發送短信

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 _    _    _    _      _____     ___       _____  
| || | || | || | ||   / ___//   / _ \\    / ___// 
| || | || | || | ||   \___ \\  / //\ \\   \___ \\ 
| \\_/ || | \\_/ ||   /    // |  ___  ||  /    // 
 \____//   \____//   /____//  |_||  |_|| /____//  
  `---`     `---`   `-----`   `-`   `-` `-----`

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發送短信 : An empirical study of mobile network behavior and application performance in the wild