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What happens if an SMS message is sent to a mobile phone that is offline?

April 26, 2017happens message Mobile Phone offline sent SMS

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What happens if an SMS message is sent to a mobile phone that is offline?

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The SMS messages is stored in the SMSC until the destination phone becomes online. In standard SMS communication when an SMS is submitted by a mobile phone it is submitted to an SMSC. This message submission is called Mobile originated (MO) message submission. After the SMSC receives the message it stores it and looks for the recipient mobile phone. If the recipient mobile phone is available in the mobile network it sends the message as a Mobile terminated (MT) message. The format of the MO and MT messages are different. If a computer sends a message to a mobile phone it submits it to an SMSC. This message submission is called Application originated (AO) message submission and it is often done through an IP SMS protocol.