[cdirkx]

It does? At least in group chats I have hundreds of people not in my contact list but they display as "0123456789 ~Steven".

[TrianguloY]

That's why I said 'on the list' referring to the main screen (where you can see the list of all active chats). As far as I know the nickname is shown on messages on a group, next to the number, and on the info screen (of both a private and a group chat).

[tsimionescu]

Isn't that pulled from the agenda of other people in the group?

[pta2002]

That's the name you set for yourself