it's time for an upgrade on my dads phone.  he still uses my first phone from 10 years ago so he obviously doesn't need nor want a new phone, but i do.  the problem is the required data plan.  my question is if i get a new phone on his line, but never activate it, will the new data plan still be added?  i already have a data plan on my line, so using a new phone on it won't change anything.