How to cancel GPRS package by SMS?

GPRS package is a domestic traffic package for 2G mobile phone users of China Unicom.

How to cancel GPRS package by SMS;

5 yuan GPRS: 5 yuan/month, 30MB domestic traffic will be donated, and the excess will be charged at 0.00 1 yuan /KB. Edit 7262 to 100 10 (and turn off GPRS function at the same time).

10 yuan GPRS: 10 yuan/month, 70MB of domestic traffic will be presented, and the excess will be charged at 0.00 1 yuan /KB. Edit 7264 to 100 10 (and turn off GPRS function at the same time).

20 yuan GPRS: 20 yuan/month, giving away domestic traffic of 150MB, and charging the excess at 0.00 1 yuan /KB. Edit 7266 to 100 10 (and turn off GPRS function at the same time).

30 yuan GPRS: 30 yuan/month, 300MB domestic traffic will be donated, and the excess will be charged at 0.00 1 yuan /KB. Edit 7268 to 100 10 (and turn off GPRS function at the same time).

After the traffic is cancelled, the remaining traffic cannot be carried forward to next month. Sending this information is free of charge, and sending short messages between 19: 00 on the last day of the month and 8: 00 on the second day of the next month cannot be cancelled.