Symptom Check item
Battery life is
short
• Is the terminal left for a
long time under the state of
out of service area? Out of
service area, a lot of power
is consumed to search
available radio waves.
• The operation time of the
internal battery varies by
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 if the terminal is fully
charged, contact "Technical
Inquiries & Repairs" (in
Japanese only) on the back
cover of this manual or a repair
counter specied by DOCOMO.
Symptom Check item
Battery life is
short
• Are multiple applications
running. Exit from
applications you are not
using. → P75
• When you do not use
Wi-Fi
®
or Bluetooth
®
function, turn
the functions o.
→P173, P218
No reaction
when tapping
the touch
screen or
pressing the
keys
• Has the screen been
locked? → P190
• Is the power o?
→ P54
Slow reaction
when tapping
the touch
screen or
pressing the
keys
• It might occur if a large
amount of data is saved
in terminal or data with
extremely large size are
processed between this
terminal and microSD card.
The docomo
nano UIM
card is not
recognized
• Is the docomo nano UIM
card inserted in the right
direction?
→ P47
241
Appendix
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