LG G3100 User Manual page 143

Usually, the type of message is set to . You can convert your
text into alternative formats, which are suitable for the device that will
be received the message. Contact your service provider for the
availability of this function.
This network service allows you to set how long your text messages
will be stored at the message center while attempts are made to
deliver them to you.
If you set in this menu, you can check whether your message is
sent successfully or not.
When a message is sent, it allows the person to whom you sent the
message to reply and charges the cost of the reply to your telephone
bill.
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