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Appendix
Troubleshooting
Before■you■assume■that■the■product■is■malfunctioning,■
check■the■following:
Symptom
Check■item
Page
Cannot turn on
power.
Is the battery pack charged?
Is the battery pack attached
properly?
Are you pressing and holding
? P.43
Cannot charge
the battery.
Is the battery pack attached
properly?
Is the microUSB connector of the
AC adapter or microUSB cable firmly
inserted into the desktop holder?
Is the AC adapter securely plugged
into an outlet?
Battery usage
time is short.
Do you often use the product in
places where (out of service area)
is displayed?
-
Is the battery pack at the end of its
life?
Cannot operate
touch panel as
intended.
Are you operating with gloved
hands?
Make sure you are not operating
with the tip of a fingernail or there is
no foreign object on the panel.
Cannot operate
the keys/touch
panel.
Is the screen lock set?
Turn off the power and then turn it
on again.
Symptom
Check■item
Page
Screen response
is slow when
you tap on the
screen/press the
keys.
Screen response may be slowed
down when a large amount of data
is stored in the product or being
transmitted between the product
and a microSD memory card.
-
"No SIM card" is
displayed.
Is an au Micro IC Card (LTE)
inserted?
Cannot make
calls.
Is an au Micro IC Card (LTE)
inserted?
Did you enter the correct phone
number? (Did you enter the phone
number starting with the area
code?)
Is "Airplane mode" set?
Cannot receive
calls.
Is reception good enough?
Are you out of service area?
Is "Airplane mode" set?
Is Call forwarding service set?
Display is dark.
Is "Brightness" set to dark?
Cannot hear the
other party.
Is the earpiece volume too low?
Are you covering the earpiece with
your ear? Place your ear hole to the
earpiece.
Cannot use NFC/
Osaifu-Keitai
®
.
Has the battery run out?
Is "NFC/Osaifu-Keitai lock" set?
-
Do you hold the product so that the
FeliCa mark area is placed over the
reader?