Docomo User Manua User Manual page 21

Cautions on using Bluetooth devices
In the bandwidth used by this terminal, in addition to
home electric appliances such as a microwave oven and
industrial/scientific/medical devices, in-plant radio
stations used to identify mobile objects used in
production lines of a factory that require a license,
specified low power radio stations, or amateur radio
stations that do not require a license (hereafter "other
radio stations") can be in operation.
1. Before using the terminal, check whether "other radio
stations" are in operation in your neighborhood.
2. If radio wave interference occurs between the terminal
and "other radio stations", use the terminal in a
different location or "Turn the power OFF" to avoid the
radio wave interference.
3. For details, contact "General Inquiries" on the last page
of this manual.
Wireless LAN (WLAN)
Wireless LAN (WLAN) exchanges information using radio
waves, and allows you to freely establish LAN connection if
you are within an area where radio wave reaches. On the
other side, if you communicate without appropriate
security settings, communications may be intercepted or
hacked by malicious parties. It is recommended to make
necessary security settings on your judgement and
responsibility.
Wireless LAN
Do not use wireless LAN in a place where magnetized by
electric products, AV, OA equipment, etc. or where
electromagnetic wave is generated.
- If magnetism or electrostatic noise affects the terminal,
noise may be increased or communication may not be
available (especially when using microwave oven, it may
affect the terminal).
- Using near TV or radio may cause poor reception or TV
screen may be blurred.
- When multiple wireless LAN access points exist near the
terminal and they use the same channel, search may not
be performed correctly.
Frequency bands
Frequency band used for wireless LAN function of the
terminal is described on the battery pack recess in the
terminal. Label description are as follows.
a 2.4 : Radio equipment that uses the 2400 MHz band.
b DS : The modulation is the DS-SS method.
c OF : The modulation is the OFDM method.
d 4 : The expected interference distance is 40 m or shorter.
e
: All bandwidths between 2400 MHz and
2483.5 MHz are used, and the bandwidth used by mobile
object identification devices can be avoided.
Available channels vary by countries. To use WLAN
overseas, check the conditions such as available frequency,
regulation, etc. for the country.
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a b c d
e
Contents/Precautions