After Returning To Japan - Docomo Arrows X F-10D Instruction Manual

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] in [Mobile networks] to [LTE/3G/
GSM (Auto)]. P139
Set [Network operators] in [Mobile networks] to [Select
automatically]. P139
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International roaming