Some phones don't have the same dial commands so . It's called the IMEI (older phones might have a MEID) and it will be in your phones settings as well. The police can identify your phone by this number; I doubt they can use it to track it.
Top 24 Useful Tricks of iPhone and iPad Most People Don't Know
Hold 0 to Get Degree Icon If your topic is related to weather or chemistry, you may need this function to present “degree”. Hold the number zero for several seconds, and the degree icon will show above.