When trying to send a text SMS message through icomplete initially the SMS displays QUEUED then (SMSCR-26) against the text message on the dashboard - see example below:

 

 


 

That is an error to say that it wasn’t delivered  which normally means that it had issues reaching the destination phone. 


Check with the person you were sending the SMS message to, to ensure that the mobile number is still in service and also that the mobile is not switched off.