An SMS message exceeding 160 GSM characters or 70 Unicode characters that is automatically split into multiple segments and reassembled on the recipient device.
Why Long SMS Matters
A single SMS segment has a hard character cap, 160 for GSM 7-bit, 70 for Unicode. Any message longer than that cannot be sent as one segment; it has to be split, sent as multiple linked segments, and reassembled by the recipient's handset into what reads as one message.
How Long SMS Works
The message is split at 153 characters per segment for GSM encoding, or 67 for Unicode, the drop from the single-segment limit leaves room for a User Data Header (UDH) that carries a reference number and segment order, which is what lets the handset reassemble the segments in the right sequence as one message.
How SMPPCenter Uses This
SMPPCenter automatically detects when a message exceeds one segment, splits it correctly for the encoding in use, and bills per segment, matching what the carrier actually charges for the send.
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What Our Clients Say
Our clients run regulated, high-volume messaging infrastructure and prefer not to be named publicly. These testimonials are shared with permission while keeping commercially sensitive details confidential.
We evaluated several messaging platforms before selecting SMPP Center. The deployment flexibility and API capabilities matched our enterprise requirements.
High throughput, intelligent routing, and detailed monitoring have significantly simplified our messaging operations.
The delivery reports and routing controls give us the visibility we were looking for. The system has integrated well with our internal applications.
The migration was completed smoothly and the platform has remained stable under heavy production traffic. The flexibility of self-hosting was one of the biggest advantages for us.
Names and company details are withheld at our clients' request. This is common among telecom providers, SMS aggregators, fintech companies, and enterprises that consider their messaging infrastructure commercially sensitive.