Saint Petersburg's underground
I usually read books on my phone while I am commuting by underground train. Few years ago I was reading a book on my way home when the train stoped. At that moment one guy secured the doors while another one grabbed my phone. I was trying not to give it up, but he was stronger than me. After he took my cell phone the first guy closed the doors behind them. I had another phone, just for calls, so i called the police while the train was reaching the next station. I described those guys ant told that they are on the way up to an exit, where the police office exactly located. I was told to go back at the crime scene.
As soon as I got there I realized that the police do nothing to stop the robbers. They did not want a "dead end" case, so I was forced to took the statement back. I was hold there for a few hours before I gave up and was allowed to go home.
Now I am way more careful. I do chose the seat far from the doors and keep my phone the way it hard to grab while I am reading on it.