1. I use AWS SMS service in one of aws regions. Our client apparently couldn't receiving our SMS with their mobile from abroad in roaming.
a. Cause of AWS SMS service issue officially.
- 1. The phone number might be no longer in ues.
- 2. Phone(or phone number) is in Do Not Disturb list or spam.
- 3. Phone is in roaming network
- By checking architectures, the flow of working of networking services of AWS SMS/SNS;
Amazon SNS -> Aggregator -> Mobile Carrier -> Mobile Endpoint.
As mentioned above, the telephone operator finally delivers a specific message to the appropriate contact, but in roaming case does not appear the locate to the downstream provider.
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Bespin Global Cloud Support Team