Appendix
Updating Software
You can update the product to the most recent software for optimal
performance and security improvement, and to get the latest
enhancements.
→
Home screen
[Apps]
A
→
[Software update]
[Check for update]
If there is an update, you can download and install it as needed.
Then follow the on-screen instructions.
◎
If
is displayed on the status bar, slide the status bar down,
tap the notification, and then follow the on-screen instructions.
◎
You can use other functions while software update is in
progress.
However, installation will be suspended temporarily for 10 days
after software update is notified if you are using other functions
while software update is in progress. Tap "Resume" to restart
installation and you can use other functions.
■
Notes on Software Update
•
Large-volume data communication occurs for operating system
updates. If you have a Wi-Fi
®
environment in your home, it is
recommended that you connect to the Wi-Fi
the software.
•
Whenever a software update is available, the information will be
announced on the au website, etc. for you. For details, contact an
au Style/au shop or Customer Center (call toll-free 157). In addition,
users of the product may receive a notice from au when software
update is necessary to improve the functionality of the product.
•
It is recommended that you back up data before updating the
software.
You need to restart the product to finish the software update.
•
•
If the software update has failed or stopped, perform it again.
•
A software update failure may disable the product. If this happens,
call Repair and Delivery Support Center.
•
Charge the battery adequately before performing the update. If the
battery level is low or if the battery runs low during the update, the
software update will fail.
Check the signal reception. The software update may fail in poor
•
reception areas.
•
The software update will not change data stored on the product
(contacts, mails, still pictures, music files, etc.) or the settings.
However, data may be affected by the update depending on the
condition of the product (malfunctioning, damaged, water seepage,
etc.).
•
While using the product overseas, a software update may not be
available.
What not to do during the software update:
•
Do not change locations.
→
→
[Simple Settings]
®
network to update
Troubleshooting
Before you assume that the product is malfunctioning, check
ん診断
使い方サポート
(Simple diagnosis) of "
* For UQ mobile users: download the "
from Google Play
™
.
■
かんたん診断
You can use
(Simple diagnosis) on "
ポート
(Usage support)" app for free.
•
You can also check the solution according to the diagnostic result.
使い方サポート
•
Download "
(Usage support)" app from:
h ttps://play.google.com/store/apps/details?id=com.kddi.
(
newsupport&hl=ja)
(Japanese)
診断
→
かんたん診断
* Tap [
(Diagnosis)]
[
ト
(Usage support)" app.
Problem
Suggestion/possible cause
Battery runs out
•
Avoid using the product in places where
fast
(out of service area) appears (
The internal battery has reached the end of
•
its life. Check the battery status (
•
The battery is not adequately charged
(
P. 16).
z
Disable functions you are not using (
•
Cannot make calls
A proper SIM card is not inserted (
•
Setting is required before using an eSIM.
•
Inquire with the provider of an eSIM for
making settings for adding an eSIM.
The phone number is incorrect or the area
•
code is missing (
•
Airplane mode is set (
•
The product is turned off (
Tap "Call" after entering the phone number
•
(
P. 22).
z
Cannot receive
Reception is poor (
•
calls
•
You are outside the service area (
•
Airplane mode is set (
The product is turned off (
•
A proper SIM card is not inserted (
•
•
Setting is required before using an eSIM.
Inquire with the provider of an eSIM for
making settings for adding an eSIM.
•
Turn the product back on.
The display is dim
If the temperature of the product becomes
•
high, the display will be dim automatically. If
the temperature becomes low, the display
will return to the normal brightness.
Cannot hear the
•
The call volume is too low (
other party
The earpiece is blocked with your ear.
•
Place the earpiece over your earhole.
microSD memory
•
The microSD memory card is not inserted
card is not
correctly (
recognized /
•
The microSD memory card is unmounted
Cannot find target
(
P. 15).
z
data
•
The data is saved in the internal memory.
Data can be saved in the internal memory
besides microSD memory cards.
Cannot operate
•
Turn off the product and then turn it back on.
the buttons or
The product is turned off (
•
touch panel
Cannot charge
The power plug of the specified charger (sold
•
the battery
separately) is not securely plugged into the
outlet (
P. 16).
z
Do not use an unspecified AC adapter (sold
•
separately). Be sure to use a specified one;
otherwise, the product cannot be charged or
may result in deterioration of the internal
battery.
•
The USB Type-C plug of the AC adapter (sold
separately) or the external connection jack of
the product may be stained. Clean the jack
with a dry and clean cloth and charge the
product again.
•
If the notification lamp is flashing red,
charging is suspended. Use a specified
charger to charge the product.
•
If the temperature of the product becomes
high, charging stops automatically. If the
temperature becomes low, charging will
resume.
かんた
(Usage support)" app.
使い方サポート
(Usage support)" app
使い方サ
使い方サポー
(Simple diagnosis)] of "
P. 20).
z
P. 16).
z
P. 20).
z
P. 14).
z
P. 22).
z
P. 21).
z
P. 17).
z
P. 20).
z
P. 20).
z
P. 21).
z
P. 17).
z
P. 14).
z
P. 22).
z
P. 15).
z
P. 17).
z
25
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