UtilityBaseDevice Tests
Touchscreen & Multi-Touch Tester
Test your touchscreen for dead zones and ghost touches, and see how many simultaneous touches it registers.
Updated July 10, 2026
How to use the touchscreen & multi-touch tester
- 1Open the tester on the device to check.
- 2Touch and drag inside the box.
- 3Use several fingers to test multi-touch.
- 4Watch for dead zones or ghost touches.
Common uses
- Checking a phone or tablet for dead zones
- Finding your device's multi-touch limit
- Diagnosing ghost touches
- Testing a screen before buying used
Frequently asked questions
How do I test for dead zones?
Drag your finger slowly across the entire screen and watch the contact point follow it. If the marker disappears or jumps in a particular area, that spot may be a dead zone where the digitizer isn't registering touches.
How many touches can my screen handle?
Place as many fingers as you can and read the 'max simultaneous' counter. Many phones support 5 or 10 simultaneous touches; the tester shows the most your device registered at once.
What is a ghost touch?
A ghost touch is an input the screen registers when you're not touching it, often from a faulty digitizer or screen protector. If contact points appear on their own here, that's a sign of ghost-touch trouble.
About this tool
The touchscreen tester checks that your screen registers touches correctly. Each finger you place shows a marked contact point with crosshairs and coordinates, and a counter tracks the active touches and the most registered at once — a quick way to find your device's multi-touch limit. Drag across the whole surface to spot dead zones where a touch stops registering, or ghost touches that appear on their own. It works with touch, mouse, or stylus. Everything runs in your browser.
Like most tools on UtilityBase, the touchscreen & multi-touch tester runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more device tests here.
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