This free online Touch Screen Test helps you check the accuracy and responsiveness of your touch-enabled display (on laptops, tablets, smartphones, or all-in-one PCs). This tool allows you to draw on the screen and, for multi-touch capable devices, can visualize multiple simultaneous touch points. It's useful for identifying dead spots (areas that don't respond to touch), ghost touches (touches registering without input), or problems with multi-touch functionality like pinch-to-zoom.

Common Touch Screen Problems & Fixes:

• Unresponsive Areas (Dead Spots):
  • Clean Screen: Dirt, grease, or even some screen protectors can interfere with touch sensitivity. Clean your screen thoroughly with a microfiber cloth.
  • Screen Protector: A poorly applied or incompatible screen protector can cause issues. Try removing it to test.
  • Recalibration: Some devices or operating systems offer a touch screen calibration tool. Check your device settings.
  • Driver Issues: Touch screen drivers might need updating or reinstalling. Check Device Manager (on Windows).
  • Hardware Damage: Physical damage to the screen can cause dead spots. This usually requires professional repair.
• Ghost Touches (Phantom Touches):
  • Dirty Screen/Moisture: Can sometimes trigger false inputs.
  • Electrical Interference/Faulty Charger: A faulty power adapter or electrical interference can sometimes cause erratic touch behavior. Try unplugging the charger.
  • Software Glitch: A temporary software bug. Restarting the device might help.
  • Hardware Issue: Could indicate a more serious hardware problem with the touch digitizer.
• Inaccurate Touch Points (Offset):
  • Calibration: Check your device manufacturer's support website or documentation to see if touch screen calibration options are available for your device.
  • Driver Issues: Ensure drivers are up to date.
• Multi-Touch Not Working (e.g., Pinch-to-Zoom):
  • Application Support: Ensure the application you're using supports multi-touch.
  • Driver/OS Issue: Check for driver updates or OS updates.
  • Hardware Limitation: Older or some specific devices might have limited multi-touch capabilities.

This touch test provides a simple way to diagnose the health and performance of your touch screen.