How to make a phone call and send an SMS (text messaging method) from your travel destination
+ - Country code - Phone number without"0" at the beginning
Example: Calling from your travel destination to Japan number "03-1234-XXXX"
+ 81 (country code) -3 (area code) -1234XXXX (number of the person you are calling)
Example: Calling from the US to US number "123-456-XXXX"
+ 1 (country code) -123 (area code) -456XXXX (number of the person you are calling)
SMS (text messages) can be used the same way as in Japan.
Example : To send to XXX-YYYY-YYYY dial "XXXYYYYYYYY" and press send.
If you do not wish to use data communication abroad, please set your data roaming setting to "OFF" before traveling.
For "au Overseas Unlimited," data communication will not start until you tap [Start Usage] via the "au Overseas Unlimited App" (which you can pre-register for in Japan) or through the browser at your destination.
However, for "Overseas Double Rate," if your device's data roaming setting is "ON," data communication will automatically start at your destination. To avoid unexpected charges, we recommend checking and setting this in advance.
[Procedure]
Settings → Mobile Data → Mobile Data Options → Turn OFF Data Roaming