Troubleshooting
One symptom per page, with its actual causes rather than a list of generic advice.
Most SMS sending problems have a precise explanation, usually tied to how a message is encoded or to the number entered. Each page below starts from an observable symptom and works back to its causes, in order of frequency.
My SMS was not sent
The form refuses the send, or reports an error.
The causes, from most to least commonThe recipient received nothing
The message went out, but does not show up on their phone.
The causes, from most to least commonThe confirm button stays locked
The countdown seems never to end.
The causes, from most to least commonMy message arrived in several parts
Past the limit the network splits — and sometimes badly.
The causes, from most to least commonMy characters were changed
SMS does not carry just any character.
The causes, from most to least commonI received no reply
The reply does not arrive where you expect it.
The causes, from most to least commonWhat we cannot tell you
Our gateway confirms that a message was accepted for delivery, not that it appeared on the recipient's phone. The SMS format has no read receipt, and this service provides no delivery receipt. No page on this site can therefore confirm that a message was read.
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