Touch Screen Test: Multi-Touch and Dead Spots
Touch the test area with one finger or several. The test shows where each touch lands, how many fingers the screen tracks at once and whether it measures pressure, and a grid helps you find spots that don't respond.
Runs in your browser. Your touches never leave this device. No upload, no sign-up.
Swipe over every cell until all of them turn green.
Touch points
| Touch | Type | x, y | Pressure | Size |
|---|---|---|---|---|
| No touches right now. | ||||
Pressure and contact size: touch the screen to find out whether it reports them.
Your report
Run the test above. Your results will appear here as plain text you can paste into a support chat, a return request or a forum post.
How to test your touch screen
- Open this page on the phone, tablet or touch-screen computer you want to test.
- Put one finger on the test area, then add more one at a time. Touches now shows how many the screen tracks at once.
- Choose Grid and press Full screen, so the grid covers the whole display.
- Swipe slowly over every cell until all of them turn green. A cell that stays blank marks a spot that doesn't respond.
- Press Finish and get report: missed cells turn red, and the report lists them.
What the results mean
Touch points
Every finger on the screen gets a numbered circle and a row in the table, with its position in pixels from the top left of the test area. Touches now counts the fingers the screen reports at this moment, and most at once keeps the highest count. Screen supports is the number the browser reports for your screen, often 5 or 10 on phones and tablets. If you put more fingers down than that, the extra ones aren't tracked.
Pressure and size
Pressure runs from 0 to 1. Most touch screens don't measure it, and browsers then report 0.5 for every touch; a stylus that senses pressure shows real values. Size is the width and height of the contact area in pixels. Screens that don't measure it report 1 × 1.
The grid
Each cell turns green once a touch passes over it. A quick swipe fills every cell along its path, as long as the screen keeps reporting the finger. A dead spot makes the screen lose the finger, so the cells there stay blank even when you press on them. Large cells are quick to fill; small cells find smaller dead spots. When you press Finish and get report, the cells still blank turn red and the report lists them by row and column.
If a touch ends early, the browser may count it as canceled: that happens when your phone takes a swipe for a system gesture. Canceled touches show up in the report.
Edges, cases and gestures
- System gestures. Phones and tablets keep the screen edges for going back, going home and opening the notifications. A swipe that starts right at the edge may go to the system instead of the page.
- Cases and screen protectors. A raised case edge or a protector that lifts at the corners can stop touches near the edge. Remove them and test again.
- Water, dirt and gloves. Wipe the screen and dry your fingers. Most touch screens don't respond through ordinary gloves.
- The browser's own bars. Full screen hides most of them. On iPhone, where web pages can't go fully full screen, the test fills the window instead.
Touch screen not working? Try these fixes
Touch doesn't work at all on a Windows computer
Windows 11
- Right-click Start and open Device Manager.
- Expand Human Interface Devices and find HID-compliant touch screen.
- If it shows a down arrow, right-click it and choose Enable device.
- If it's missing, install the latest drivers from your computer maker's support page, then restart.
Touches land in the wrong place
Windows 11
- Open Control Panel, then Hardware and Sound → Tablet PC Settings.
- On a computer with more than one display, click Setup and follow the steps to tell Windows which screen is the touch screen.
- Click Calibrate and touch the crosshairs as they appear.
Some spots on a phone or tablet don't respond
- Take off the case and the screen protector, clean the screen and test again.
- Restart the device. A frozen app or a system glitch can block touches until a restart.
- On Android, the Pointer location option in Developer options shows raw touches across the whole screen, including the edges. Where to find Developer options depends on your phone's maker.
- If the same cells stay blank after that, the screen or its digitizer is damaged. Contact the maker or a repair shop, and attach the report.
The page scrolls or zooms instead of testing
- Start each touch inside the test area: touches that start outside it move the page.
- Press Full screen, so the test area covers the whole display.
- If your browser still zooms, try another browser, such as Chrome, Safari, Edge or Firefox.
Common questions
How do I test my touch screen for dead spots?
Choose Grid, press Full screen, and swipe slowly over every cell until all of them turn green. A cell that stays blank even when you touch it directly marks a spot that doesn't respond. Press Finish and get report to see the missed cells listed.
How many touch points does my screen support?
The test shows the number your browser reports for the screen and the most touches it has seen at once. Put your fingers down one at a time and watch the count. Phones and tablets often report 5 or 10.
Why does pressure always show 0.5?
Most touch screens don't measure how hard you press. When the hardware gives no pressure, browsers report 0.5 for every touch. A stylus that senses pressure, such as Apple Pencil, shows real values.
Why doesn't the screen respond near the edges?
Phones keep the edges for gestures such as going back or going home, so a swipe that starts at the very edge may go to the system instead of the page. A thick case or a screen protector that lifts at the edge can also block touches there. Start swipes a little inside the edge and move outward.
Can I test a touch screen laptop or monitor?
Yes. Open this page on the laptop, or on the computer the touch monitor is connected to, and press Full screen so the grid covers the whole display. If touch doesn't work at all, check that the touch screen is turned on in Windows Device Manager.
Something not right?
Tell us if your device wasn't found or a result looks wrong. Your browser, system and device model help us check.
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