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