I have lost my mobile. How can i track the mobile which i have lost?

Call Police dear

Every mobile has IMEI number, if your phone is ever used on any operator then your phone will send your IMEI number to that operator.

So, file FIR and see IMEI number of your phone on its bill or its box, get help of Police to recover it.

once a mobile phone is lost its difficult to trace dude..unless u have any software...

It's practcally not possible unless u have software embidded in your phone..nor the police can help