Samsung Galaxy S24 (SM-S921B) / Samsung Galaxy S23

Samsung Galaxy S24 (SM-S921B): Galaxy S24, global SM-S921B (8 GB / 128 GB, Nano-SIM + eSIM). The US SM-S921U uses a different processor; the Galaxy S24+ and S24 Ultra are separate models.

Samsung Galaxy S23: Galaxy S23 (2023); 8 GB RAM, 128 or 256 GB (options vary by market). The Galaxy S23+, S23 Ultra and S23 FE are separate models.

SpecificationSamsung Galaxy S24 (SM-S921B)Samsung Galaxy S23
Release year20242023
Model codeSM-S921B/DS; Nano-SIM + eSIM or dual eSIM Samsung—
Display6.2-inch (6.0-inch with rounded corners) Dynamic AMOLED 2X; 2340 × 1080 (FHD+); adaptive 1–120 Hz; Vision Booster

The adaptive refresh rate drops to 1 Hz on static content to save power; Vision Booster adjusts tone and contrast in bright light.

Samsung		6.1-inch FHD+ Dynamic AMOLED 2X; 48–120 Hz Super Smooth refresh; 1750 nits; 240 Hz touch sampling in Game Mode

The refresh rate varies between 48 and 120 Hz depending on content. Vision Booster adjusts the picture to stay readable in bright light. The size is measured as a full rectangle; the visible area is smaller.

Samsung
Processor10 cores; 3.2 GHz, 2.9 GHz, 2.6 GHz and 1.95 GHz clusters

Samsung notes that the processor varies by market; the US SM-S921U does not use the same chip as this global model.

Samsung		Snapdragon 8 Gen 2 Mobile Platform for Galaxy

Samsung introduced this version as a Snapdragon optimised for Galaxy and exclusive to the S23 series at launch.

Samsung
Memory and storage8 GB RAM; 128 GB (about 103.9 GB available)

The series also has 256 and 512 GB and 12 GB RAM configurations; there is no microSD slot.

Samsung		8 GB RAM; 128 GB or 256 GB

Usable space is lower because of preloaded software.

Samsung
Rear cameras50 MP wide (ƒ/1.8, OIS, 85°); 10 MP 3x telephoto (ƒ/2.4, 36°); 12 MP ultra-wide (ƒ/2.2, 120°)

3x optical zoom uses the separate telephoto lens; the 2x option crops the main sensor at optical quality, and digital zoom reaches 30x.

Samsung		50 MP Wide (F1.8, 85°), 12 MP Ultra Wide (F2.2, 120°), 10 MP Telephoto (3x optical, F2.4, 36°)

The telephoto gives 3x optical zoom; zoom beyond that is digital.

Samsung
Video8K (7680 × 4320) at 30 fps; slow motion at UHD 120 fps and FHD 240 fps Samsung—
Front camera12 MP, ƒ/2.2, 80° Samsung12 MP (F2.2, 80°) Samsung
Battery and charging4000 mAh typical (3880 mAh rated); about 50% in 30 minutes with a 25 W adapter and 3 A cable; Fast Wireless Charging 2.0; Wireless PowerShare

Wireless PowerShare lets the back of the phone wirelessly charge small devices such as a watch or earbud case. No adapter is included.

Samsung		—
Rated battery lifeUp to 29 hours of video playback; rated for at least 2000 charge cycles; energy efficiency class A

The 2000-cycle figure comes from the EU label, which targets the battery keeping a set share of its capacity over that span.

Samsung		—
Connectivity5G; Wi-Fi 6E (2.4 + 5 + 6 GHz); Bluetooth 5.3; NFC; USB Type-C (USB 3.2 Gen 1)

The 6 GHz band needs a Wi-Fi 6E router.

Samsung		5G, LTE, Wi‑Fi 6E, Wi‑Fi Direct, Bluetooth 5.3

Wi‑Fi 6E needs a router with 6 GHz support; availability varies by market and provider.

Samsung
Location and sensorsGPS, GLONASS, BeiDou, Galileo, QZSS; accelerometer, barometer, fingerprint, gyro, geomagnetic, Hall, light and proximity sensors Samsung—
Operating systemShipped with Android 14 and One UI 6.1; seven generations of OS upgrades and seven years of security updates

Samsung’s UK page lists security updates for this model until 31 January 2031; timing can vary by market.

Samsung		Android 13 with One UI 5.1 at launch

Samsung promised four Android OS upgrades and five years of security updates for the S23 series; timing varies by model and market.

Samsung
DurabilityIP68 (up to 1.5 m of fresh water for up to 30 minutes) Samsung—
Size and weight147.0 × 70.6 × 7.6 mm; 167 g Samsung70.9 × 146.3 × 7.6 mm; 168 g Samsung
ColoursOnyx Black, Marble Grey, Cobalt Violet, Amber Yellow; extra online colours Samsung—
Cover glass—Corning Gorilla Glass Victus 2

According to Samsung, the S23 series is the first S series to use Victus 2 glass.

Samsung
Battery—3900 mAh (typical); rated minimum 3785 mAh

The typical value is the average from third-party lab tests; the rated value is the minimum capacity across battery samples.

Samsung
Charging—Wired: about 50% in around 30 minutes with a 25 W adapter and 3 A USB‑C cable; Fast Wireless Charging 2.0; Wireless PowerShare

The adapter is sold separately. Wired charging is compatible with QC2.0 and AFC. PowerShare needs the battery above 30% to charge another device.

Samsung
Water resistance—IP68 (up to 1.5 m of fresh water for up to 30 minutes)

Samsung does not advise beach or pool use.

Samsung
Security—Samsung Knox and Knox Vault Samsung