Instruction manual

Appendix/Index
145
● The screen reacts slowly when a touch panel is
tapped/button is pressed.
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 terminal, etc. become hot while operating/
charging.
While operating or charging, or if you call or watch
1Seg, etc. for a long time while charging the battery,
the terminal, battery pack and adapter may become
hot. There is no problem about safety and continue to
use them.
● The terminal becomes hot while operating/charging.
If high temperature of the terminal continues,
charging or some functions may be disabled.
● The terminal becomes hot and the power turns OFF.
If you activate several applications, use camera,
connect to the Internet for a long time while charging
the battery, etc., temperature of the terminal may be
raised. When the terminal is in high temperature state
for a long time, charging or functions may stop or may
adjust brightness of the display. And the power of the
terminal may shut down to prevent you from burns.
● The display is dim.
• Have you changed any of the following settings?
- Brightness setting
→ P72
- Privacy view
→ P72
● The clock is not on time.
The clock time may become wrong while turning on
the power for a long time. Check that [Automatic date
& time] of Date & time is marked and then turn OFF
and ON the terminal in a place with good signal
conditions.
→ P90
● Terminal operation is unstable.
Instability may be caused by application that you
installed after purchasing the terminal. If the symptom
is improved when you boot the terminal in safe mode
(function for booting in near default state),
uninstalling the installed application may improve the
symptom.
Boot the terminal in safe mode by the following
method.
Press
X for 2 seconds or more with the power of
terminal OFF, and then press and hold
m from
when the note for maintaining waterproof
performance disappears until the Home screen
appears. When safe mode is booted, [Safe mode] is
displayed at the lower left of the Home screen. To exit
the safe mode, turn power OFF and then ON.
* Back up the necessary data before using safe mode.
* Some widgets that you created may be removed.
* Safe mode is not a normal booting state. To use ordinarily, exit
the safe mode.
● Operations are not possible when tapping the
screen.
• Do you operate with a gloved hand?
• Do you operate with a fingernail or foreign object
on the screen?
• Do you put a protective sheet or sticker on the
display? Depending on the protective sheet, you
cannot operate the terminal correctly.
• Do you operate with the touch panel wet or with
your finger wet with sweat or water?
• Do you operate under water?
• Touch the screen with your finger directly to
operate the terminal.
● Operations are not possible even though the power
is turned ON.
Is the PIN code entry screen displayed? → P78
● Operations are not available even though the screen
is unlocked.
Is the security lock set? → P79
● Operations are slower/Application operation is
unstable/Some applications are not activated.
Operation becomes unstable if the terminal is low on
memory. When a message indicating the memory
space is short is displayed, delete unnecessary
applications.
→ P76