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Welcome to the Developer Forum!

The Developer Forum is your place to find answers, ask questions, share experiences with other Sinch developers and learn about Sinch products and services. The Developer forum is part of the wider Sinch Support Community, which comprises detailed su...

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Common SMS error codes

The table below lists some common SMS error codes with explanation of why they occur: Error code Description Explanation 153 Absent Subscriber Subscriber handset not connected to the network. Likely turned off or outside the area of coverage. 150 Unk...