I have an iPhone 6, 5s and a iPad rMini. I got the iphone 6 configured how I like it and then did a backup on iTunes. I then wiped the 5s, which is a totally different number and restored it using the backup from the ip6. I was sitting on the couch and received a call. ALL three devices rang when person was calling my ip6. I answered the call on my 5s and was able to carry the conversation. I picked up the ip6 and was able to move the conversation to that. How is this possible?