Wrong Latitude / Longitude

Hi, was tested sending Preset message with GPS location included to recepients GSM, mail and mapshare. Message to all  were delivered promptly, but with wrong GPS location (somewhere in the middle of Pacific). The same (wrong) location was also sent by Explorer+ a week ago.

Any idea why this happens and how to avoid this?

Text from received email: "XY sent this message from: Lat 34.026611 Lon 173.244717."