How many words can a short message contain at most? (Number of M-Zones)

Limited by the current communication technology, the amount of text information sent by a single short message is limited to 160 English characters or 140 bytes of binary information, that is, 70 Chinese characters (including punctuation marks). Note that punctuation marks are also Chinese characters.

English letters are encoded in 7-bit ASCII, while Chinese characters are encoded in 8-bit UCS-2, accounting for 2 bytes, so 160 characters are converted in 7-bit ASCII, that is,160x7 =1120 bits; Chinese characters are coded according to 8-bit UCS-2, that is, 8 bits are one character and one Chinese character accounts for 2 characters, so the number of Chinese characters converted from11 120/8/2 = 70.

Shortcomings of SMS

1, the information capacity is small, and it is less attractive to people: SMS platform is boring because it can only be edited in words and lacks corresponding picture materials, but now? With the proliferation of SMS advertisements, the reading rate is not necessarily too high. The sending cost of MMS is too high.

2. Terminal data is difficult to collect: SMS platform needs corresponding numbers to send, and how to collect these numbers and how to send them to those customers after collection has become a very important issue, so the customer coverage of SMS platform may not be comprehensive.

Extended data

According to the size of messages, ordinary messages are divided into single messages and long messages. The so-called long message means that the size of the message exceeds the limit of a single message. You need to split the short message into several short messages and send them separately. When receiving, several short messages are put together to form the content of the original short message. And a single message can be sent directly.

A long short message is a short message with more than 140 bytes (or 70 Chinese characters) received by a mobile phone. The sending of long short messages needs the cooperation of sms channel function. If the channel itself does not have this function, it will be divided into multiple short messages for display. For long messages, after being split into short messages, the provisions of each short message are different from those of a single message.

References:

SMS-Baidu Encyclopedia