Sony Xperia Z4 Tablet, User Manual

Page: 190 / 206

188
Technical Conformity
Handset is certified as wireless equipment for low power
electric data communication based on the Radio Law. No
license is required for using handset as the wireless radio
station. However, disassembling/modifying handset may be
subject to penalty by law.
・Never use modified handset. Using modified handset is a
violation of the Radio Law.
・Handset is compliant with the technical standard
conformance of specified wireless equipment based on the
Radio Law, and as a proof of it, the "Technical Compliance
Mark
" appears on the electronic nameplate of handset.
To view the electronic nameplate, in Home Screen,
Settings About phone Legal information
Certificates .
The technical standard conformance certification etc. is
invalidated by removing the screws and altering the inside
of handset. Using handset with invalid technical standard
conformance certification etc. is a violation of the Radio
Law.
・Do not alter the basic software illegally. May be regarded as
software modification and repairs may be refused.
Bluetooth
®
/Wi-Fi (WLAN)
Frequencies
Frequency band used by handset Bluetooth
®
/Wi-Fi (WLAN)
functions are as follows:
2.4： Frequency band is 2400 MHz
FH/XX/DS/OF： Modulations are FH-SS, other modulation, DS-
SS, OFDM
4： Estimated range of radio frequency interference is up to
40 m
8： Estimated range of radio frequency interference is up to
80 m
：Utilizes 2,400 MHz to 2,483.5 MHz band
without mobile device bandwidth differentiation
・Available channels may vary by country.
・For use in an airplane, contact your airline.
Notes on Using Bluetooth
®
Devices
Handset operates on the same frequency band used by home
electric appliances such as microwave ovens, industrial,
scientific and medical equipment, premises radio stations
for identifying mobile units used in the manufacturing lines
of plants (radio stations requiring a license), specified low
power radio stations (radio stations requiring no license) and
amateur radio stations (hereinafter referred to as "another
station.")
・Before using handset Bluetooth
®
function, confirm that
premises radio stations, specified low power radios and
amateur radios are not in use nearby.
・In the event of handset causing harmful radio wave
interference with "another station," promptly change the
operating frequency or stop radio wave emission by turning
off the power, etc.
・For further questions, contact a SoftBank Shop or SoftBank
Customer Support .
Reception Interference Caused by Wi-Fi
(WLAN) Devices
Handset Bluetooth
®
function uses the same frequency band as
Wi-Fi (WLAN) devices. Using near Wi-Fi (WLAN) devices may
cause radio interference, low-communication speed, noise or
connection failure. In that case, take the following measures.
・Provide distance between Bluetooth
®
device and Wi-Fi
(WLAN) device. Required distance varies by device.
・If the problem persists, power off Bluetooth
®
device or Wi-
Fi (WLAN) device.