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Troubleshooting
Symptom
What you should check
Page
Power is not turned
on even though
F
is
pressed.
Is the battery pack charged?
P. 33
Is the battery pack attached properly?
P. 30
Are the terminals of the battery pack durty?
P. 33
Is
F
pressed and hold?
P. 36
The power goes off.
Is the battery running out?
P. 33
The power is going
off while the activation
logo is displaying.
Is the battery running out?
P. 33
Cannot make calls.
Is the power turned on?
P. 36
Is your micro au IC-card inserted?
P. 32
Did you enter the correct phone number?
(Did you enter the phone number starting
with the area code?)
P. 57
Is " " selected after entering phone
number?
P. 57
Cannot receive calls.
Is signal strong enough?
P. 47
Is the product out of the service area?
P. 47
Is the power turned on?
P. 36
Is your micro au IC-card inserted?
P. 32
Is "Reject call" set?
－
(out of range)
appears.
Is the product out of the service area or in
an area where the signal is weak?
P. 47
Is the built-in antenna covered with finger
etc.?
P. 28
Cannot charge the
battery pack.
Is the charger connected correctly?
P. 34
Is the battery pack attached properly?
P. 30
Is the temperature of the product or battery
pack high or low? Charging may stop due
to the temperature of the product or battery
pack.
P. 33
Are the accessories (adapter, etc.)
specified by KDDI used to charge?
P. 34
Cannot operate key/
touch panel.
Is the power turned on?
P. 36
Turn off the power and then turn it on again.
P. 36
Symptom
What you should check
Page
Cannot operate touch
panel as intended.
Do you operate the touch panel properly?
P. 38
Turn off the power and then turn it on again.
P. 36
"auIC card (UIM) error"
appears.
Is your micro au IC-card inserted?
P. 32
A message such as
charge the battery
appears.
The battery is almost dead.
P. 33
The phone answers
automatically.
Is "Phone meno" set?
P. 60
Battery usage time is
short.
Is the battery pack fully charged?
• Charge the battery pack until the red
charging light goes off.
P. 33
Is the battery pack end-of-life?
P. 15
Is the product left in a place where (out
of range) appears for a long period?
P. 47
Home screen
→
M
→
[Manage apps]
→
[RUNNING]
→
Tap application or function
not used to end/stop.
－
Cannot connect to the
party and the phone
beeps even though a
call is made.
Is the product out of the service area or in
an area where the signal is weak?
P. 47
The line is extremely busy or the party is
calling. Retry later.
－
Display is dark.
Is the temperature of the product or battery
pack high? The display may become
dark according to the temperature of the
product.
P. 14
Display brightness is set to "dark" when the
e-saving mode is set.
P. 61
Cannot hear/Hard to
hear the other party.
Is the earpiece volume too low?
P. 57
Place your ear hole to the earpiece.
P. 28
The screen cannot be
operated by tapping
any keys.
Turn off the power and then turn it on again.
P. 36
Settings made for
specified contacts do
not work.
Is the caller ID notified? Incoming picture,
ring tone settings are not effective if the
caller does not notify the caller ID. Group
ring tone settings in Contacts is not
effective, either.
－