TEST GUIDE
Observe whether the browser receives touch contacts while your hands are off the phone. This is a short screening test, not an automatic hardware diagnosis.
If nobody touched the screen but contacts were recorded, note their positions and repeat with a clean, dry screen and the charger disconnected. The test records touch events reported to this page; it cannot identify a faulty digitizer or prove that a charger caused them.
An intermittent problem may not occur in 15 seconds. Repeat when the usual symptoms appear. If the page loses focus or the run is interrupted, start again before recording a result.
Checking a used phone? Follow the Android inspection guide or iPhone inspection guide for checks this browser test cannot cover.
COMMON QUESTIONS
No. Intermittent faults may not appear during the short observation. Browser chrome and system gesture areas are outside the test.