That's why I think it's BS.
Scenario;
Cop: Hey, here's his cell phone, I wonder if he was texting and driving.....hmmm....wonder if he has a hot girlfriend...... hmmm...no pics.....any videos?.......Hey!!! What's this!!!??? Damn...hmmm, hey, Mr. Paramedic, C'mere. Looky what I found on this phone...do me a favour m'kay? If anyone asks, you had the phone and you stumbled across this video when you were looking for some patient info...m'kay? So, being civic minded you told me about the video...but I'm not allowed to look at it without a warrant....so, based on your information I am going to apply for a warrant to look at the phone. mmmmm'kay?