doesnt work for me also,
i turned on my email address (my imessage registered under my hotmail add) on both my iphone 6 plus and iphone 5, i wanna turn on iphone 5 in my iphone 6 plus, but the code never appear on my iphone 5, i can turned on iphone 6 plus on iphone 5 without any problem, anyway, my imac, macbook pro, two iphones and ipad, all are fine and can just turn on and the code will appear on the respective device, just this iphone 5 cannot receive passcode for my iphone 6 plus, any idea? 🙁