From the Sony Tablet help guide: "You can set whether to receive location information via GPS satellites or wireless networks. 1. Tap [ Apps] - [ Settings] - [ Location & security]. 2. To enable reception of location information via wireless networks, tap [Use wireless networks]. To enable reception of location information via GPS satellites, tap [Use GPS satellites]. A check mark is put in the box for that setting. Note: Move your tablet device as little as possible in an area with a clear view of the sky until the present location is displayed by the GPS function. The present location can be displayed quicker when stationary than while moving. If the present location is not displayed or if the wrong location is displayed, move to an area with a clear view of the sky."
This may help Sony Tablet S Navigation