How many words can a short message send?

A short message can only send 70 Chinese characters at most. If it exceeds 70 characters, it will become multiple short messages and cannot be sent together.

A single message can only send 70 Chinese characters at most, because the SMS operator has set the upper limit of a single message to 160 English characters.

160 English characters should be expressed in 7-bit ASCII code, which requires 7* 160 bits. However, changing to 8-bit UCS-2 coding means that 7* 160/8 bits are needed. At the same time, because Chinese characters need to occupy two characters, the total number of Chinese characters is 7* 160/8/2, which is exactly equal to 70.

Extended data

Development history of SMS:

1992, the world's first short message was successfully sent to the mobile phone through the computer on the network of Vodafone company in Britain, thus announcing the birth of mobile phone short messages.

China Mobile Communication Network began to have SMS function on 1994. Starting from 1998, China Mobile and China Unicom expanded their short message service on a large scale.

In 2000, the number of mobile phone short messages in China exceeded 654.38 billion. 200 1 year reaches18.9 billion; In 2004, this figure soared to 90 billion.

In 20 12 years, the number of mobile short messages sent nationwide reached 897.3438+0 billion.

Baidu Encyclopedia-SMS