Facebook messenger calls, show only short name
You could try setting the Messages display name and see if Facebook Messenger respects it; however, I'm not sure if this will help.


Open Settings and go to “Mail, Contacts, Calendars” then scroll down to the ‘Contacts’ section and go back to “Short Name”, then
choose one of the following options:

First Name &amp; Last Initial – good middle ground choice
First Initial &amp; Last Name Only
First Name Only – the annoying default
Last Name Only – OK if you’re on a football team
Optionally, set “Prefer Nicknames” to your preference





Go back to Messages and view a thread to see the change.