I'm not eligible for a upgrade so I can't get the new iPhone unless I use someone else's on my plan. The problem is my sister wants my phone and I want to use her husband's upgrade but I'm not sure how to do it since he won't be able to use the microsim in his phone and his wife wants mine. Sorry it's so confusing but is there anyway I can sell her my phone, get her a new micro sim, use his upgrade and get him a new full size sim? Or should I just wait until Feb and use my own upgrade?