66
Appendix
Troubleshooting
Before■you■assume■that■this■product■is■malfunctioning,■
check■the■following:
Symptom
Check■item
Page
Cannot turn on
power.
Is the built-in battery charged?
P.41
Do you press and hold power
key?
P.43
Cannot charge the
battery.
Is the AC adapter securely plugged
into an outlet?
P.41
Battery usage time
is short.
Do you use this product more in the
places without signal reception
(out of service)?
-
Is the built-in battery running out?
P.27
Cannot operate
touch panel as
intended.
Are you operating with gloved
hands?
P.46
Make sure you are not operating
with your finger tip or there is no
foreign object in the middle of the
panel.
P.46
Cannot operate the
keys/touch panel.
Is the screen lock set?
-
Turn off the power and turn it on
again.
P.43
Screen response
is slow when you
tap on the screen/
press the keys.
Screen response may slow down
when a large amount of data
is stored in this product being
transmitted between this product
and a microSD memory card.
-
"No SIM card" is
displayed.
Is an au Micro IC Card (LTE)
inserted?
P.38
Symptom
Check■item
Page
Cannot make calls. Is an au Micro IC Card (LTE)
inserted?
P.38
Did you enter the wrong phone
number?
(Did you enter the phone number
starting with an area code?)
P.57
Is "Airplane mode" set?
P.63
Is "Network mode" wrong?
-
Cannot receive
calls.
Is reception good enough?
P.51
Are you out of service area?
P.51
Is "Airplane mode" set?
P.63
Is "Network mode" wrong?
-
Is Call forwarding service set?
P.63
Display is dark.
Is "Brightness" set to dark?
P.63
Cannot hear the
other party.
Is the earpiece volume too low?
P.57
Do you bring earpiece close to your
ear? Put the earpiece close to your
ear hold.
P.36
Cannot use Osaifu-
Keitai
®
.
Has the battery run out?
P.41
Is "NFC/Osaifu-Keitai lock" set?
-
Do you hold this product so that
the mark area is placed over the
reader?
P.36
Cannot recognize
a microSD memory
card.
Is a microSD memory card inserted
properly?
P.61
Is the USB storage unmounted?
P.62
If the symptom does not improve after checking the above
items, contact the below au website or au customer support.
http://www.au.kddi.com/support/mobile/trouble/repair