140
Appendix/Index
Operating terminal
Trouble
Check and remedy
Become hot
while operating/
charging.
• While operating or charging, or if you operate
applications or watch TV (Fullseg/1Seg) for a
long time while charging, the terminal or adapter
may become hot. There is no operation problems
and you can continue to use it.
The operation time
is short.
• Is the terminal left for a long time out of service
area? Staying outside of the service area may
consume much power to search available radio
waves for communication.
• The operating time of the internal battery varies
depending on the operating environment and the
secular degradation of the internal battery.
• The internal battery is a consumable accessory.
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.
No operation is
performed even
when tapping the
touch screen.
• Is the screen locked? Unlock the screen by
pressing [Power/Screen lock key]/
/ [Home
The touch screen
reacts slowly when
a screen is tapped.
• It may be occurred when large amount of data
is saved in the terminal or transferring large-size
data 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
UIM card is not
recognized.
• Is the docomo nano UIM card installed with a
correct direction? → P.23
Trouble
Check and remedy
Time is incorrect.
• It may be occurred if the terminal keeps turned on
for a long time.
Check if "Automatic date and time" is set to ON,
and turn on the terminal at places where signal is
strong. → P.124
Terminal becomes
unstable.
• It may be caused by applications installed to the
terminal 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 application.
- To start Safe mode
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 enabled" →
"RESTART NOW".
- For using Safe mode, back-up the required data
beforehand.
- Note that widget you created may be removed.
- Safe Mode is not normal activation. Usually exit
Safe Mode and then use the terminal.
Terminal reacts
slowly/Behaviors
become unstable/
Some of the
program cannot
activate.
• Confirm the internal memory usage of the terminal
and obtain memory by ending some activated
programs. → P.113
Data is not
displayed properly/
Cannot operate
the touch screen
properly.
• Turn off and on the power. If it does not solve the
problem, trying "Factory data reset" (P.123) may
improve the symptoms. Note that the operation
erases all data saved on the terminal. Make sure
to back up necessary data beforehand.
