C1328 The Villages Surrounded the City

"Short message?"

"That's right. We are digital signals. We can use handphones to write some short messages. We can send them out through this System."

Short message was the most commonly used method before 4G technology appeared. At that time, a mobile phone set meal could not be used without hundreds of text messages.

What was the use of text messages? As long as it was someone with foresight