"Phim Split Vietsub" received widespread critical acclaim upon its release. The film holds a 73% approval rating on Rotten Tomatoes, with many critics praising James McAvoy's performance and the film's tense atmosphere.

The impact of "Phim Split Vietsub" extends beyond its critical and commercial success. The film has sparked important conversations about mental health, specifically dissociative identity disorder. By bringing attention to this often-misunderstood condition, the film has helped to raise awareness and promote empathy.

Furthermore, the film's influence can be seen in the numerous films and TV shows that have followed in its footsteps, exploring similar themes of psychological horror and complex characters.