NTT docomo Optimus LTE L-01D Instruction Manual page 202

● About date & time
If the "Automatic" checkbox in "Date & time" has been
marked, the time and time zone of the terminal's
clock will be automatically changed when information
about the local time and time zone is received from
the network of the overseas operator to which you
are connected.
• The automatic time/time zone setting may not work
properly depending on the overseas operator. In
that case, change the time zone manually.
• The timing of these changes varies depending on
the overseas operator.
• When configuring settings manually, unmark
"Automatic" and set items of "Set date", "Select
time zone" and "Set time".
• "Date & Time" → P120
200
Using Overseas
● About network services during international roaming
If you are subscribed to the network services, you
can use the Voice Mail Service, Call Forwarding
Service, and other network services overseas.
However, some network services are unavailable.
For the operating procedures, refer to "Mobile Phone
User's Guide [International Services]".
• To operate network services overseas, you need
to activate "Remote operation settings". For details
on the remote operation settings, refer to "Mobile
Phone User's Guide [International Services]".
• You can set an announcement to notify the
other party that you are using the international
roaming service when you receive a call during
international roaming, and set the incoming call
restriction function (Bar Incoming Call). For the
operating procedures, refer to "Mobile Phone
User's Guide [International Services]".
• When you use a network service overseas, the
international call charges in the country of use will
be incurred.
• The network services that are available overseas
may not be available depending on the overseas
operator to which you are connected.