Reason 3 for Failed Delivery of Bulk SMS- Recipient’s Phone Number has Been Switched off for Long
Network operators have a message delivery validity period, a time period during which a message can stay viable before expiration. When an SMS gets to a phone number and the phone number is switched off at that moment, there is validity time period the message can stay that way waiting for the phone to come back on so to speak. If the phone remains that way for long and the waiting period elapse, the message expires and whenever the phone does comes back on, the owner won’t get the message.
In order for you to know the delivery status of your sent messages and also to understand why your sent messages did not get delivered in cases when they don’t, at SmartSMSSolutions, there is an ability to check delivery report for your sent messages. Also, we’ve put together the different delivery status codes and what they stand for .
It is our abiding interest here at SmartSMSSolutions to get your sent messages delivered and the system down here is optimized to do just that provided the above factors are effectively handled. We hope this information helps. Free bulk SMS account registration is still on. Sign up one if you do not have presently.