On KDE Connect "unknown number" calls are translated into "nombre inconnu" calls which is not a relevant to say that in french. "numéro inconnu" would be a better translation https://invent.kde.org/network/kdeconnect-kde/-/blob/master/po/fr/kdeconnect-plugins.po?ref_type=heads#L489
Hello. Thanks for reporting this FR translation issue. The mentioned issue is located in kdeconnect-plugins.po file. String fixed as proposed and change committed. Regards. Xavier Note: in kdeconnect-kded.po: the same string exists but is marked as obsolete : messages/kdeconnect-kde/kdeconnect-kded.po:#~ msgstr "nombre inconnu"