Hmm. A little more clarification needed here.. and maybe my situation is different than the one you're responding too. But a while back I made sure my wife's and my two lines (of a Family Plan - Mobile Shared) were such that every year, one of the two phones' 2year contract ends. My wife is never interested in the newest hottest phones -- so "I" always have a fully Subsidized upgrade path for a new iPhone each year. This is the year that I used HERS.. NOW.. when I 'get' the phone from UPS on the 25th.. And begin the activation process.. I don't want her 5S to cease from working for even a minute.. How do I activate the new phone to MY number? I've learned a while ago - it's still better to use any NEWER Sim card that arrives with your new phone..
Anyone with a refresher course on this for me? Thanks..