After Returning To Japan - NTT docomo F-05J arrows Be Instruction Manual

Caller ID notification request service (charges apply) : Play
the guidance of requesting a caller IC notification when
receiving a call with an unknown number.
Incoming call notification while roaming (charges apply) :
→P176
Roaming guidance (charges apply) : →P176
Voicemail service (charges apply) : Take messages of
callers when you are in a place where the radio wave
cannot reach or when you turn off the power.
(Subscription is required)
Call forwarding service (charges apply) : Forward
incoming calls to another mobile phone etc. that is
registered in advance. (Subscription is required)
3
Operate according to the onscreen instructions
or voice guidance

After returning to Japan

When you return to Japan, the terminal is connected to
DOCOMO network automatically. If connection is failed,
perform the following operations.
･
Set [Network Mode] of [Cellular networks] to [4G/3G/
GSM(Auto)].→P174
･
Set [Network operators] in [Cellular networks] to [Select
automatically].→P174
177
International roaming