What is Concatenated Short Message Service (concatenated SMS)?
Concatenated short message service (concatenated SMS) is a series of multiple messages that are linked to form and communicate continuous SMS messages, which is convenient for modern cell phone users.
An SMS message is 160 characters long, so early SMS-enabled cell phone users had to send successive individual messages to send longer messages. Chained SMS eliminates this inconvenience.
Chained short message service is also known as PDU mode SMS.
A linked SMS offers space for up to 255 separate SMS messages. Chaining (or concatenating) separate text messages is invisible to the sending and receiving of mobile users entering and / or reading a long continuous message within a user interface.
Behind the scenes, eight-digit SMS parts are used within the user data header information. As a result, only 152 characters are included in each SMS message part. Because there are multiple SMS messages in a PDU mode SMS, service providers typically charge users for each SMS portion within the entire concatenated SMS.