It is possible to send concatenated SMS that contains maximum three parts (message is shown on telephone as one). Below we present a list of maximum number of allowed characters in a message: Without special characters:…
How long could a SMS be?
Last updated: April 2026
Reading time: ~2 min
Audience: Boxis customers and administrators.
What you'll accomplish
- Complete the configuration or task described in this guide for your Boxis service.
Prerequisites
- Access to the interface, device, or server described below.
- Information or credentials you received from Boxis (contract, welcome e-mail, or client area).
Note Boxis: Offers and screens may differ slightly depending on your product. When in doubt, open a support ticket with your service reference.
It is possible to send concatenated SMS that contains maximum three parts (message is shown on telephone as one).
Below we present a list of maximum number of allowed characters in a message:
Without special characters: 1 message – max. 160 characters 2 messages – max. 306 characters 3 messages – max. 459 characters 4 messages – max. 612 characters 5 messages – max. 765 characters 6 messages – max. 918 characters
With special characters: 1 message – max. 70 characters 2 messages – max. 134 characters 3 messages – max. 201 characters 4 messages – max. 268 characters 5 messages – max. 335 characters 6 messages – max. 402 characters
Expected result
- The product behaves as described in each step (connectivity, message, or UI state).
If something goes wrong
- Repeat the step and check for typos (hostnames, passwords, ports).
- Note the exact error message or screenshot.
- Open a ticket in the Boxis client area with the service name, time of the test, and any trace (e.g. traceroute) if it is a network issue.
See also
- Other articles in the same category in the Boxis knowledge base.
/knowledgebase/— main knowledge base index.