Roman's Call is a myth subject in Myths and Legends in GTA IV.
Post Roman Bellic's untimely demise, players reported experiencing a strange phenomenon, these players claimed that Roman Bellic still calls Niko Bellic after his death. Initially this gives the impression of Roman's Ghost but upon analyzing facts and figures, it can be said that the myth is more of a technical glitch but some still find the explanation to be quite vague. Online forum users have a different opinion, according to them, Rockstar might've intentionally added the Easter egg, wanting players to be left in a pandemonium. However, keeping in view the track of these reports, Roman's call after his death may not be uncommon.