I'm pretty sure you don't. I think 16, because I got my Rogers account when I was 17. All I needed was a credit card, which I got as soon as I got into university. It was a student credit card. And being an authorized person doesn't mean you can do much, you cant cancel the account.
Thanks
AE
you have t be 16 i believe as i called rogers yesterday for my dad and made myself a authorized level 1 user which she said could walk into a rogers store and do anything but cancel our services i asked her if i could specifally do a hup with out my dad and she said as long as im a authorized user