My family and I have three phones on a plan, we just have a basic phone plan with unlimited texting. We want to change our plan to be able to have smart phones. I know it's about an extra 10-20 dollars a month. If we switch our plan, do we have to wait until all of our contracts are up? If we can change it now without waiting forte contracts to be up, do we get a discount on smartphones with he new plan right away? Or do we each have to wait for our upgrades? Thanks a lot!!!