The table below represents maximum characters length (including spaces) of message segments. Messages that are longer will be divided into multiple message segments and concatenated by most carriers. Concatenated messages will generally be re-assembled on the destination device and presented as one SMS message. For more information on message length, segments, and concatenation please refer to the SMS Message Length Guide.
| Transport Code Type | Encoding/Character Set | Character Limit | Concatenation |
|---|---|---|---|
| Shortcode | GSM7 UTF16/UCS2 |
160 70 |
Yes. US carriers support multiple segments and concatenation |
| 10DLC, TFN, International numbers | GSM7 UTF8 UTF16/UCS2 |
160 140 70 |
Yes. US carriers (and most international carriers) support multiple segments and concatenation |
Revision:
3
Last modified:
28 August 2023