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

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 Ultra: Galaxy S23 Ultra (2023): 8 GB + 256 GB, 12 GB + 512 GB or 12 GB + 1 TB. Every market uses the Snapdragon 8 Gen 2 for Galaxy. The Galaxy S23 and S23+ and the later S24 Ultra are separate models.

SpecificationSamsung Galaxy S24 (SM-S921B)Samsung Galaxy S23 Ultra
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		6.8-inch QHD+ Edge Dynamic AMOLED 2X; 1–120 Hz adaptive refresh; 1750 nits; 240 Hz touch sampling in Game Mode

Adaptive refresh drops to as low as 1 Hz when content is static to save power and rises to 120 Hz when scrolling and gaming. Vision Booster adjusts colour and contrast in bright conditions across three lighting levels; the edge curve is reduced compared with the S22 Ultra.

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 says the vapour chamber is larger on every S23-series model.

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 + 256 GB, 12 GB + 512 GB or 12 GB + 1 TB

Memory depends on the storage option; usable space is lower because of preloaded software. There is no memory card slot.

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		200 MP Wide (F1.7, 85°), 12 MP Ultra Wide (F2.2, 120°), 10 MP 3x telephoto (F2.4, 36°), 10 MP 10x telephoto (F4.9, 11°)

The 200 MP sensor outputs 200, 50 or 12 MP images through pixel binning. 100x Space Zoom combines 10x optical with 10x AI-assisted digital zoom; image quality may deteriorate beyond 10x. The optical stabilisation angle was doubled compared with the S22 Ultra.

Samsung
Video8K (7680 × 4320) at 30 fps; slow motion at UHD 120 fps and FHD 240 fps SamsungUp to 8K at 30 fps

The Expert RAW app (downloaded separately from the Galaxy Store) offers RAW capture at up to 50 MP.

Samsung
Front camera12 MP, ƒ/2.2, 80° Samsung12 MP, F2.2, 80°

On the S23 series the front camera gets fast autofocus and 60 fps Super HDR.

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		5000 mAh (typical; rated minimum 4855 mAh); 45 W wired charging; Fast Wireless Charging 2.0; Wireless PowerShare

45 W requires a separately sold 45 W adapter and a 5 A USB-C cable; wired charging is compatible with QC2.0 and AFC. Wireless PowerShare charges Qi-compatible devices from the back of the phone when the battery is above 30%.

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

Using Wi‑Fi 6E’s 6 GHz band needs a Wi‑Fi 6E router and market availability.

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		—
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 Samsung78.1 × 163.4 × 8.9 mm; 234 g Samsung
ColoursOnyx Black, Marble Grey, Cobalt Violet, Amber Yellow; extra online colours Samsung—
Front and back glass—Corning Gorilla Glass Victus 2; Armor Aluminum frame

According to Samsung, the S23 series was the first S series to use Gorilla Glass Victus 2.

Samsung
Software and updates—Launched with Android 13 and One UI 5.1; four Android OS upgrades and five years of security updates

Update timing can vary by model and market.

Samsung
Security—Samsung Knox, Knox Vault

Knox Vault keeps critical data in separate hardware isolated from the operating system.

Samsung
Water resistance—IP68 (up to 30 minutes at 1.5 metres in fresh water)

Samsung does not recommend beach or pool use.

Samsung