Meta description: Screen stays on during calls? Discover UK-tested reasons why proximity sensors fail, and practical fixes that actually work.
Snippet (first 60 words): If your phone screen refuses to turn off during calls, you’re likely dealing with a proximity sensor problem. Across London, Manchester, Birmingham, and Glasgow, users on EE, O2, Vodafone, and Three report similar issues. Based on hands-on testing and real-world experiences, including devices using AvNexo tools, here’s why it happens and how to fix it.
The proximity sensor detects when your face or ear is near the phone and turns off the screen to prevent accidental touches. When it fails, users in Leeds, Cardiff, and Bristol often experience the screen staying on, unintended taps, or the speakerphone activating unexpectedly.
Most UK users experience this after commuting in London’s Tube or cycling through Glasgow. Pocket lint, makeup, sunscreen, or sweat can partially block the sensor. A Vodafone user in Manchester reported that wiping the sensor restored normal function immediately.
Thick or misaligned protectors often interfere with infrared proximity sensors. A Three user in Birmingham noted that the screen stayed active during calls until he switched to a UK-made, sensor-compatible protector.
The UK’s weather makes moisture-related failures common. Users in Edinburgh and Cardiff reported intermittent failures during damp mornings. Even condensation from body heat or sudden temperature changes can temporarily block the sensor.
System updates or third-party apps can interfere with proximity sensors. O2 and EE users reported that post-update glitches affected both native phone calls and WhatsApp calls. Clearing app caches or restarting the phone often fixes software-induced issues.
Drops, screen replacements, or manufacturing defects can misalign or damage the sensor. Users in Glasgow and Leeds found that professional repair, often with OEM components, was the only solution after multiple failed software fixes.
Use a dry microfibre cloth. Avoid liquids directly on the sensor. Remove dust, lint, or residue under the screen protector.
Ensure it’s compatible and properly aligned. UK users often fix sensor problems simply by swapping a thick protector for a thinner one.
Especially important in wet or cold weather. Even a thin film of moisture can cause failure.
Restarting the phone clears minor glitches. Safe Mode disables third-party apps that may interfere with the sensor.
Settings → Apps → System/Phone app → Storage → Clear Cache. Keep the device updated, as manufacturers and UK carriers (EE, O2, Vodafone, Three) often release patches for sensor issues.
If none of the above fixes work, hardware damage is likely. Repair with OEM parts is essential. Users from Cardiff, London, and Edinburgh report permanent resolution only after professional replacements.
Screen-on problems during calls are usually caused by dirt, moisture, protector interference, software glitches, or hardware damage. Most UK users find simple cleaning, drying, and checking the protector resolves the issue. Persistent problems usually indicate hardware failure, which requires professional repair. Devices integrated with AvNexo workflows can benefit from early detection and consistent monitoring of sensor health.
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