Each SMS received a delivery status from the operator after this has been sent. The table below shows you the different status, their meanings and the actions you can take to solve any issues you may have. You can always check our troubleshooting guide for undelivered SMS if you are seeing a lot of 'not delivered', 'expired' and 'sent' statuses on your SMS traffic: My SMS was not delivered
|Delivered||The message has been delivered and we received a confirmation via the DLR (delivery report).|
|Not delivered||We were unable to deliver the message. Possibly the mobile number was entered incorrectly or doesn't exist (anymore). It's also possible that the device wasn't connected with the A2P* network within the validity time span**.||Check if the recipient's mobile number is correct.|
|Expired||We were unable to deliver the message. The device was possibly not connected with the A2P* network within the validity time span**.||Switch off the device and restart it after 10 seconds. This will force it to re-establish the connection with the provider. Please retest it with another message.|
|Sent||The message has been sent, but we didn't receive a delivery status yet. Possibly the device is switched off or has no connection.
This is a temporary status and will always change to either Delivered or Not delivered (within the validity time span*).
Is the device switched on and is the connection fine, but does the delivery status still show Sent? Switch off the device and restart it after 10 seconds. This will force it to reestablish the connection with the provider. Please retest it with another message.
|Buffered||The message has been sent, it's just in the queue for delivery.||
* A2P is Application2Phone, or in this case from MessageBird to your client
** Learn more about the validity period here: Setting a Validity Period for your SMS