What does SMS hidden reminder mean?

1, SMS hidden reminder is to hide the content of a short message when reminding. For example, a colleague borrows a mobile phone to play games, and a friend suddenly sends a text message. At this time, the SMS hidden reminder has the function of protecting his privacy.

2. Short Message Service (SMS for short) refers to the text or digital information directly sent or received by users through mobile phones or other telecommunication terminals. The number of characters that users can send and receive SMS at a time is 160 English or numeric characters or 70 Chinese characters. On April 8, 2020, China Telecom, China Mobile and China Unicom jointly issued the White Paper on 5G SMS, which made the basic SMS service in China enter a comprehensive upgrade channel, and the traditional SMS will be gradually replaced by 5G SMS (RCS service).

3. 1992 When the world's first short message was successfully sent to a mobile phone through a PC on the GSM network in Wolfen, England, no one would have thought that this low-cost short message service, which was originally introduced by telecom operators to solve the high telephone bill, would have such a huge impact on people's economic and cultural life and even politics many years later.

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