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When sending messages using the Sinch WhatsApp Business API, the required format for mobile phone numbers is to use the E.164 standard, that is, without the ‘0’ and without the ‘+’. For example, 447787123456.

 

Refer to the following WhatsApp article for more information: How to add an international phone number.

 

Learn more about the Sinch WhatsApp Business API. 

Version history
Last update:
‎04-20-2022 02:19 AM
Updated by: