Other mistake: When the man requesting money hangs up on him, a dial tone follows. Cell phones don't have dial tones.
Buried (2010)
1 other mistake - chronological order
Directed by: Rodrigo Cortes
Starring: Ryan Reynolds, Samantha Mathis, Stephen Tobolowsky, Jose Luis Garcia Perez, Robert Paterson
Continuity mistake: Near the start of the film when Paul has just taken the rope off his hands, he removes the gag from around his neck. It then cuts to a shot of him undoing his shirt. When the shot returns to the side view, the gag is back round his neck. (00:07:40)
Dan Brenner: Your ransom video already has 47,000 hits on YouTube!