Open Settings
Tap Sounds & Haptics
Turn off Vibrate on Ring
Turn off Vibrate on Silent
If needed, turn off Haptic Feedback in the same menu
To stop vibration for specific alerts, go to Settings
Tap Notifications
Select the app
Turn off Sounds or change the alert style
To disable keyboard vibration, go to Settings
Tap Sounds & Haptics
Tap Keyboard Feedback
Turn off Haptic
To disable system vibration settings, go to Settings
Tap Accessibility
Tap Touch
Turn off Vibration