■ Switch the GPS module on and off
To switch the GPS module on or off, press the power key for one second.
When you turn on the GPS module, it takes some time for the device to position
itself, depending on how long the GPS module has been turned off, and how well
it can receive the satellite signals. The start-up time is also longer if the battery
has been removed. In optimal conditions, start-up takes about one minute.