Google Pixel 8a / Samsung Galaxy S24 (SM-S921B)

Google Pixel 8a: 8 GB RAM, 128/256 GB; North America GKV4X, rest of world G6GPR, Japan G576D, mmWave model G8HHN.

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.

Specification	Google Pixel 8a	Samsung Galaxy S24 (SM-S921B)
Release year	2024	2024
Display	6.1-inch Actua OLED; 1080 × 2400, 430 ppi, 20:9; always-on display The always-on display shows the time, notifications and the song playing nearby (Now Playing) at low power while the phone is locked. Google	6.2-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
Refresh rate	Smooth Display, up to 120 Hz The upper limit, 90 Hz on earlier A-series phones, rises to 120 Hz on this model; Google notes it is not available in every app. Google	—
Brightness and contrast	Up to 1,400 nits (HDR) and up to 2,000 nits peak; >1,000,000:1 contrast HDR brightness is measured with the whole screen lit and peak brightness with only 5% lit. Google	—
Cover glass and build	Corning Gorilla Glass 3 on the front; matte composite back; matte aluminium frame The aluminium in the housing and camera bar is 100% recycled; the back cover uses 76% recycled plastic. Google	—
Durability	IP67 dust and water resistance (IEC 60529) IP67 means full dust protection and resistance to brief immersion; it is one step below IP68. Protection can diminish over time. Google	IP68 (up to 1.5 m of fresh water for up to 30 minutes) Samsung
Processor	Google Tensor G3; Titan M2 security coprocessor It is the same chip as the Pixel 8 and Pixel 8 Pro. Google	10 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
Memory and storage	8 GB LPDDR5X RAM; 128 GB or 256 GB UFS 3.1 storage There is no card slot; the 256 GB option is not offered in every country. Google	8 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
Main camera	64 MP Quad PD wide; 0.8 μm pixels, f/1.89, 80° field of view, 1/1.73-inch sensor; optical + electronic stabilisation Super Res Zoom up to 8x is software magnification; there is no telephoto camera. Google	—
Ultrawide camera	13 MP; 1.12 μm pixels, f/2.2, 120° field of view, lens correction Google	—
Front camera	13 MP; f/2.2, fixed focus, 96.5° ultrawide Google	12 MP, ƒ/2.2, 80° Samsung
Video	Rear: 4K and 1080p at 30/60 fps, slow motion up to 240 fps, digital zoom up to 5x; front: 4K and 1080p at 30 fps; HEVC and AVC Google	8K (7680 × 4320) at 30 fps; slow motion at UHD 120 fps and FHD 240 fps Samsung
Battery	4,492 mAh typical (minimum 4,404 mAh); 24+ hours, up to 72 hours with Extreme Battery Saver According to Google, average battery life in testing was at least 31 hours; figures are based on a median user profile. Google	—
Charging	Wired up to 18 W (with the Google 30 W USB-C charger); Qi-certified wireless charging No charger is included; the box contains a USB-C cable and a Quick Switch adapter for transferring data from an old phone. Google	—
Wireless	Wi-Fi 6E (2.4/5/6 GHz; Wi-Fi 6 in India); Bluetooth 5.3; NFC; Google Cast Google	—
Location	GPS, GLONASS, Galileo, QZSS, BeiDou (no BeiDou in the US, NavIC added in India) Google	—
Cellular and SIM	5G Sub-6: North America GKV4X, rest of world G6GPR, Japan G576D (FeliCa); mmWave model G8HHN; single nano-SIM + eSIM Google	—
Authentication and sensors	Under-display fingerprint sensor, Face Unlock; proximity, ambient light, accelerometer, gyrometer, magnetometer, barometer Google	—
USB and audio	USB-C 3.2; stereo speakers, two microphones Google	—
Software and updates	Launched with Android 14; seven years of OS, security and Pixel Drop updates The seven years count from the first sale date on the US Google Store; this was the first A-series phone with the promise. Google	—
Dimensions and weight	152.1 × 72.7 × 8.9 mm; 189 g Google	—
Colours and warranty	Obsidian, Porcelain, Bay, Aloe; one-year warranty in the US, Canada, Japan, Taiwan, Singapore and India, two years in Europe and Australia Google	—
Model code	—	SM-S921B/DS; Nano-SIM + eSIM or dual eSIM Samsung
Rear cameras	—	50 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
Battery and charging	—	4000 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 life	—	Up 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
Connectivity	—	5G; 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 sensors	—	GPS, GLONASS, BeiDou, Galileo, QZSS; accelerometer, barometer, fingerprint, gyro, geomagnetic, Hall, light and proximity sensors Samsung
Operating system	—	Shipped 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
Size and weight	—	147.0 × 70.6 × 7.6 mm; 167 g Samsung
Colours	—	Onyx Black, Marble Grey, Cobalt Violet, Amber Yellow; extra online colours Samsung