A touchscreen can respond to a single tap yet still miss a strip of the panel or lose one finger during a gesture. Device Status⁺ provides a Multitouch page for checking those behaviors.
Check coverage and multiple fingers
- Clean and dry your hands and the display.
- Open Hardware → Multitouch.
- Drag one finger slowly across the available test area in horizontal lines, then vertical lines.
- Look for repeatable gaps in the tracked path or coverage.
- Place two fingers on the test area and move them independently.
- Add another finger if needed and watch the active-touch count and markers.
Stay inside the app’s test area. System gestures at the edges may interrupt tracking.
How to judge a missed area
Repeat the same path several times. A consistent gap in the same location is more informative than one interrupted gesture. Test while unplugged if the issue happens during charging, then compare using known-working charging accessories.
Moisture, gloves, screen protectors and accessibility touch settings can affect interaction. A maximum finger count in one app is not a universal specification for every app or model.
What this does not test
Touch coverage does not reveal dead display pixels. For visible spots, tint or unevenness, use the separate screen color and brightness test.
If misses remain reproducible, note the location and conditions for a repair assessment.
Ready to try it?
Device Status⁺ · Monitor and test your iPhone hardware
Free on the App Store