Factual error: Michael's wife meets with Longo in prison, and she has an iPhone. The trial was in 2003, 4 years before the introduction of the iPhone in 2007.
Factual error: Although this 2015 Norwegian disaster film is far superior to the many American disaster movies that it emulates, "The Wave" still suffers the most common error found in tsunami-themed disaster flicks: Crystal-clear flood waters. Of course, tsunami flood waters in particular are always inky-black with churning sediment and debris.
Factual error: In the end credits, when the listing of songs used in the film is rolling, the Kiss song is listed as "Detroit City Rock." Actually, the song title is "Detroit Rock City." (01:38:10)