1) Disable Haptic Feedback on your iPhone
Disabling Haptic Feedback on your iPhone is easy and anyone can do it with a single tap. Have a look at the steps below to see how it’s done:
Step 1: Bring up Settings on your iPhone and go to the Sounds and Haptics section.

Step 2: Scroll down and disable the “System Haptics” button. Doing this will disable the Haptic Feedback on your iPhone.
2) Disable Vibrations on your iPhone
Disabling System Haptics stops 50% of vibrations on your iPhone however to completely disable them you’ve to play around with few more settings. Have a look at the steps below to see how you can disable vibrations on your iPhone.
Step 1: Go to Settings -> Accessibility on your iPhone.

Step 2: Once you are in the Accessibility menu head to the Touch menu under the Physical and Motor section.
Step 3: Scroll down and turn off the “Vibration” button in the Touch section. Doing this will disable the Vibrations on you iPhone.
