What is the maximum number of characters that can be entered in the SMS content of Mobile 400 service? What are the requirements for the characters?

According to international standards, the length of a single short message can't exceed 70 Chinese characters (or 160 pure English), and at most 5 10 Chinese characters can be sent on a page at a time (or 1200 pure English, and the mixing of Chinese and English is treated as Chinese). The system will automatically split according to the number of words entered and the type of short message (ordinary short message or long short message). Because short messages may contain various additional information (separators, corporate signatures), the actual content of each short message generally does not exceed 70 Chinese characters (or 160 in pure English).