and request a sim and they could give it to you for a discounted price. Am not sure about them giving out free sims