Taking the iPhone6 mobile phone as an example, the specific operation includes the following steps:

First, open "Settings" on the phone desktop, as shown in the figure below.

2. After opening Settings, find "Sound and Touch" and click to enter the next step, as shown in the figure below.

3. Finally, click the button to the right of "Ring Mode Vibration" or "Silent Mode Vibration" to turn on this function, as shown in the figure below.