Screen protectors, old ones in particular, can cause problems with an iPhone’s touch screen. Try using a new screen protector if one is available. If not, retailers like Amazon sell them.

How to Fix a Touch Screen That Isn't Working We've found that the following steps can help a touch screen start working again. You should try them in this order, but some may not apply to your device.

A dirty iPhone screen can affect your iPhone's ability to detect changes in charge (which is how a touch screen works). Ultimately, this can cause your iPhone's screen to not respond to your touch.

Is your iPad touchscreen not working? Here are some troubleshooting tips to help you fix the problem. We'll walk you through all the steps you need to take to get your iPad touchscreen working again.