Put several fingers here and move them
Use Full screen to test the whole screen, edges too. A swipe from the very edge may open your phone's own menus — that is normal.
About the touch screen test
Does your phone miss taps in one corner? Does a tablet stop following your fingers when you zoom? This touch screen test shows exactly what your screen feels.
Every finger gets a coloured circle with its number and leaves a trail as it moves, so you can see at once if a line breaks or jumps. The page counts how many touches the screen follows at the same time. The dead zone grid fills a square everywhere your finger passes — a square that stays empty after you swipe over it shows a spot that does not react.
It works in the browser on phones, tablets, touch laptops and touch monitors. On a computer without a touch screen you can still draw with the mouse to see how it works. Nothing is recorded or sent anywhere.
Features
- Every touch point — a numbered circle for each finger, with lines across the screen to its exact spot
- Trails — each finger draws its own coloured line, so gaps and jumps are easy to see
- Most touches at once — counts the fingers the screen followed at the same time
- What the screen reports — shows how many touch points the device says it supports
- Dead zone grid — squares fill as you swipe; empty squares show spots that may not react
- Full screen — test the whole screen, right up to the edges
- Works with mouse and pen too — handy on a computer, or with a stylus
How to find a dead zone
- Press Dead zone grid, then Full screen
- Swipe slowly over every row of squares, from one side to the other, with one finger
- Go over the edges and corners too — they break most often
- Squares turn green where the screen felt your finger. When every square is green, the page says so
- If a square stays empty after you went over it several times, try once more with another finger. If it still stays empty, that spot of the screen probably does not react
The trails help as well: draw slow straight lines across the screen in Multi-touch mode. A line that breaks or jumps every time at the same place points to the same problem.
How many touches can a screen follow?
Most phones, tablets and touch laptops follow at least 5 fingers, and many follow 10. Put your fingers down one by one and watch Touches now and Most at once.
- Screen says it supports is the number the device reports to the browser
- Most at once is what really happened on this page
- If Most at once stays lower than the reported number, your screen, its driver or a game setting may limit it
Ghost touches
A ghost touch is when the screen reacts while nobody touches it. To check: put the phone down, take your hands away and watch the test area for a minute. Circles or lines that appear on their own are ghost touches.
Common reasons, and what to try:
- A cheap or damaged charger — unplug it and test again
- Water, grease or dirt on the screen — clean and dry it
- A screen protector with bubbles or dust under it — take it off and test again
- A crack in the glass — this usually needs a repair
- Software — restart the device and update it
Frequently asked questions
How do I test my touch screen?
Open this page on the device, press Full screen and touch the test area with several fingers. Watch the numbers, then switch to Dead zone grid and swipe over every square.
Why does the page say there is no touch screen?
Your device or browser does not report a touch screen. That is normal on most desktop computers. If your laptop does have a touch screen, check that it is turned on in the system settings, and try Chrome or Edge.
Why does a swipe from the edge open a menu?
Phones and tablets use edge swipes for their own menus (going back, the notification panel). A web page cannot stop that. Start your swipe a little inside the edge.
Why are my touches limited to 5?
Some screens follow only 5 fingers, and some browsers or drivers report a smaller number. The page shows both what the screen reports and what really happened.
Can I test a stylus with it?
Yes, a pen draws like a finger here. To test its pressure and tilt, use the Pen Pressure Test.
Is anything recorded?
No. Everything happens on your device, and nothing is saved or sent anywhere.
Related tools
- Pen Pressure Test — check the pressure and tilt of a stylus
- Screen Test — find dead and stuck pixels with full-screen colours
- Accelerometer Test — check your phone's motion sensor
- Refresh Rate Test — see your screen's real Hz
- Online Whiteboard — draw and write with your fingers
How to use it
- Open this page on the phone, tablet or laptop you want to test
- Press Full screen to use the whole screen
- In Multi-touch, put several fingers down and move them — read Touches now and Most at once
- Switch to Dead zone grid and swipe slowly over every square, edges and corners too
- Look for squares that stay empty, and lines that break or jump
- Press Clear to start again, and Exit full screen when you are done
