Information from: “An Atlas of Nigerian Languages” (111) . Roger Blench (2012)
20 percent certain, based on the evidence available
"The first edition of the Index of Nigerian Languages listed [Fali of Baissa] as extinct... Further investigations have established the status of [Fali of Baissa]: Spoken by a few individuals on the Falinga Plateau in southern Taraba State."
Falinga Plateau in southern Taraba State
Information from: “Ethnologue: Languages of the World, 16th Edition (2009)” . M. Paul Lewis · SIL International