I have an emergency. Lost Android
You have two ways to locate your device:


If your phones gets some cellular data, try going to Android Device Manager and remotely wipe it to make sure that nothing is traced.
File a police report. Sometimes, it can communicate between nearby towers and get some signal nearby. Tell them that you lost your phone and may suspect that your phone is taken already.


Hope this helps. It will give some helpful ideas when you lose a phone.