I notice when I open Messages, and type a contact's name, it shows the email and phone options of which to choice from for sending. If I choose an email address, it highlights green and good to go. But if I choose the phone number instead, highlights red and says that the number isn't registered. But I know they are registered. If I type a phone number (without any name), it will send, but curious why this is happening. Or what I can do to correct it. Not sure why it would show, for example 2 email addresses and 1 phone number under the person's name, but 1-2 seconds after displaying, the phone number option disappears and only shows the email addresses.