What to test, and what to replace it with
These tools exist to tell you whether a screen is worth keeping. If it is not, these are the panels worth running the same tests on instead.
LG C4 65 in OLED evo
The panel most of these test patterns are written against. OLED is where the dead-pixel and uniformity tests actually matter.
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Samsung S90F 65 in OLED
The main alternative to the C4 at the same size, and the one worth running the same tests on before you keep it.
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Calibrite Display Pro HL Colorimeter
Test patterns tell you something is wrong. A colorimeter tells you by how much, and fixes it.
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Dell UltraSharp U2722D
The safe QHD desk monitor when a test turns up a panel you do not want to keep.
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💻 Mobile & Computing
iPhone Testing Guide
Battery, screen, buttons & more
Android Phone Testing
Samsung, Pixel, OnePlus & more
Laptop Testing Guide
Complete inspection checklist
MacBook Testing Guide
M1/M2/M3 specific tests
iPad Testing Guide
All iPad models covered
Android Tablet Testing
Galaxy Tab, Fire & more
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Kindle, Kobo, Nook
Gaming PC Testing
Pre-built desktop testing
🏢 Office & Home Setup
Best Standing Desk 2026
FlexiSpot, Uplift, Fully Jarvis
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Herman Miller, Steelcase, Branch
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CalDigit TS4, Anker, Plugable
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Complete setup guide by budget
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Secretlab, Arozzi, Uplift
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ASUS ROG, Samsung, LG
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Elgato, Shure, Sony cameras
🎮 Gaming
Gaming Console Testing
PS5, Xbox, Switch
Console Testing Guide
PS5, Xbox, Switch
GPU Testing Guide
Graphics card testing
Controller Drift Testing
Detect joystick issues
Mechanical Keyboard
Switch & key testing
Gaming Mouse Testing
Sensor, buttons, scroll
Steam Deck / Handheld
Portable gaming devices
VR Headset Testing
Quest, PSVR, Index
🖥️ Monitors & TVs
Monitor Testing Guide
Dead pixels, backlight, colors
Gaming Monitor Testing
Response time, refresh rate
Smart TV Testing
Panel, smart features, HDR
Ultrawide Monitor Guide
21:9 and 32:9 testing
OLED Burn-In Testing
Detect image retention
Backlight Bleed Testing
IPS glow, light leakage
Projector Testing
Lamp hours, image quality
Multi-Monitor Setup
Matching displays
🎧 Audio Equipment
Headphones Testing
Driver, padding, cable
Wireless Earbuds Testing
AirPods, Galaxy Buds & more
Bluetooth Speaker Testing
Battery, sound, waterproofing
AV Receiver Testing
Channels, HDMI, power
Soundbar Testing
Atmos, subwoofer, inputs
Turntable Testing
Motor, cartridge, platter
Studio Monitor Testing
Frequency response
Digital Piano Testing
Keys, sounds, connectivity