Multi-language Unicode messaging

A standard text message using the GSM alphabet can contain up to 160 characters (140 bytes). However, if you want to send a message that does not use the GSM alphabet (e.g. Chinese or Arabic), the message must be sent as Unicode.

An SMS message sent using Unicode characters is limited to a maximum of 70 characters. To send a message as Unicode, the Unicode parameter must be set to 1.

If this parameter is set, the message text must be in hex format. We expect UCS-2 (Big Endian) character set.

Values set are:




Off – Default status


On – Delivers the text as two-byte Unicode

You can view the Parameters list page to see the name of the parameter for the API you are using.

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