Is there a way for me to buy a new phone as well as upgrade my plan if I am Under 18 and (obvs) not the primary account holder? For example I know that a primary account holder can phone Koodo and get someone else added as a secondary holder or like an administrative person or whatever (sorry, can't remember exactly) but will this work for a minor? Also will it work in a store like London drugs or Walmart? Because I was in there today and the Walmart wireless rep wasn't really sure that it was a thing. Thanks!