What is SMS Segment?
An SMS segment is typically 160 characters long when using the standard GSM-7 character set. If the message exceeds this limit, it’s split into multiple segments—each then containing 153 characters. This is because extra information (User Data Header) is needed to assemble and deliver the message, reducing the character count per segment.
This is why you may come across the term Segment on our platform, in reports, and in billing. Segments count is used for billing, both from us to you and from the operator to us.
You can use external tools or the built-in calculator on our platform to calculate the number of SMS segments. If anything’s still unclear, feel free to send us a message!
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Updated on: 08/06/2026
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