207
Appendix
Handset operation
Trouble Check items
Becomes hot while
operating/charging
y
The handset, internal battery or adapter
may become warm while you are operating
or charging the handset, when you use
video call, watch videos, etc. for a long time
while charging, etc. There is no operational
problem.
☞
P. 39 “Cautions while
charging”
Trouble Check items
Battery life is short
y
Make sure the handset is not left for a long
time outside the service area. Outside the
service area, since radio waves are
searched to make communication available,
more electric power than usual is used.
When the handset keeps out of service,
turn power off or set Airplane mode.
☞
P. 42 “Turning power off” , P. 153
“Network & Internet”
y
The battery life depends on the usage
environment and deterioration level.
☞
P. 222 “Main specifications”
y
The internal battery is a consumable
product. Battery life per charge is gradually
reduced every time the battery is charged.
Contact the number listed in “Repairs” (in
Japanese only) on the last page or a repair
counter that DOCOMO specifies if the
battery life becomes extremely shorter than
at the time of purchase even after fully
charged.
☞
P. 40 “Internal battery usable
life”
y
End apps which are not in use.
y
Set wireless functions which are not in use
to OFF.
☞
P. 153 “Wi-Fi” , P. 190 “Using
Bluetooth function”
y
Conserve the battery power by using
Battery Saver.
☞
P. 161 “Battery Saver”
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