Q: My iphone touch screen will not respond to my touch.  How do I fix?

Hi, watortho!

Thanks for using the Apple Support Communities. After reading your post, I see that your iPhone's multitouch display is not responding as expected. I rely on my iPhone everyday, so I know how important it is to have it functioning; I'm happy to offer some help!

Try these steps, from the article If the screen on your iPhone, iPad, or iPod touch doesn‘t respond to touch:
 

Check your touchscreen

Make sure that your hands are clean and dry, then try these steps:

1. If you have a case or screen protector on your device, try removing it.
2. Clean the screen with a soft, slightly damp, lint-free cloth.
3. Unplug your device.
4. Restart your device. If you can't restart it, you can force restart your device.

If your touchscreen still doesn't respond like it should, contact Apple Support or take your device to an Apple Retail Store or Apple Authorized Service Provider.

Have a great day!