Samsung Galaxy S24 (SM-S921B) / Samsung Galaxy S24 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 S24 Ultra: SM-S928B (international, Nano-SIM + eSIM); 12 GB RAM with 256 GB, 512 GB or 1 TB. The US model is SM-S928U. Titanium Gray, Black, Violet and Yellow; extra online colours. The Galaxy S25 Ultra and S23 Ultra are separate models.

SpecificationSamsung Galaxy S24 (SM-S921B)Samsung Galaxy S24 Ultra
Release year20242024
Model codeSM-S921B/DS; Nano-SIM + eSIM or dual eSIM SamsungSM-S928B (Nano-SIM + eSIM; dual eSIM option) 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 Dynamic AMOLED 2X; 3120 × 1440 (QHD+); 1–120 Hz adaptive; Vision Booster

The refresh rate drops as low as 1 Hz depending on content; Vision Booster adjusts tone and contrast in bright light to keep the screen readable.

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 3 for Galaxy; eight cores, 3.39 / 3.1 / 2.9 / 2.2 GHz 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		12 GB RAM; 256 GB, 512 GB or 1 TB (varies by region) 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 (ƒ/1.7, OIS); 12 MP ultra wide (ƒ/2.2, 120°); 50 MP 5× telephoto (ƒ/3.4, OIS); 10 MP 3× telephoto (ƒ/2.4, OIS)

Two separate telephoto lenses give optical quality at 3× and 5×; values in between are produced by cropping and processing.

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, ƒ/2.2, 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		5000 mAh (typical); about 65% in 30 minutes with a 45 W adapter; Fast Wireless Charging 2.0; Wireless PowerShare

The 45 W adapter is sold separately. Wireless PowerShare lets the back of the phone wirelessly charge a device such as a watch or earbuds.

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; Wi-Fi 7 (2.4 + 5 + 6 GHz); Bluetooth 5.3; USB Type-C (USB 3.2 Gen 1)

Wi-Fi 7 speeds need a Wi-Fi 7 router and vary by market. USB 3.2 Gen 1 means 5 Gb/s wired transfer.

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		Shipped with Android 14 and One UI 6.1; seven generations of OS upgrades and seven years of security updates

Samsung notes that update timing and availability may vary by model and market.

Samsung
DurabilityIP68 (up to 1.5 m of fresh water for up to 30 minutes) SamsungIP68 (up to 1.5 m in fresh water for 30 minutes); titanium frame

Samsung advises against beach and pool use.

Samsung
Size and weight147.0 × 70.6 × 7.6 mm; 167 g Samsung162.3 × 79 × 8.6 mm; 232 g (sub-6) / 233 g (mmWave) Samsung
ColoursOnyx Black, Marble Grey, Cobalt Violet, Amber Yellow; extra online colours Samsung—
Front glass—Corning Gorilla Armor

According to Corning and Samsung it cuts reflection by up to 75% versus typical glass, with improved scratch resistance.

Samsung
S Pen—Built-in S Pen Samsung
Security—Samsung Knox, Knox Vault, Auto Blocker; setting that limits AI processing to the device

With the Advanced Intelligence setting enabled, only the Galaxy AI features that run on the device are used.

Samsung