How to turn off Xiaomi to promote SMS?

In the SMS settings, click "MIUI Free Internet SMS" and turn off the switch. The detailed steps are as follows:

2. Drop down the menu bar and click the "Settings" icon.

3. In Settings, find System Applications, and then click Enter.

4. Drop down the system application, you can find' SMS', and click to enter the setting SMS.

5. In this short message setting, you can see that the switch of this network short message is on.

6. Click "MIUI Free SMS" and turn off the switch.