Appendix
58
Troubleshooting
Before you assume that the product is malfunctioning,
check the following:
Symptom
What you should check
Page
Cannot turn on
power.
Is the internal battery charged?
P. 14
Is
F
(Power button) pressed
and held until the incoming light
turns on?
P. 15
Cannot charge
the product
Is the charging equipment
connected correctly?
P. 14
Is the temperature of the product
or battery high or low? Charging
may stop due to the temperature
of the product.
P. 14
Is the specified accessory
(adapter etc.) used for charging?
P. 14
Cannot operate/
The screen
freezes/Cannot
turn off power.
Press and hold
F
(Power button)
for at least 11 seconds to force
shutdown and restart.
P. 16
The power goes
off.
Is the internal battery fully
charged?
P. 14
The power is
going off while the
activation logo is
displaying.
Is the internal battery fully
charged?
P. 14
Cannot make
calls.
Is the power turned on?
P. 15
Is your au Nano IC Card 04
inserted?
P. 10
Symptom
What you should check
Page
Cannot receive
calls.
Is signal strong enough?
P. 20
Is the product out of the service
area?
P. 20
Is the power turned on?
P. 15
Is your au Nano IC Card 04
inserted?
P. 10
" " (out of
service area)
appears.
Is the product out of the service
area or in an area where the signal
is weak?
P. 20
Is the built-in antenna covered
with finger etc.?
P. 8
Is a card other than au Nano IC
Card 04 inserted?
P. 10
Cannot operate
button/touch
panel.
Is the power turned on?
P. 15
Turn off the power and then turn it
on again.
P. 15
" " appears.
Is your au Nano IC Card 04
inserted?
P. 10
A message such
as charge the
battery appears.
The battery is almost dead.
P. 14
Battery usage
time is short.
Is the product fully charged?
• Charge the product until the red
charging light goes off.
P. 14
Is the internal battery end-of-life?
P. 34
Is the product left in the place for
a long period where " " (out of
service area) appears?
P. 20
End/Stop the applications or
functions which are not used.
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