Bug 885264 - [SMS/MMS] Ensure Carrier Unknown is displayed for manually entered recipients

1. If a phone number has carrier associated with it
    the output will be:

  type | carrier

2. If there is no carrier associated with the phone number
    the output will be:

  type | phonenumber

3. If for some reason a single contact has two phone numbers with
    the same type and the same carrier the output will be:

  type | phonenumber

4. If for some reason a single contact has no name and no carrier,
    the output will be:

  type

5. If for some reason a single contact has no name, no type
    and no carrier, the output will be nothing.


https://bugzilla.mozilla.org/show_bug.cgi?id=885264