I can confirm that there is no GPS, no 3G modem, and no antenna for either in the WiFi eDGe. Sorry. There is an accelerometer which we are not using, but that is mostly because we could not come up with a reliable way to use it to reorient the screens on a device with two screens that might be back to back, and might be getting used right side up or upside down. We almost got there, but like I said...not reliable enough. Maybe one of you clever folks can find a good use for it.