The length of a standard SMS is 160 characters. WinSMS supports long SMS messages of up to 918 characters (taking into account the symbols that count as 2 characters. This is equivalent to 6 concatenated messages in total.
Messages are concatenated in accordance with the Global System for Mobile Communications and their protocols for cellular networks using mobile devices. (This just means that it is an industry-standard your cellular network has to follow.)
Please find below SMS breakdown in more detail:
1 – 160 = 1st SMS segment.
161 - 306 = 2nd SMS segment.
307 - 459 = 3rd SMS segment.
460 - 612 = 4th SMS segment.
766 - 918 = 6th SMS segment.
*Please note that each segment will be charged at the credit cost per SMS segment (local sms sending). Please contact us for international sms sending rates.