Jacek Was Mugged Once...Apparently

From the horses mouth himself:

"by mistake instead of Stansted Express (that goes to Standsted airport) I took another local train and in this train a guy wanted to borrow mobile phone from me, because he claimed that his phone battery is gone. I had to explain to him (i.e. lie) that I have only special 3G phone and his SIM card would not work with my phone…. so he gave up… but I was wondering whether I would be openly attacked if I would just say “no!”. [...] I think that something should be done in this respect but for now the fact is that many people in UK are being mugged. I was one of them."

Now does anyone wanna explain to me how exactly he was mugged?

Source