Adding and verifying phone numbers in the Amazon SNS SMS sandbox
Before you can start sending SMS messages from your AWS account while in the SMS sandbox, you must complete the following setup steps. This ensures that your account is ready for SMS messaging and that your destination phone numbers are properly verified.
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Create an origination ID. Similar to accounts outside of the SMS sandbox, an origination ID is necessary before you can send SMS messages to recipients in some countries or regions.
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Add the destination phone numbers you want to send messages to within the SMS sandbox.
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Verify the phone numbers to ensure that the destination phone numbers are valid for use in your SMS messages.
Add and verify destination phone numbers
Sign in to the Amazon SNS console
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In the console menu, choose a region that supports SMS messaging.
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In the navigation pane, choose Text messaging (SMS).
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In the Sandbox destination phone numbers section, select Add phone number.
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Under Destination details, provide the following information, and then select Add phone number:
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Country code and phone number of the destination.
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The language you want the verification message to be sent in.
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After adding the phone number, Amazon SNS will send an OTP to the provided destination phone number. This OTP is required for verification.
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You will receive the OTP as a standard SMS message on the destination phone number you provided.
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If you don’t receive the OTP within 15 minutes, select Resend verification code in the Amazon SNS console.
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You can resend the OTP up to five times in a 24-hour period.
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Once you receive the OTP, enter it in the Verification code box and select Verify phone number.
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Check the verification status.
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After successfully verifying the phone number, the phone number and its verification status will appear in the Sandbox destination phone numbers section.
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If the status is Pending, the verification was unsuccessful. This may happen if, for example, you didn’t enter the country code correctly.
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You can only delete pending or verified phone numbers after 24 hours or more have passed since the last verification attempt.
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If you wish to use the same destination phone number in other regions, repeat the previous steps for each region where you intend to use it.
Troubleshooting non-receipt of an OTP text
Troubleshoot common problems that may prevent a phone number from receiving OTP texts.
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Amazon SNS SMS spending limit: If your AWS account has exceeded the spending limit for sending SMS messages, further messages, including OTP texts, might not be delivered until the limit is increased or the billing issue is resolved.
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Phone number not opted in for SMS notifications: In some countries or regions, recipients must opt in to receive SMS messages from short codes, which are commonly used for OTP texts. If the recipient's phone number is not opted in, they will not receive the OTP text.
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Carrier restrictions or filtering: Some mobile carriers may have restrictions or filtering mechanisms in place that prevent delivery of certain types of SMS messages, including OTP texts. This could be due to security policies or anti-spam measures implemented by the carrier.
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Invalid or incorrect phone number: If the phone number provided by the recipient is incorrect or invalid, the OTP text will not be delivered.
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Network issues: Temporary network issues or outages could prevent the delivery of SMS messages, including OTP texts, to the recipient's phone.
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Delayed delivery: In some cases, SMS messages may experience delays in delivery due to network congestion or other factors. The OTP text may eventually be delivered, but it could be delayed beyond the expected timeframe.
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Account suspension or termination: If there are issues with your AWS account, such as non-payment or violation of AWS terms of service, Amazon SNS messaging capabilities, including OTP texts, may be suspended or terminated.
