How to fix my iPhone 6s Error Touch Screen

when my iPhone fell caused an error touch screen, if I touch in the screen random freezing not accurate,  and I try to fix it with several ways. finally, fix it use a setting in 3D touch disabled.

 Solution: Configure display settings and options.

Adjusting the 3D touch settings on your iPhone 6s can also help rectify any issues with the touchscreen. In fact, many iPhone users were able to deal with the problem with this workaround. This can be a possible solution to your case so you might as well consider giving it a try and see what happens then. Follow these steps:

• Go to Settings.
• Tap General.
• Tap Accessibility.
• Tap 3D Touch.
• Adjust the sensitivity settings.
• Reboot your iPhone.

After the reboot, try to see if the touchscreen is already working fine. Adjusting the  3D Touch sensitivity is used to fix problems related to 3D Touch presses that are not working as intended.


Thanks for :

https://www.ikream.com/2018/11/fix-apple-iphone-6s-touchscreen-responding-slowly-randomly-freezing-not-working-troubleshooting-guide-26170