FAQ about the SMS service
Short Message Service (SMS) is a text messaging service component of phone, Web, or mobile communication systems. The service allows for short text messages to be sent from one cell phone to another cell phone or from the Web to another cell phone. Text messages traditionally can’t exceed 160 characters including spaces. SMS was the most widely used data application, with an estimated 3.5 billion active users, or about 80% of all mobile phone subscribers at the end of 2010.
Here are some frequently Asked Questions from the general public.
- It may be that the recipient’s number is off.
- Every SIM card has a message centre number, if this number changes, there is no way the SMS message will be delivered to the recipient.
- Also, if the recipient’s inbox number is full, the message will not be delivered until he/she deletes some old messages in the inbox or unless the messages were sent as flash.
Once message is successfully received by our platform, it will be processed and submitted to operator for delivery, operator will submit same to handset.
Message may fail to deliver on two occasions:
- Number is Invalid - Permanent failure, no retries done.
- Number is Valid but in Low/poor/bad/roaming Network Coverage - Message will be retried till validity period of the message gets over.
- PENDING: This means messages have been submitted for sending.
- REJECTED: Message not delivered. This status could be caused by bad reception or out of service area. A few phone networks do reject SMS if the phone is unreachable without further attempts.
- FAILED: Failed means that the message has failed after it was submitted to the carrier for delivery.
- DELIVERED TO SIM OR HANDSET: Handset has acknowledged the message. Note - the time of the delivery report = time for the message to be sent, PLUS the time for the delivery report to get back to AQL. This means that e.g., a delivery report taking 10 seconds means the message was probably delivered in about 5 seconds.
- EXPIRED: The SMSC was unable to deliver the message in a specified amount of time. For instance, when the phone is turned off.
- UNKNOWN: An unknown error has occurred.
- UNDELIVERED: The SMSC was unable to deliver the message. For instance, when the number does not exist.
- ACKNOWLEDGED: The SMS was accepted by courier or service provider and will be sent.