How to open China Mobile Daily Package 6 16m in 3 yuan?

Daily traffic packets, including domestic traffic, are valid for 24 hours and automatically expire after expiration. Before 20 18 12 3 1, you can enjoy the discount of 5 yuan 1G and 7.5 yuan 2G. After the traffic exceeds, it will be charged according to its own internet access fee. Send SMS "4573" to 10086 to apply for 5 yuan 1G traffic daily package; Send the short message "4574" to 10086, and 7.5 yuan can handle the 2G traffic daily package.