So, I have a dumb-phone line that I'm going to be cancelling next month and it's eligible for an upgrade, has been forever. Two of the three smartphone lines are eligible for upgrades, one is not yet and that one is going to need a new phone sooner rather than later. I don't think I've ever transferred upgrades from line to line or if I did I don't recall what happened to contract dates. Here's what I'm thinking/wondering...can I transfer the dumb-phone upgrade to the line that's not yet due and then cancel the dumb-phone line or is that the line that will be extended? It may be a moot question as I would prefer to pick up phones from Swappa or classifieds here but just in case I decide to upgrade I'd like to know my options. None of the lines are primary, two have unlimited data and one has 2GB. I'm just trying to keep unlimited and keep my peeps happy too. It ain't easy!