Symptoms
- Pointing the camera at a QR code does nothing
- No prompt or link pops up like it usually does
- Works in one app (like a dedicated scanner) but not the default camera
- Worked before and stopped
Likely causes
- CommonQR code scanning disabled in camera settingsMany phones have a toggle to enable or disable automatic QR code detection in the camera app.
- CommonDirty lens or poor lighting reducing recognition accuracyA smudge or dim lighting can prevent the camera from reading the fine pattern of a QR code.
- CommonPhone too close, too far, or at an angle to the codeQR scanning needs the whole code clearly and squarely in frame.
- PossibleSoftware bug after an updateAn update can occasionally disable or break this feature until fixed.
What to do
- Check camera settings for a 'scan QR codes' toggle and make sure it's on.
- Clean the lens with a microfiber cloth.
- Hold the phone steady, a comfortable arm's length from the code, keeping it flat and centered in frame.
- Improve lighting on the code if it's dim or glare is present.
- Try a dedicated QR scanner app if the built-in feature still doesn't work.
- Restart the phone and check for a software update.
Tools and parts
- Microfiber cloth
When to call a pro
A repair shop isn't relevant here; this is a settings, lighting, or technique issue.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.