Can you find an iPhone that is not in service but was stolen, through i cloud?

My girlfriend's iPhone was stolen last night at a party, the phone is not currently in service meaning she only uses it through a Wi-Fi connection.
is there any way of us locating the phone through iCloud or will it not appear on the map due to the phone not being in service? If not is there anything we can do to find it

Added (1). But the phone is not in service, the bill has not been paid

If she has the find my phone app on there, you can track in using another apple device.