What is the most cost-effective package for SMS?

M-zone Monthly rent 15 yuan, including 180 short messages, 40 local calls and 4 multimedia messages! Very good. If you need more text messages, there is a package in 20 yuan, including 260 text messages, 8 MMS messages and 60 minutes of local calls. Only six yuan in January, 20 points deducted every day! Very good! Fetion is not practical. By fetion. The sender must also open Fetion to download the software!