Frustrating for years: you have many friends who live at single address and it is useful to have the same contact have multiple phone numbers from which text messages can be sent. It is smart to have a single contact with a single address with likely other shared characteristics. The classic example is you have a contact card for John Doe. On the same contact card you note that John Doe has a wife, Jane Smith. Unfortunately when John or Jane sends a message to your iPhone, iMessage says it's coming from John, regardless of which person sends the text. Not only that, when you click on the name of the person who sent the text, it will list all the phone numbers but it doesn't list who those numbers correspond to. Really you have to go to the contact card, look up the numbers and figure out which person has which number, and then go from there. It could easily be fixed by Apple, but somehow they haven't bothered to address this. Apple could include the name associated with the listed numbers very easily. My gut is that I have to do it the hard way: every person needs their own contact card, even if they are married or live together.