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Glossary

OLED / AMOLED

A screen type where every pixel makes its own light — deep blacks, high contrast and an option for always-on display.

In an OLED screen each pixel produces its own light, so black pixels are fully off: deep blacks, high contrast and good efficiency with dark themes. AMOLED (active-matrix OLED) is the type used in phones; makers give it brand names such as Dynamic AMOLED or Super Retina XDR. Very long static images can cause burn-in over years.

Also called: amoled, super amoled, dynamic amoled, poled

More terms

Gorilla Glass / ArmorCorning's toughened cover glass. Newer versions resist drops and scratches better; no glass is unbreakable.VRAM (video memory)Memory on the graphics card for textures and frames. More VRAM helps at high resolution and with AI models.mAh (milliamp-hour)A measure of battery charge. More mAh usually means a bigger battery, but battery life also depends on the screen, chip and software.Boost clock (GHz)The highest speed a CPU or GPU runs for short bursts when cooling and power allow.OS upgrades and security updatesHow long the maker promises new Android/iOS versions and security fixes. Longer support = safer, longer-lasting phone.TDP / TGP (W)The power a CPU or graphics card is designed to use under load, in watts. It decides the cooler and power supply you need.

All glossary terms