NTT docomo P-06C STYLE Series Instruction Manual page 97

The usable time of the battery is short.
...Make sure not to leave the FOMA terminal out-of-service-area for
a long time. If your FOMA terminal is left out-of-service area, it
searches for radio waves to establish communications, consuming
more power.
...The usable time of the battery pack varies depending on the usage
environment or its remaining life.
...Battery packs are consumables. The usable time slightly shortens
each time you charge the battery. If the usable time becomes
extremely short as compared with the default state even if fully
charged, purchase the specifi ed battery pack.
The power of the FOMA terminal shuts down and restarts.
...If the terminal of the battery pack is stained, the connection might
deteriorate to shut down the power. Wipe the battery terminal with
a dry cotton swab, etc.
Pressing keys is disabled.
...Make sure Dial Lock is deactivated. (See page 47)
...Make sure Keypad Lock is deactivated. (See page 48)
...Make sure Side Key Guard is set to "OFF".
The UIM is not recognized.
...Make sure you insert the UIM in the correct direction. (See page 23)
The clock does not show the correct time.
...The clock may not show the correct time when the power has been
kept on for a prolonged period of time. Check whether "Auto time
adjust" and "Auto time difference" of "Set main time" have been set
to "Auto" and then, move to a location with good signal reception,
turn off the power of FOMA terminal and then back on.
Call
Cannot make a call by pressing numeric keys.
...Make sure Restrict Dialing is deactivated.
...Make sure the lock for "Keypad dial" in Original Lock is released.
(See page 48)
...Make sure Dial Lock is deactivated. (See page 47)
...Make sure Self Mode is deactivated.
Cannot talk.
(" " does not disappear even if you move to another place.
You cannot make or receive a call, though the radio wave
conditions are not bad.)
...Turn off and on the FOMA terminal, or remove and attach/insert the
battery pack or UIM. (See page 23, page 26)
...Depending on the characteristics of the radio waves, you may not
be able to make or receive a call even if the FOMA terminal is
"within service area" or " " is displayed for a radio wave
condition. Move to another place and redial.
...Make sure the call restrictions such as Call Rejection, Call
Acceptance, etc. are deactivated.
...Depending on the radio wave congestion state, calls and mail
messages may be congested and hard to be connected in crowded
places. In that case, the message "Please wait" or "Please wait
for a while" is displayed and a busy tone sounds. Move to another
place or wait for a while, and then redial.
Osaifu-Keitai
Cannot use Osaifu-Keitai function.
...If you remove the battery pack or activate Omakase Lock, the IC
card function becomes unavailable regardless of the setting of IC
Card Lock. (See page 23, page 48)
...Make sure IC Card Lock is deactivated. (See page 47)
...Make sure you place the f mark on the FOMA terminal over the
scanning device. (See page 84)
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