So I received my 6+ this morning and in doing so, I switched the SIM card from my 5s to my 6+. I have no service on the 5s any longer, as it is a non-active sim, tho I still get wifi on the phone however. Now the strange thing is... Any time I get a phone call, my 6 and my 5s both ring. If I answer one, the other one stops ringing as tho I answered it. I would expect it to do the same with messages (especially iMessage due to the wifi being on on the 5s) but it doesn't. I don't receive any texts on the 5s, yet anytime I get a call on my 6 the 5s is ringing right along with it!! It's rather annoying.. Has anybody else experienced this phenomena? If so (and even if you haven't) does anybody have a fix for this?