Whatever cautionary tale it tries to present, you cannot focus on that aspect - you keep getting distracted with how dumb the characters are. Not to mention, the lack of realism completely ruined the poor attempt of “social commentary”.

Female lead was dumb, the police were dumb, the friend was dumb, even the villain was dumb - don’t let people fool you into thinking it’s some tight cat and mouse chase with a brilliant killer who outsmarts everyone. It’s not hard to outsmart idiots. It does not make him a genius.

What’s good? Acting and editing, some directing choices. I liked the shots presenting the world from the eyes of the phone user, and then from the angle of the camera. We never really think about how much our phones see, as we assume the camera is off. So it’s creepy to see how much one could spy on us, if they had the access to the camera itself. Overall, there were many pretty shots, they knew how to make it visually interesting.

As a side note about the “social commentary” - I am so tired of this “phones are dangerous, be careful how you use them” topics. How about showing what the true issue is: lack of laws and procedures when the cyber crime happens, lack of police involvement when the crime is being reported, worst case - ignoring the reported crime because “nothing can be done”. Criticizing the government and police for the lack of protection of the citizens should be the focus, not “people use phones in irresponsible ways and depend on them too much”.

Overall, what a waste of time, even for Im Si Wan fans.