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Trouble
The operation time
• Is the terminal left out of service area for a
provided by the
long time? Out of service area, a lot of power is
battery is short
consumed to search available radio waves.
• The operation time provided by the internal
battery varies by the operating environment and
battery deterioration.
• The internal battery is a consumable part. The
usage duration of the battery per 1 charge
decreases gradually each time the battery is
recharged. When the operation time is too short
even the terminal is fully charged, contact the
phone number given in "Repairs" on the last page
(In Japanese only) or DOCOMO-specified repair
office.
• Are multiple apps activated? Exit from all apps. →
P.44
• When not using Wi-Fi or Bluetooth function, turn
the setting OFF. → P.99, P.124
No operation is
• Is the screen locked? Unlock the screen with
performed even
[Power/screen lock key]/
when tapping the
P.27, P.111
touch screen
The touch screen
• It may occur when large amount of data is saved
reacts slowly when
in the terminal or transferring large-size data
a screen is tapped
between the terminal and microSD card.
• Do you attach a protection sheet on the terminal?
The operations may be impeded by the protection
sheet.
The docomo nano
• Is the docomo nano UIM card installed with a
UIM card is not
correct direction? → P.22
recognized
The clock is not on
• When the terminal is turned ON for a long time,
time
the clock may go wrong.
Make sure that "Automatic date and time" is set
and turn on the terminal at places where signal is
strong. → P.120
Check and remedy
[Home key]. →
Trouble
Terminal operation
• It may be caused by apps installed to the terminal
is unstable
after purchase. If problems improve when you
start in Safe mode (a function to activate the
terminal in a mode similar to default), problems
may be improved by uninstalling the app.
- To start Safe mode
- For using Safe mode, back-up necessary data
- Note that apps or widgets may be removed.
- Safe Mode is not normal activation. Usually exit
Terminal reacts
• Confirm the internal memory usage of the terminal
slowly/Behaviors
and obtain memory by ending some activated
become unstable/
programs. → P.108
Some programs
cannot activate
Data is not
• Turn off and on the power. If it does not solve the
displayed properly/
problem, trying "Factory data reset" (P.120) may
Cannot operate
improve the symptoms. Note that the operation
the touch screen
erases all data saved on the terminal. Make sure
properly
to back up necessary data beforehand.
App does not work
• Are there any apps being disabled? Enable the
properly (cannot
disabled apps and try again. → P.109
activate, errors
occur frequently,
etc.)
134
Check and remedy
Press [Power/Screen lock key] for 2 seconds
or more when power is OFF, and after docomo
logo disappears, continue to press volume
DOWN key.
* When Safe mode starts, "Safe mode" appears
on the lower left corner of the screen.
* To terminate Safe mode, open notification
panel and tap "Safe mode turned on" →
"RESTART NOW".
beforehand.
Safe Mode and then use the terminal.
Appendix/Index
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