Samsung Galaxy S24 (SM-S921B) / Apple iPhone 15 Plus

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.

Apple iPhone 15 Plus: iPhone 15 Plus; 128, 256 and 512 GB. Apple’s spec page lists model numbers A3090 and A3094; models sold outside the US have a SIM tray. The iPhone 15, 15 Pro and 15 Pro Max are separate models.

SpecificationSamsung Galaxy S24 (SM-S921B)Apple iPhone 15 Plus
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		6.7-inch Super Retina XDR OLED; 2796 × 1290, 460 ppi; Dynamic Island, True Tone, Wide colour (P3)

Dynamic Island uses the front camera cut-out as an area for notifications and Live Activities. Apple does not list ProMotion for this model; the display is not 120 Hz. Because the corners are rounded, the actual viewable area is slightly smaller than the 6.69-inch rectangle.

Apple
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		A16 Bionic; 6-core CPU (2 performance + 4 efficiency), 5-core GPU, 16-core Neural Engine Apple
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		—
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		48MP Main (26 mm, ƒ/1.6, sensor-shift OIS); 12MP Ultra Wide (13 mm, ƒ/2.4, 120°); 12MP 2x Telephoto (52 mm, ƒ/1.6)

The 2x telephoto is not a separate lens; it uses the centre of the 48 MP main sensor (Apple says it is “enabled by quad-pixel sensor”). Photos can be 24 MP or 48 MP; digital zoom goes up to 10x.

Apple
Video8K (7680 × 4320) at 30 fps; slow motion at UHD 120 fps and FHD 240 fps Samsung4K at 24/25/30/60 fps; HDR video with Dolby Vision up to 4K at 60 fps; Cinematic mode up to 4K HDR at 30 fps; Action mode up to 2.8K at 60 fps

Action mode crops the image to apply strong digital stabilisation when running or in a vehicle, which is why it tops out at 2.8K.

Apple
Front camera12 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		—
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		—
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 Samsung160.9 × 77.8 × 7.80 mm; 201 g Apple
ColoursOnyx Black, Marble Grey, Cobalt Violet, Amber Yellow; extra online colours SamsungBlack, Blue, Green, Yellow, Pink Apple
Brightness and contrast—1,000 nits typical; 1,600 nits peak (HDR); 2,000 nits peak (outdoor); 2,000,000:1 contrast

The outdoor peak is used briefly in strong sunlight; the HDR peak applies to HDR video and photos.

Apple
Storage—128 GB, 256 GB or 512 GB Apple
Front camera and Face ID—12MP TrueDepth (ƒ/1.9, autofocus); Face ID Apple
Wireless—5G (sub-6 GHz, 4x4 MIMO); Wi-Fi 6 (802.11ax) with 2x2 MIMO; Bluetooth 5.3; second-generation Ultra Wideband; NFC with reader mode

Ultra Wideband shows the direction and distance of a nearby item or friend in Find My; availability varies by region. This UK page does not list mmWave 5G.

Apple
Safety features—Emergency SOS via satellite and Roadside Assistance via satellite; Crash Detection

Satellite features work only in certain countries and in open areas without mobile or Wi-Fi coverage.

Apple
Battery—Up to 26 hours video playback, 20 hours streamed, 100 hours audio; built-in lithium-ion

Apple quotes 6 hours more video playback than the iPhone 15.

Apple
USB-C and charging—USB-C, USB 2 (up to 480 Mb/s), DisplayPort; up to 50% in around 30 minutes with a 20W adapter; MagSafe up to 15W, Qi up to 7.5W

Although the port is USB-C, data speed is USB 2. Native DisplayPort output over USB-C mirrors video up to 4K HDR. No power adapter is included; a USB-C charge cable that supports fast charging is in the box.

Apple
SIM—Dual SIM (nano-SIM and eSIM); Dual eSIM support

The SIM tray is on models sold outside the US; eSIM use depends on carrier support.

Apple
Durability and materials—IP68 (maximum depth of 6 metres up to 30 minutes, IEC 60529); aluminium design, Ceramic Shield front, colour-infused glass back Apple