How to Make an iPhone Less Sensitive to Taps

Open your iPhone's Settings. Do so by tapping the grey gear icon on one of your Home screens (it might also be in a folder named "Utilities").

Scroll to the third group of options and tap General.

Scroll to Accessibility and select it.

Scroll to the third group of options and select Touch Accommodations.

Slide the Ignore Repeat button right to the "On" position. Ignore Repeat ignores all but the first of multiple taps if they fall within a certain time parameter (e.g., 0.50 seconds).

Adjust the ignore repeat time. Tap + or - to do so.

Slide the Hold Duration button right to the "On" position. With Hold Duration enabled, you have to briefly hold your finger down for a touch to register.

Adjust the hold duration time. To do this, tap + to increase the amount of time it takes for a touch to activate, or tap - to decrease the amount of time.

Slide the Touch Accommodations button right to the "On" position. It should turn green.

Tap OK. Your iPhone should now be less responsive to short or repetitive taps.