Sorry for my reply. I'm only F-Secure user (their home solutions).
Maybe it is good to add more information:
-- does your experience about Android, iOS smartphones? Or other smartphone OS? Or just mobile phone?
-- does your experience about F-Secure SAFE (F-Secure Mobile Security) solution under this device?
In general, if your device with still active network connection AND 'locate'-functionality was enabled -> should be possible to try use next steps for F-Secure SAFE (Android platform) as 'Finder'-feature: