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 are responding — and which ones aren't.

Features

Dead zone detection

Highlights any area of your screen that is not responding to touch. Useful for identifying hardware damage or digitizer failures before they worsen — especially common on budget Android handsets.

Multitouch verification

Place 2, 4, or 5 fingers at once and verify your device tracks each one separately. Very handy for checking multitouch issues on repaired or refurbished phones.

Live coverage percentage

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

Screenshot & share

Tap the camera icon to capture your results. Download the image and send it to your service centre or include it with a brand warranty claim.

True fullscreen mode

Expand to genuine fullscreen so you can test right to the edges and corners — the spots most prone to dead zones after a fall or rough handling.

Device info display

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

Touchscreen not feeling right?

Go through our step-by-step fix guide — from cleaning the glass to recalibrating touch sensitivity and checking for pending software updates.

Read the fix guide →

Works on any touchscreen device

Android phone, iPhone, tablet, or Windows laptop — if it has a touchscreen and a browser, this tool works. No app, no sign-up, no mobile data wasted.

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 slowly across every part of the display. Touched zones light up green in real time.

3

Watch the coverage counter

The percentage rises as you go. A healthy screen should reach 100%. If it stops climbing, you have found a problem area.

4

Reveal dead zones

Open the menu and tap "Show Dead Zones." Unresponsive areas turn red so you can pinpoint where the issue lies.

5

Go fullscreen for edge testing

Corners and edges are the first to fail after a drop. Switch to fullscreen mode to reach every millimetre of the display.

6

Save your results

Tap the camera icon to download a screenshot. Use it as proof when visiting a service centre or filing a warranty claim with the brand.

Touchscreen not responding?

Go through our quick checklist: clean the screen, remove the tempered glass protector, force-restart the device, and run the test again. Most software issues sort themselves out in minutes.

Full troubleshooting guide →

Found a dead zone?

Dead zones after a drop usually mean a damaged digitizer. We explain what is happening and whether a local repair or brand service centre replacement makes more sense.

What to do next →

Why Is Your Touchscreen Not Working?

Dirty or wet screen

Oil from fingers, moisture, and dust all interfere with capacitive touch. Wipe with a clean dry cloth, let it dry fully, and test again.

Faulty tempered glass or screen guard

A cracked, bubbled, or poorly fitted screen guard can block touch signals or cause ghost touches. Peel it off temporarily to see if it is the culprit.

Software or firmware bug

A bad OTA update or corrupted driver can kill touch input entirely. Force-restart the device and check for a pending software update from your brand.

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 hardware repair at a service centre.

Another app has touch control

Some accessibility or overlay apps intercept touch events. Close all background apps, clear recents, and run the test in a fresh browser tab.

Charging cable or electrical interference

Cheap or unbranded chargers and adapters can cause erratic touch behaviour. Unplug the charger and move away from heavy electrical equipment, then test again.

Frequently Asked Questions

Yes, completely free. No account, no download, and no software installation required. Simply open the page and tap Start Test.
Yes. The touch screen test works on any device with a touchscreen and a modern browser — Android phones, iPhones, tablets, and touchscreen 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 swipe 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 the screen guard, 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 at a service centre.
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. If the grid does not respond, try restarting your browser, clearing the cache, or switching to Chrome or Firefox. 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.
It can. A thick, bubbled, or cracked tempered glass screen guard may reduce touch sensitivity or create false dead zones. For the most accurate result, remove the screen guard 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. Download and share it with your service centre or attach it to a brand 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 third-party digitizers, which specs to match, and where to buy safely — so you do not end up with another faulty display from a local market.

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 OTA update for the best accuracy.

Calibration guide →