Unhand me, my phone!

MY smartphone: friend or foe? That’s what I am wondering after watching the Korean movie called Unlocked on Netflix.

It’s about how a young woman in Seoul loses her phone on a bus only to have it picked up by a tech-savvy sadistic serial killer. He befriends her after planting spyware on her device that enables him to read her texts and notifications, listen to her calls and observe her through the phone camera.