Touchscreen Test
Draw on the canvas to test your touchscreen. Multi-touch is supported.
How to Use This Test
- Open this page on your touchscreen device (phone, tablet, or touch-enabled laptop)
- Draw on the canvas area with your finger or stylus to test responsiveness
- Use multiple fingers simultaneously to check multi-touch support and touch point count
What This Test Checks
The touchscreen test provides a full-screen drawing canvas that captures and visualizes every touch input. It helps you verify that your device's touch digitizer is working correctly.
- Touch responsiveness -- confirms the screen reacts accurately to finger and stylus input
- Multi-touch support -- shows how many simultaneous touch points your device can handle
- Dead zones -- reveals areas of the screen that fail to register touch input
- Ghost touches -- detects phantom inputs that appear without any actual screen contact
Troubleshooting
If you're having issues with the touchscreen test:
- Remove your screen protector temporarily -- thick or low-quality protectors can reduce touch sensitivity
- Clean the screen with a soft, dry cloth to remove oils and debris that interfere with touch detection
- Make sure your fingers are dry -- wet or sweaty fingertips can cause inaccurate touch registration
- Disable any accessibility settings that may alter touch behavior, such as touch accommodations
- If certain zones are unresponsive, try restarting the device before suspecting hardware failure
Frequently Asked Questions
How many touch points does my device support?
Most modern smartphones support 5 to 10 simultaneous touch points. Tablets typically support 10 or more. The test displays the number of active touch points in real time so you can verify your device's multi-touch capability by placing multiple fingers on the screen.
Why are some areas of my touchscreen not responding?
Unresponsive zones can be caused by a cracked digitizer, liquid damage, a faulty ribbon cable, or a screen protector that is too thick. Try removing any screen protector and cleaning the screen. If the issue persists, the touchscreen hardware may need professional repair.
Does this test work with a stylus or Apple Pencil?
Yes, this test responds to any touch input including passive styluses, active pens like the Apple Pencil or Samsung S Pen, and your fingers. The drawing canvas will register input from all these devices, letting you check responsiveness and accuracy.
Can I use this test to check for ghost touches?
Yes. Leave the test canvas open without touching the screen. If you see dots or lines appearing on their own, your device has ghost touch issues, which are usually caused by a failing digitizer, electrical interference, or a damaged display connector.
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