Stolen samsung 4

i can't locate my device. I had it switched off before it was stolen.

Is there any way that i can "locate" my device with it turned off?

Can the person who stole it prevent me from locating it?

Hello Jared,
We are sorry to hear that. Kindly let us know the AVG program you have installed in your mobile device so that we will be able to assist you better?
Thank you.