I'm in a conversation with someone on the SMS app. At the top of my conversation it shows the phone number (e.g. +19998887777) rather than the name of the contact. The contact exists with that exact phone number in my phone book. * Why shouldn't it show up their name at the top of the conversation? On the other hand, if I tap on the phone number I get suggested to create a new contact even though there is an existing contact that has that exact number. * I would expect to go to the existing contact. I'm using the 12-12 beta channel update. I'm not sure if this happened on previous updates. There is a similar issue described in bug 805205.

Wonderful! I found out that if the last name on a contact is missing the SMS app won't be able to match it! :)

I've found that the caller ID does not work either if the last name is not specified for a contact (bug 821298). Merge both bugs if needed.

For me should be a duplicate of 821298, due to the code requesting the 'Contact' is the same (so the bug is the same).

Agreed, this looks like the same bug. (even if I can't reproduce this)