I thought that "at least", the person would think twice in taking some else phone. Or at least the person would say, I've found it and I was going to give it back, here it is, take it.
Once this happened to a friend, the person gave it back.
I had a car break-in a couple of months ago, I went to the police and I have never received a feedback nor anyone moved an inch to try to help me to recover my items at that time, I did not even that this possibility would result in anything. Seems that nobody really cares about car break-in and about stolen phones on the region, this is why these activities are such on the rise. I can imagine that these people can steal like 10 phones a day and like 20 in a single concert easy. Basically, easy over 100 phones a month, that makes a 1 million USD business for them, these people are professionals.