Tech Dictionary
RCS gives normal texts read receipts, typing indicators, and sharp photos on Android and iPhone. Here is how it works, how to check you have it, and what is and is not encrypted in 2026.
Tech Dictionary
HDMI 2.1 means 48 Gbps, 4K at 120Hz, eARC and VRR — but not every port labelled 2.1 delivers all of it. Here is what the number actually guarantees, and what it does not.
Tech Dictionary
NFC is the short-range wireless tech behind tap-to-pay, transit cards, and tap-to-pair. Here is how a tap works, why the range is only about 4 centimetres, and whether it is safe.
Tech Dictionary
No plastic card, no tray: an eSIM stores your carrier plan on a chip inside your phone. How it works, which phones have it, and when it beats a physical SIM.
Tech Dictionary
Auracast lets one Bluetooth source broadcast audio to many listeners at once, with no pairing. Here is how it works, what you need, and why support is still patchy.
Tech Dictionary
Refresh rate is how often your screen redraws each second. Here is how 60Hz, 120Hz, and 144Hz differ, how Hz differs from fps, and what VRR does.
Tech Dictionary
Qi2 is wireless charging with magnets that snap your phone into perfect alignment. Here is how 15W and 25W differ, what Qi2 Ready really means, and which phones support it.
Tech Dictionary
Burn-in is a permanent ghost left by static logos, tickers, and game bars — but most of what people see is temporary retention. Here is the difference and how to prevent it.
Tech Dictionary
A passkey signs you in with your face, finger, or PIN — no password to remember or type into a fake site. Here's how it works and how to create your first one.
Tech Dictionary
A VPN encrypts your traffic and hides your IP address — but it doesn't make you anonymous or protect you from malware. Here's what it actually does, and when it's worth using.
Tech Dictionary
IP68 sounds like a promise that your phone can survive anything wet. It is actually a lab-tested code with limits — here is how to read it.