Legion Lenovo Legion 5i Gen 10 (15, Intel) 83F0CTO1WWIN2

The maker's own model code, like SM-S928B. Regional variants of the same marketing name often differ in chipset or bands, and the model number is the only reliable way to tell which one a listing is selling.

Pixel count as width x height. Read it with the screen size: the same 1080x2400 is sharp on a 6.1-inch phone and visibly softer on a 6.9-inch one.

Pixels per inch, which is resolution and screen size combined into the number that actually decides sharpness. Around 400 ppi and above, most people stop seeing individual pixels at normal viewing distance.

How the screen makes light. LCD types use a backlight, so black is really dark grey; OLED types light each pixel individually, giving true black and better contrast. LTPO variants can drop their refresh rate to save power.

LCD

Backlit panel. Cheapest to make; blacks look grey and contrast is limited.

IPS LCD

An LCD with wide viewing angles and more accurate colour than plain LCD.

TFT LCD

A basic LCD. Viewing angles and contrast are usually the weakest of the LCD family.

OLED

Each pixel makes its own light, so black pixels are fully off. True black, high contrast.

AMOLED

Samsung's OLED family. Same self-lit behaviour as OLED.

Super AMOLED

AMOLED with the touch layer built into the panel rather than sitting above it.

LTPO AMOLED

AMOLED that can vary its refresh rate down to 1 Hz, cutting battery use on static screens.

LTPO OLED

OLED that can vary its refresh rate down to 1 Hz to save power.

MiniLED

An LCD with thousands of tiny backlight zones, narrowing the contrast gap with OLED.

How many times per second the screen redraws. 120 Hz makes scrolling look smoother than 60 Hz; the trade is battery, which is why panels that can drop back down to 1 Hz exist.

How bright the screen can get, in nits, usually quoted as a peak a small part of the screen can hit briefly. This is what decides whether the screen is readable in direct sunlight; makers often quote the peak rather than the full-screen figure.

How small the chip's transistors are, in nanometres. A smaller number generally means more work per unit of battery, so a 4 nm chip usually runs cooler and longer than a 7 nm one of similar speed.

How many processor cores the chip has. Phone chips mix fast cores for demanding work with efficient ones for background tasks, so the count alone does not rank two chips.

The top speed of the fastest core. Only comparable between chips of the same generation and family; a newer chip at a lower clock often does more work per cycle.

Working memory, which decides how many apps stay open in the background instead of reloading when you switch back. Read it with the RAM type and the software: makers advertise 'virtual RAM' borrowed from storage, which is much slower than the real thing.

The memory generation. Newer types move data faster and use less power at the same capacity, so 8 GB of LPDDR5X is not the same as 8 GB of LPDDR4X.

Built-in space for apps, photos and video, before the operating system takes its share. The usable figure is typically 10-20 GB lower than the number advertised.

How fast the built-in storage is. UFS is several times quicker than eMMC, which shows up in app install times, large file copies and how fast a big game loads.

Resolution of the selfie camera. Front cameras usually have fixed focus and smaller sensors than the rear main camera.

Battery capacity in milliamp-hours. Compare it only alongside screen size, panel type and chipset efficiency, since a bigger screen at a higher refresh rate drains a larger battery faster.

The fastest wired charging the phone accepts, in watts. Reaching it usually needs the maker's own charger and cable, and the quoted speed applies to the early part of the charge, not the last stretch.

Whether a wall charger is included. Many makers now ship a cable only, so hitting the quoted charging speed can mean buying the charger separately.

The Wi-Fi generation. The phone and the router both have to support a generation for its speed to apply, so a Wi-Fi 7 phone on a Wi-Fi 5 router runs at Wi-Fi 5.

The Bluetooth version. Later versions add range and lower-power audio, but the headphones have to support the same features for any of it to apply.

The port and its data speed. All USB-C ports charge, but a USB-C 2.0 port transfers files at a fraction of the speed of a 3.x one, which matters when moving large video files.

Whether the phone has a headphone socket. Without one, wired headphones need a USB-C adapter or a USB-C connector.

The OS version the phone shipped with, such as Android 15. Read it against the update policy: a phone launched two versions behind has already used up part of its support window.

How many years of operating-system upgrades the maker commits to. Rarely on a marketplace listing, always on the maker's own page, and together with the security window it decides how long the phone stays safe to use.

How many years the maker commits to security patches. This is the fact that decides how long the phone stays safe to bank on, and it is often shorter than the OS upgrade promise.

Height x width x thickness in millimetres. Worth reading with the weight: two phones of the same screen size can feel very different in the hand.

What the frame and back are made of, such as an aluminium frame with a glass back. Plastic backs survive drops better; glass and metal feel more solid and allow wireless charging.

The finishes this model is sold in. Some colours are exclusive to one storage tier or one region.

How many speakers carry sound. Stereo pairs sound noticeably fuller for video and games; many stereo phones use the earpiece as the second channel, so the two sides are not equally loud.

Where the fingerprint reader sits and how it works. Ultrasonic under-display readers cope better with wet or dry fingers than optical ones, which light up the screen to take a picture of the fingerprint.

A link to the maker's own specification page for this exact model. It is the source a disputed fact here should be checked against, and it outranks any marketplace listing.

Which revision of the maker's spec page these facts were read from, as a date or version. Makers quietly edit spec pages after launch, so this records which wording was in front of us.