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Safety Precautions
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Wi-Fi (Wireless LAN)
A wireless LAN (WLAN) exchanges information using radio
waves, and allows you to freely establish a LAN connection
if you are within an area where radio waves reach. However,
communication without appropriate security settings may
allow communication to be intercepted by malicious parties.
It is recommended to make security settings, and is at your
discretion.
SoftBank is not responsible for any information which may be
leaked during communication via wireless LAN.
Frequency Bands
Frequency bands used by handset wireless LAN function are as
below.
2.4DS/OF4
Frequency band is 2.4 GHz. DS-SS and OFDM modulation.
Maximum interference range of about 40 m.
Utilizes 2,400 MHz to 2,483.5 MHz band with mobile device
bandwidth differentiation.
Usable channels depend on the country.
Before using aboard an aircraft, check with the airline
beforehand.
Locations where usable while abroad may be restricted
depending on the country. Be sure to check laws and other
conditions of the country/region regarding frequencies usable
there.
When Using Wi-Fi (Wireless LAN)
・Handset Wi-Fi (wireless LAN) function is certified as
conforming with Japanese domestic standards, FCC
standards, and EC directives. Use of handset Wi-Fi (wireless
LAN) function is restricted in some countries/regions. Be
sure to check laws and other conditions of the country/
region.
・Do not use Wi-Fi where there is an electromagnetic field
such as near electrical appliances or AV/OA devices.
・Magnetic fields and electrical noise may affect
communication (especially when using a microwave oven).
・It may interfere with reception if near a TV, radio, etc., and
the TV screen may become unviewable.
・If multiple Wi-Fi (wireless LAN) access points are nearby
using neighboring channels, handset may not search for
access points correctly.
・Handset cannot be used even aboard an aircraft that
supports Wi-Fi (wireless LAN). Place handset in Airplane
mode and power off. Note that it may be usable with some
airlines. Contact your airline for information.
Usage Precautions 2.4 GHz Devices
WLAN devices use the same frequency band used by household
appliances such as microwave ovens and industrial, scientific,
and medical equipment, other same-type radio stations,
(licensed) premises radio stations used to identify mobile
units used in manufacturing lines, (unlicensed) specified low-
power radio stations, and (licensed) amateur radio stations
(below, "other radio stations").
1. Before using handset, check that other radio stations are
not in use nearby.
2. If interference should occur with other radio stations,
change handset location, or stop operation of the device (stop
emission of radio waves).
3. If unsure how to proceed, contact a SoftBank Shop or
Customer Service .
Usage Precautions for 5 GHz Devices
Using wireless LAN in handset at 5.2/5.3 GHz outside is
prohibited by the Radio Law.
Frequency bands and channel numbers available in Japan are as
follows.
・5.2 GHz band: 5,180 to 5,240 MHz (36, 38, 40, 42, 44, 46,
48 ch)
・5.3 GHz band: 5,260 to 5,320 MHz (52, 54, 56, 58, 60, 62,
64 ch)
・5.6 GHz band: 5,500 to 5,700 MHz (100, 102, 104, 106,
108, 110, 112, 116, 118, 120, 122, 124, 126, 128, 132,
134, 136, 140 ch)