Free · No download · Works on all devices

Touch Screen Test

Tap the button and slide your finger across the screen. We'll instantly show you which areas respond — and which ones don't.

Features

Dead zone detection

Highlights any area of your screen that doesn't respond to touch. Useful for spotting hardware damage or digitizer failures before they get worse.

Multitouch verification

Place 2, 4, or 5 fingers at once and confirm your device tracks each one separately. Great for catching multitouch issues on older or repaired screens.

Live coverage percentage

A real-time counter shows exactly how much of your screen surface has responded. Keep going until you hit 100% — or find out what's stopping you.

Screenshot & share

Tap the camera icon to capture your results. Download the image and send it to your repair shop or manufacturer as proof of the problem.

True fullscreen mode

Expand to genuine fullscreen so you can test right to the edges and corners — the spots most likely to have dead zones after a drop.

Device info display

See your screen resolution, pixel density, and supported touch points at a glance. Handy when comparing specs before or after a screen replacement.

Touchscreen not feeling right?

Walk through our step-by-step fix guide — from cleaning the glass to recalibrating touch input and updating drivers.

Read the fix guide →

Works on any touchscreen device

Phone, tablet, Windows laptop, or drawing tablet — if it has a touchscreen and a browser, this tool works. No app installation, no sign-up.

Learn more →

How to Test Your Touchscreen

1

Tap the Start button

Hit the blue "Start test" button above. The test opens instantly — no app, no download, nothing to install.

2

Slide across the whole screen

Drag your finger or stylus slowly across every part of the display. Touched zones light up green in real time.

3

Watch the coverage counter

The percentage at the top rises as you go. A healthy screen should reach 100%. If it stalls, you've found a problem area.

4

Reveal dead zones

Open the menu and tap "Show Dead Zones." Unresponsive areas turn red so you can see exactly where the problem is.

5

Go fullscreen for edge testing

Corners and edges are the first to fail after drops. Switch to fullscreen mode to reach every millimeter of the display.

6

Save your results

Tap the camera icon to download a screenshot. Use it as evidence when talking to a repair shop or making a warranty claim.

Touchscreen not responding?

Run through our quick checklist: clean the screen, remove any protector, force-restart the device, and run the test again. Most software issues clear up in minutes.

Full troubleshooting guide →

Found a dead zone?

Dead zones after a drop usually mean a damaged digitizer. We'll explain what's happening and whether a repair or replacement makes more sense.

What to do next →

Why Is Your Touchscreen Not Working?

Dirty or wet screen

Oil, moisture, and dust all interfere with capacitive touch. Wipe the screen with a dry microfibre cloth, let it dry completely, and retest.

Faulty screen protector

A cracked, bubbled, or poorly fitted screen protector can block touch signals or cause ghost touches. Remove it temporarily to see if it's the cause.

Software or firmware bug

A bad system update or corrupted driver can kill touch input entirely. Force-restart the device, then check for pending OS updates.

Digitizer damage from impact

Drops and pressure can crack the digitizer layer beneath the glass. Dead zones that appeared after a fall almost always require a hardware repair.

Another app has touch control

Some accessibility or overlay apps intercept touch events. Close background apps and clear recent apps, then run the test in a fresh browser window.

Electrostatic or electrical interference

Charging cables, power adapters, and static build-up can cause erratic touch behavior. Unplug the charger and move away from electrical equipment, then test again.

Frequently Asked Questions

Yes, completely free. No account, no download, and no software installation required. Just open the page and tap Start test.
Yes. The test works on any device with a touchscreen and a modern browser — iPhone, Android phones, tablets, and touch-screen laptops. No app needed.
A dead zone is an area of the screen that does not respond to touch. It can be caused by physical damage to the digitizer, software bugs, or hardware failure. Our test highlights dead zones in red after you slide across the screen.
The test divides your screen into a fine grid and tracks which zones your finger passes over. Accuracy depends on your device's digitizer sensitivity and how thoroughly you swipe across the screen.
Start by cleaning your screen and removing any screen protector, then restart your device and retest. If dead zones persist, check for a software update. Persistent dead zones typically mean a damaged digitizer that needs professional repair.
No. This test only reads your screen's touch input. It does not access your camera, microphone, contacts, or any other device data. Everything runs locally in your browser.
Yes. You can place multiple fingers on the screen at the same time. Each finger is tracked independently, letting you quickly cover the grid and confirm your device handles multi-finger gestures correctly.
Make sure you are touching the screen directly — not using a mouse or trackpad. If the grid doesn't respond, try restarting your browser, clearing the cache, or switching to a different browser. If nothing works, your device's touch hardware may be faulty.
During the test, device information including the maximum number of simultaneous touch points is displayed on screen. Most modern smartphones support 5 or more simultaneous touch points.
Yes. The test works on Windows and macOS touchscreen laptops. Open the page in your browser, switch to touch mode if your device requires it, and swipe across the display to check responsiveness.
It can. A thick, poorly fitted, or cracked screen protector may reduce touch sensitivity or create false dead zones. For the most accurate result, remove the screen protector before running the test.
100% coverage means your finger reached every zone of the test grid and the screen responded correctly in all areas. This is the ideal result and confirms a fully functional touchscreen with no dead zones.
Yes. Tap the camera icon during or after the test to capture a screenshot of your results. You can download and share the image with a repair shop or include it with a warranty claim.
No. The entire test runs locally inside your browser. No touch data, device information, or test results are transmitted to any server. Your privacy is fully protected.
A basic check takes about 30 seconds. For a thorough test covering all edges and corners, allow 1–2 minutes. Use fullscreen mode and multiple fingers to speed things up and get more complete coverage.

Need a replacement screen?

We cover OEM vs aftermarket digitizers, what specs to match, and where to buy safely — so you don't end up with another faulty display.

Read the buying guide →

Just had your screen replaced?

A new screen sometimes needs recalibration. Learn how to fine-tune touch sensitivity after a repair or OS update for the best accuracy.

Calibration guide →