SMS Global Coverage
Japan
The key details for mobile messaging in Japan are below. We have full one-way reach to all mobile operators in this region. For a datasheet that contains more information, such as best practices and the proportion of subscribers on each mobile operator, please contact us.
See help for an explanation of each field.
Region | Eastern Asia |
Dialing Code | 81 |
1-way | Yes |
2-way | Long Code Only |
2-way Setup Time | 3 |
Primary Character Encoding | SHIFTJIS / UCS-2 |
Max Characters for Single-part message | 70* |
Multi-part messages | Yes* |
Delivery Receipts | Yes |
Mobile Number Portability | Yes |
Alphanumeric Originator maintained on 1-way | No, variable |
Alphanumeric Originator Registration required | Alphanumeric not supported |
Short Code maintained on 1-way | Overwritten |
Local Long Code maintained on 1-way | Overwritten |
International Long Code maintained on 1-way | Overwritten |
* Notes | All message Originators will be overwritten by a local Long Code (NTT DOCOMO and KDDI (au)) or Short Code (SoftBank) on OpenMarket's standard 1-way product. Multipart messages up to 332 bytes (157 UCS-2 chars, 315 GSM7 chars) are supported on NTT DoCoMo and Softbank and can be supported on KDDI (au) if required. |
Guidance / Restrictions | Campaigns need to be registered, Opt in required for marketing SMS, No spam. Opt out procedure advised. Networks generally block messages with URL's or phone numbers within the message. AU/KDDI subscribers can request to have this block removed from their acounts |