Question: How do I use Amazon SNS or Amazon Pinpoint to send SMS messages to mobile phone numbers in China?

I want to use Amazon Simple Notification Service (Amazon SNS) or Amazon Pinpoint to send mobile text messages (SMS messages) to phone numbers in China.

Short descriptionTo send SMS messages in China, you must first preregister your message template for each type of message that you plan to send. Then, send your SMS messages with one of your preregistered templates.Important: If you don't meet these requirements, then the mobile phone carrier blocks the SMS messages that you send in China.

ResolutionCreate an SMS message template for each type of message that you plan to sendFor Amazon SNSFollow the best practices in Adding personalized content to message templates.Here's an example SMS template:SERVICE: Your one-time password is {{OTP}}. This code will expire in 10 minutes.Note: Replace SERVICE with the name of your service.For Amazon PinpointFollow the instructions in Creating SMS templates in the Amazon Pinpoint user guide.Note: For information about the size quotas for SMS messages, see Publishing to a mobile phone.Preregister your SMS message templates in ChinaNote: To preregister your SMS message template in China, you must open a support case in the AWS Management Console.For Amazon SNSFollow the instructions in Open an Amazon SNS SMS case. When you open your support case, make sure that you complete the following steps:Under Case details, for Limit type, choose Pinpoint SMS.For Provide a link to the site or app which will be sending SMS messages, enter the website or application that will send your SMS messages.For What type of messages do you plan to send, choose the type of message that you plan to send (transactional, promotional, or one-time password).For Which countries do you plan to send messages to, enter China.Under Case description, for Use case description, enter the following fields:The SMS message template that you plan to use.The number of messages that you plan to send each recipient each month.Information about how your customers opt in to receiving messages from you.The name of your company or organization.The address that's associated with your company or organization. The country where your company or organization is based.A phone number for your company or organization.The URL of the website for your company or organization.For Amazon PinpointFollow the instructions in Open an Amazon Pinpoint SMS case. When you open your support case, make sure that you complete the following steps:Under Case details, for Limit type, choose Pinpoint SMS.For Provide a link to the site or app which will be sending SMS messages, enter the website or application that will send your SMS messages.For What type of messages do you plan to send, choose the type of message that you plan to send (transactional, promotional, or one-time password).For Which countries do you plan to send messages to, enter China.For How do your customers opt to receive messages from you, provide details about your opt-in process.For Please provide the message template that you plan to use to send messages to your customers, enter the template that you plan to use.Under Case description, for Use case description, enter the following fields:The SMS message template that you plan to use.The number of messages that you plan to send each recipient each month.Information about how your customers opt in to receiving messages from you.The name of your company or organization.The address that's associated with your company or organization. The country where your company or organization is based.A phone number for your company or organization.The URL of the website for your company or organization.Use your preregistered templates to send your SMS messagesImportant: If the message that you send doesn't match the SMS message template that you preregistered, then the mobile phone carrier blocks the message. Also, don't send SMS messages in China that include a sender ID. China doesn't support sender IDs.For Amazon SNSFollow the instructions in either Publishing to a topic or Publishing to a mobile phone, based on your use case. For more information, see Mobile text messaging (SMS).For Amazon PinpointFollow the instructions in Sending a test SMS message in the Amazon Pinpoint user guide. For more information, see Getting started with Amazon Pinpoint.