Basically, this is a short documentary where a film student in the Netherlands lets a thief steal his smartphone and then he follows him around for severals weeks with a hidden app that he installed on the phone.
Below is a more in depth description from the actual creator of the video.
After my phone got stolen, I quickly realized just how much of my personal information and data the thief had instantly obtained. So, I let another phone get stolen. This time my phone was pre-programmed with spyware so I could keep tabs on the thief in order to get to know him. However, to what extent is it possible to truly get to know someone by going through the content of their phone? In the Netherlands, 300 police reports a week are filed for smartphone-theft. Besides losing your expensive device, a stranger has access to all of your photos, videos, e-mails, messages and contacts. Yet, what kind of person steals a phone? And where do stolen phones eventually end up? The short documentary ‘Find My Phone’ follows a stolen phone’s second life by means of using spyware. Although you’ll meet the person behind the theft up close and personal, the question remains: how well can you actually get to know someone when you base yourself on the information retrieved from their phone?