SMS pricing is based on your subscription plan, the destination and type of message you’re sending, as well as the carrier to which the SMS is being sent.
Additional carrier fees apply per carrier. See below for carrier fees related to long code SMS, long code MMS, short code SMS, and short code MMS.
SMS Character Limit
Text messages are charged per segment. The character limit for a single SMS message is 160 characters, however most modern phones and networks support concatenation and segment and rebuild messages up to 1600 characters. Messages not using GSM-7 encoding are limited to 70 characters.
When you send a SMS message over 160 characters the message will be split. Large messages are segmented into 153 character segments and sent individually then rebuilt by the recipient’s device.
For example, a 161 character message will be sent as two messages, one with 153 characters and the second with 8 characters.
If you include non-GSM characters like eastern characters in SMS messages, those messages have to be sent via UCS-2 encoding. Messages containing any UCS-2 characters are limited to 70 characters and will be concatenated into 67 character message segments, even if the messages contain less than 160 characters.