if youre using apps that lets you download maps for offline usage, pwede.
i have tried different map applications like OMaps and Maps Offline and they all work fine. nagkakatalo lang sa resource usage.
if you prefer android devices, just download the free app in Play Store - open the app - look for options for stored maps - download the preferred country/location - turn off your wifi and data and voila, you got yourself a GPS device that can pinpoint your location kahit di ka connected sa net. the accuracy is still an issue pero kung libre mo naman nakuha, why complain di ba?