How can Android Device Manager (ADM) help to locate Android phone if Google account's password has been changed? I lost my Samsung Android phone. It was connected with Google account, but I changed my Google account password. Now I am not able to trace it through Android Device Manager (ADM). When I tried, it shows

No active devices
Before you can use Android Device Manager, you must have an active Android device.
Did you activate ADM with device administrators in the phone? If you do so, you could lock your device and no need to change the password.
But if someone is using your phone, they can reset your mobile with recovery mode. If they do so, you can't locate your mobile.
I think you should inform the police and they will looking for your mobile with the IMEI number of your mobile.