I recently moved to a mobile share plan and added my wife on as a second device. We both have an iPhone 5. Our contract with At&t is up in Nov. She wants to upgrade to a iPhone 6 and I think I want to move to an iPhone 5S. I've been putting together a spreasdsheet with all plan options to figure out which is the best deal for us. So far, with the little data we have shared(2GB), the 2-year contract option is the cheapest because we can pay the subsidized phone prices with gift cards and our trade-in phone values. The part that is confusing me is how upgrade works now that we are on 1 plan. If we sign a 2-year contract and she upgrades to an iPhone 6, what does that mean for me? Can I also upgrade my phone with the subsidized price? I guess I'm confused because I just moved to mobile share(haven't received a new bill yet) and it seems like we only have 1 plan with 2 phones on it. So if we upgrade that plan, does that mean I can only upgrade one phone? And if I can upgrade more than 1 phone, do I have to do it at the same time? or can I upgrade months later and get the subsidized price? Thanks for any clarification!