https://community.sinch.com/t5/SMS/What-is-a-Concatenated-SMS/ta-p/7235 <DIV class="lia-message-template-content-zone"> <P>The character limit for one SMS is 160 characters. It is possible to send multiple SMS together, formed as a single, longer SMS; this is called a Concatenated SMS:</P> <UL> <LI>a one-part message will allow you to send up to 160 characters - you are charged for 1 message.</LI> <LI>a two-part message will allow you to send up to 306 characters -&nbsp;you are charged for 2 messages.</LI> <LI>a three-part message will allow you to send up to 459 characters&nbsp;-&nbsp;you are charged for 3 messages.</LI> <LI>and so on.</LI> </UL> <P>To join messages together to ensure they deliver as one, a 7-byte concatenation header is used at the beginning of each SMS. Since this header is within the message, it reduces the total size of each SMS to 153 characters each.</P> <P>Please also be aware that if you are sending in Unicode, your character count per SMS lowers to 70 characters for a one-part message due to the fact that each UCS2 character requires 2 bytes. The 7-byte header for concatenated messages will also apply sending in excess of one message. As a result, a two-part Unicode message has a limit of 134 characters and a three-part Unicode message has a limit of 201 characters.</P> <P>&nbsp;</P> <P><EM>Take a look at the <A href="https://www.sinch.com/products/apis/messaging/sms/" target="_blank" rel="noopener">Sinch SMS Product page</A>&nbsp;to learn about Sinch's SMS products, or click&nbsp;<A href="https://www.sinch.com/sign-up/" target="_blank" rel="noopener">here</A>&nbsp;to sign up to our self-service portal and get started&nbsp; and send your first message today!</EM></P> </DIV> Thu, 01 Jul 2021 12:02:59 GMT Shahzad_Ismail 2021-07-01T12:02:59Z https://community.sinch.com/t5/SMS/What-is-a-Concatenated-SMS/ta-p/7235 <DIV class="lia-message-template-content-zone"> <P>The character limit for one SMS is 160 characters. It is possible to send multiple SMS together, formed as a single, longer SMS; this is called a Concatenated SMS:</P> <UL> <LI>a one-part message will allow you to send up to 160 characters - you are charged for 1 message.</LI> <LI>a two-part message will allow you to send up to 306 characters -&nbsp;you are charged for 2 messages.</LI> <LI>a three-part message will allow you to send up to 459 characters&nbsp;-&nbsp;you are charged for 3 messages.</LI> <LI>and so on.</LI> </UL> <P>To join messages together to ensure they deliver as one, a 7-byte concatenation header is used at the beginning of each SMS. Since this header is within the message, it reduces the total size of each SMS to 153 characters each.</P> <P>Please also be aware that if you are sending in Unicode, your character count per SMS lowers to 70 characters for a one-part message due to the fact that each UCS2 character requires 2 bytes. The 7-byte header for concatenated messages will also apply sending in excess of one message. As a result, a two-part Unicode message has a limit of 134 characters and a three-part Unicode message has a limit of 201 characters.</P> <P>&nbsp;</P> <P><EM>Take a look at the <A href="https://www.sinch.com/products/apis/messaging/sms/" target="_blank" rel="noopener">Sinch SMS Product page</A>&nbsp;to learn about Sinch's SMS products, or click&nbsp;<A href="https://www.sinch.com/sign-up/" target="_blank" rel="noopener">here</A>&nbsp;to sign up to our self-service portal and get started&nbsp; and send your first message today!</EM></P> </DIV> Thu, 01 Jul 2021 12:02:59 GMT https://community.sinch.com/t5/SMS/What-is-a-Concatenated-SMS/ta-p/7235 Shahzad_Ismail 2021-07-01T12:02:59Z