From NPR:
If Romeo and Juliet lived in modern China, their dialogue would probably be in 70-character text messages. That’s how college student Wong Lei’s boyfriend courted her.
“He told me his experiences from the time he was born through college, all in text messages,” says Wong, a college student.
Text messaging is the most popular form of communication in China. Six hundred million Chinese have cell phones — that’s twice the population of the United States and three times the number of Chinese with Internet access.
Text messages are cheaper than a phone call by about half. No one in China has voice mail, so it’s the surest way to get a message to someone.