NTT docomo Optimus LTE L-01D Instruction Manual page 163

Location Information Services
Mobile networks, Wi-Fi and GPS methods are available
to obtain current locations. With Wi-Fi current locations
can be speedily determined, but accuracy is lacking.
If GPS is used, it takes more time, but accurate
positioning can be obtained. When determining current
locations, activate both Wi-Fi and GPS to utilize both of
their advantages.
What is GPS
• GPS is a function that receives signals from GPS
satellites for obtaining the location of the terminal.
• It cannot be used as navigation devices for aircraft,
vehicles and people or as a high-precision GPS
for measurement. Please note that DOCOMO
shall not bear responsibility for damages which
are pure economic losses which are generated
by opportunities missed to confirm positioning
results and missed communications due to
external factors (including exhausted batteries)
such as malfunctions, improper operations and
power outages of the terminal if it is used for these
purposes or even if it is not used for these purposes.
• Since GPS is governed by the United States
Department of Defense, the GPS signals might
be controlled (degradation of accuracy, signal
blackouts, etc.) according to national security
reasons of the US. Also even if positioning is done
in the same locations and environments, identical
results may not be obtained due to the differences
in signal conditions caused by the locations of the
satellites.
• Since GPS uses signals from satellites, in the
following environments there are locations where
signals cannot be received or reception is poor.
Thus, the range of error of location information may
be over 300 m.
- In the midst of or underneath dense tree growth,
in areas lined with buildings or dense residential
areas
- Inside or underneath buildings
- Inside of underground tunnels, underground and
underwater
- Near high-voltage lines
- Inside of cars and trains
- In poor weather such as heavy rainfall and snow
- Inside of bags and boxes
- Hindrances (people and things) around the
terminal
- If the terminal is held with the hands covering up
the area around the screen, buttons, microphone
and speakers
• Please check the websites of the GPS service
provider and DOCOMO for news regarding the
usage of positioning provisions and current locations
notifications. Also using these functions may incur
charges.
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Application