Are your text messages cut short (truncated)?
New accounts are normally limited to a maximum of three-message-parts (459 GSM characters).
Normally, SMS messages are 160 characters including spaces and punctuation (some characters affect the allowed characters - see UCS2 below).
We support sending longer text messages - you are charged 'per SMS Part' that you send.
For example, if you send a 159 character message, you are charged for one SMS Part. However, if you send a 161 character message, you are charged for two SMS Parts.
How to increase your maximum allowed SMS Parts:
You can update your account for sending longer messages:
- Log into the Web Dashboard at my.tnz.co.nz
- Select Users from the menu
- Click on the user you would like to update
- Click the Edit/Modify button
- Select the SMS Options tab
- Adjust SMS Parts Length to match the number of allowed message parts
- Click the Update button
- Repeat these steps for other users that require updating
'Characters per SMS Part' Calculation:
Using 'Normal' SMS characters means you're allowed 160 characters for your first SMS Part, then 153 characters per SMS Part thereafter.
|Number of Characters (using GSM 7 bit encoding)||Number of Message Parts Used||Total Charge for Message|
|0 - 160||1||1x SMS Price|
|161 - 306||2||2x SMS Price|
|307 - 459||3||3x SMS Price|
|460 - 612||4||4x SMS Price|
|613 - 765||5||5x SMS Price|
|766 - 918||6||6x SMS Price|
|919 - 1071||7||7x SMS Price|
|1072 - 1224||8||8x SMS Price|
|1225 - 1377||9||9x SMS Price|
Characters per SMS Part when using Special Characters:
Some characters aren't 'Normal' SMS characters and require special encoding (called UCS-2, as opposed to GSM). When special characters are used, SMS Parts reduce to 67 characters.
The most common causes are emojis (❤️), curly quotes (“quote”), apostrophes (you’re) and language characters (such as 是 and é and ā).
In this example, adding a single Exclamation Mark emoji causes the first text to reduce to 70 characters per SMS Part and all subsequent parts are 67 characters:
|Number of Characters (using Unicode UCS-2 encoding)||Number of Message Parts Used||Total Charge for Message|
|0 - 70||1||1x SMS Price|
|71 - 134||2||2x SMS Price|
|135 - 201||3||3x SMS Price|
|202 - 268||4||4x SMS Price|
|269 - 335||5||5x SMS Price|
|336 - 402||6||6x SMS Price|
|403 - 469||7||7x SMS Price|
|470 - 536||8||8x SMS Price|
|537 - 603||9||9x SMS Price|
See the GSM 03.38 specifications for a full list of standard GSM characters.