Ghost touch feels random, but the fault usually follows a pattern. A phone may open apps by itself only while charging. A tablet may stop drawing through one vertical strip. A Windows touch laptop may move the cursor because the touchscreen digitizer is firing invisible taps. The useful question is not only: Is my screen broken? The useful question is: Can I capture the pattern before I reset software, replace glass, or buy a used device? I published the full version with FAQ schema, source links, and the live browser tool workflow here: Ghost Touch Test Online: Find Phantom Taps, Dead Zones and Touchscreen Drift This DEV.to version keeps the practical diagnostic flow. Fast answer Open the free Touch Screen Test , clear the canvas, keep your hands away from the display, and run the 10-second ghost touch check. If marks appear while nobody touches the screen, your device is registering phantom input. Then draw slow diagonal lines across the full screen.…