Samsung Galaxy S24 (SM-S921B) / Samsung Galaxy S23+ (SM-S916B)

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+ (SM-S916B): Galaxy S23+ SM-S916B (2023, international version); 8 GB RAM with 256 or 512 GB. The Galaxy S23, S23 Ultra and S23 FE are separate models; US versions carry different model codes.

SpecificationSamsung Galaxy S24 (SM-S921B)Samsung Galaxy S23+ (SM-S916B)
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		6.6-inch FHD+ (2316 × 1080) Dynamic AMOLED 2X; 48–120 Hz Super Smooth refresh; 1,750 nits; 240 Hz touch sampling in Game Mode

The refresh rate varies between 48 and 120 Hz depending on content; the lower rate on static screens saves battery. Vision Booster adjusts contrast and colour to keep the screen readable in bright light. The size is measured as a full rectangle; the viewable area is smaller because of the rounded corners and camera hole.

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; 256 GB or 512 GB

Available storage 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		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. According to Samsung the wide camera records 8K video at 30 fps.

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 that supports 6 GHz; band availability varies by market and operator.

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 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 Samsung76.2 × 157.8 × 7.6 mm; 196 g Samsung
ColoursOnyx Black, Marble Grey, Cobalt Violet, Amber Yellow; extra online colours Samsung—
Front and back glass—Corning Gorilla Glass Victus 2

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

Samsung
Battery—4,700 mAh (typical); rated minimum 4,565 mAh

The typical value is the average of battery samples measured by a third-party lab under IEC 61960; the rated value is the minimum capacity.

Samsung
Charging—Wired: about 65% in around 30 minutes with a 45 W adapter and 5 A USB-C cable; Fast Wireless Charging 2.0; Wireless PowerShare

45 W needs a 5 A cable; the adapter is sold separately. Wired charging is compatible with QC2.0 and AFC, wireless with WPC. PowerShare needs more than 30% battery to charge another device. The S23 is limited to 25 W.

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