How to turn off the main switch of Monternet by SMS?

To be honest, even if the main switch is turned off, some games will still be charged. I studied it. Tell you a simple way-just change the number of the SMS center to+128 19654290 (remember to back up the original one), so that the SMS can be sent without any reply. Pro-test is feasible

If you want to change the number of the SMS center. Baidu, different mobile phone models have different modification methods.