There are a lot of people all over the world whose mobile phone was stolen or lost. Because mobile phone is a device which has its own serial number called IMEI we can do something to increase possibility to find it or to prevent usage of it.
What to do if your phone is stolen or lost?
First of all the case should be reported to your mobile operator and to local police station. After this you can submit your phones IMEI number to global stolen phones database. A lot of people checks the database and can recognize your mobile before buying it from second hand (if it is submited in database). If you are not sure what phone model and manufacturer you have check here.