Blog
Tests
Guides for testing your keyboard, mouse, screen, sound, network and other hardware, and for fixing what the tests find.
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Tests
How to check a phone after a screen replacement
Check touch, display, sensors, brightness, and call functions after a phone screen repair, and learn which problems need a repair shop.
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Tests
Navigation arrows spin in place: what to test
Find out whether a spinning navigation arrow comes from the compass, location, phone case, or app, then test the sensors and try practical fixes.
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Tests
Camera image has color blocks: what to test
Find out whether colored blocks come from low light, a video app, a USB connection, or the camera itself, then check the right fix.
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Tests
Webcam flickers under LED office lighting: how to fix it
Find out why LED lights create webcam flicker, test whether the lighting or camera is responsible, and try practical fixes for smoother video.
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Tests
Why the same website behaves differently by browser
Learn why a website works differently in two browsers, how to compare browser versions and settings, and what to change to fix it.
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Tests
How to compare print quality before and after cleaning
Print the same test page before and after a printer cleaning to see whether streaks, missing lines, or uneven color actually improve.
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Tests
Why black text looks blurry on printed pages
Learn why black text prints blurry, use a printer test page to spot the pattern, and check settings, paper, ink or toner before replacing parts.
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Tests
Why a mobile browser cannot access every sensor
Learn why a phone browser may show only some sensor readings, how to check permissions and compatibility, and what you can try next.
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Tests
Why a mouse behaves oddly on a soft mouse pad
Learn why a soft mouse pad can cause skipping, jitter, or slow tracking, how to compare surfaces with a browser test, and what to change next.
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Tests
How to test your network while someone else is streaming
Compare connection stability before and during a stream, read the results, and find out whether Wi-Fi, congestion, or another issue needs attention.
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Tests
Can upload speed limits make video meetings smoother?
Learn when an upload cap can reduce lag in video meetings, how to test for bufferbloat, and what to change on your router.
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Tests
Test a monochrome printer with a color test page
Print a color test page on a monochrome printer to check gray tones, black density, banding, and text, then separate driver settings from print defects.