Don't buy stolen things

Several days ago, as my friend was travelling in a tram, two or three Gypsy women raided through it and her cellular phone disappeared from her bag. Usually in such cases people rush to blame the victim ("Why didn't you look after your things?"), so let me mention that pickpockets know their job well and, besides, my friend was a bit out of touch with the surrounding because she was just returning from a funeral.
The phone had been bought via monthly payments, so my friend for a couple of months will continue to pay for a device she no longer owns. However, she is not a material person and easily got over this. She regrets only the digital photos she had made, about 40 files that were stored only in the phone. "They stole my moments," she complained to me.
The police apparently aren't in a hurry to do anything. They said, "Cellular phones are often found but it takes a long time." As far as I know, the mode of operation of a cellular phone allows it to be located within hours.
I don't want to muse now about these nasty Gypsy thieves who make a living by preying on hard-working people too poor to afford a car. They are miserable creatures, how good that we weren't born in one of their families to grow up like them. Neither am I going to rant about our police. We all know that it isn't there to help us. I am now thinking of the white, educated, law-abiding Bulgarians who buy a second-hand phone without much thought about its origin and then brag about the good deal. These people are the reason why cellular phones are stolen. If pickpockets couldn't sell so easily what they steal, they would pick only a few cellular phones to supply themselves and their family members.
So my appeal is: Don't buy a second-hand cellular phone unless you know and trust its former owner. In countries like Bulgaria, there is much chance for the phones offered for sale to be stolen. The same holds true for second-hand computers, car radios, CD players and many other devices.