some or all touches are ignored, delayed or register inconsistently
This symptom concerns the touch path. Start with a neutral DeviceOK test where available so the next step is based on evidence rather than a generic reset sequence.
Do not jump to the most invasive fix
Avoid destructive resets, unofficial driver packages, firmware flashing, or replacing hardware before the simpler detection, permission, connection and configuration checks are exhausted.
Retest the same condition
After every meaningful change, repeat the same test under the same conditions and compare the result.
Rule out the simple causes
- 1
Run DeviceOK Touchscreen Test and draw across the affected area.
- 2
Clean/dry the screen and remove a problematic case or screen protector for comparison.
- 3
Disconnect charging/accessories and restart the device if the manufacturer recommends it.
Work through the problem in order
- 1
If only one app misses touches while DeviceOK covers the area normally, prioritize that app/gesture configuration.
- 2
If the same physical region fails across apps, use the OEM's native touchscreen diagnostic where available.
- 3
Seek manufacturer service for persistent dead zones after safe software/accessory checks.
Complete touch coverage in DeviceOK makes a fully dead touch region less likely and points toward app/gesture settings.
A repeatable physical dead zone in multiple apps and OEM diagnostics is stronger hardware evidence.