Docomo SO-51A, Instruction Manual, Page: 230 / 262

228 Appendix
Operations are
not possible
when tapping or
pressing keys
･
Check if the power is turned off.
→ P.43
･
Check if you activate the screen
lock.
→ P.191
The screen reacts
slowly when you
tap or press the
keys
･
When large amount of data is
saved in the terminal or
transferring large-size data
between the terminal and
microSD card, the reactions on
the screen may be delayed.
The docomo
nano UIM card is
not recognized
･
Check if the docomo nano UIM
card is attached in the right
direction.
→ P.34
The clock is not
on time
･
The clock time may become
wrong when the power is turned
on for a long time. Check if
"Automatic date & time",
"Automatic time zone" and
"Automatic 24-hour format" are
ON and turn the power off and
on in a place with strong radio
wave conditions.
→ P.43 , P.204
Phenomenon Cause and handling
The terminal
operation is
unstable
･
Instability may be caused by
applications that you installed
after purchasing the terminal. If
the symptom is improved when
you boot the terminal in safe
mode (near default state),
uninstalling the installed
application may improve the
symptom.
To boot the terminal in safe
mode, press and hold the power
key for at least 3 second with the
terminal OFF until docomo logo
appears, and then press and hold
the volume down key for a while.
When the power is turned on,
press and hold the power key for
at least 1 second
u
Touch and
hold [Power off]
u
Tap [OK] to
restart the terminal in Safe mode.
When safe mode is booted, "Safe
mode" is displayed at the lower
left of the screen.
To exit the safe mode, turn
power OFF and then ON.
* Back up necessary data before
using safe mode.
* Some applications or widgets
may not be shown.
* Safe mode is not a normal
active state. To use ordinarily, exit
from the safe mode.
Phenomenon Cause and handling