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Samsung Galaxy S25 Ultra vs Samsung Galaxy S8

Every spec side by side, from each maker's published figures.

Better figure, where one is clearly better

SamsungGalaxy S25 UltraSamsungGalaxy S8
Overview
ReleasedFebruary 2025April 2017
Display
Screen size6.9″5.8″
Resolution3120 × 14402960 × 1440
Sharpness498 pixels per inch568 pixels per inch
PanelLTPO OLEDOLED
Refresh rate120 Hz60 Hz
Peak brightness2,600 nits–
Display typeDynamic AMOLED 2X, Quad HD+, 16M colours; Super Smooth 120 Hz adaptive refresh rate (1–120 Hz); 6.9 inches as a full rectangle, 6.8 inches allowing for the rounded cornersInfinity Display, dual edge Super AMOLED, Quad HD+ (2,960 × 1,440), 18.5:9, 16M colours; Mobile HDR Premium certified
Pixel density–570 ppi
Always-on display–Always-on display
Screen protectionCorning Gorilla Armor 2 (glass-ceramic with an anti-reflective surface treatment)Corning Gorilla Glass 5 front and back
Display featuresVision booster; Adaptive colour tone; ProScaler image upscaling–
Performance
ChipSnapdragon 8 Elite for GalaxyExynos 8895
Memory12 GB4 GB
Storage256 GB, 512 GB, 1 TB64 GB
CPUOcta-core (4.47 GHz, 3.5 GHz); 3 nm64-bit, 10 nm, octa-core (quad 2.3 GHz + quad 1.7 GHz) in the UK; 4 GB of LPDDR4 RAM
GPUReal-time ray tracing; Vulkan optimisationMali-G71 MP20
Storage type–64 GB UFS 2.1 (52.3 GB available); microSD card slot up to 256 GB
CoolingLarger vapour chamber with a new thermal interface material (TIM)–
Cameras
Main camera200 MP12 MP
Ultra wide camera50 MPNone
Telephoto camera50 MPNone
Optical zoom5×None
Front camera12 MP8 MP
Main camera200 MP wide, F1.7, 85° field of view, OIS, autofocus; Adaptive Pixel sensorDual Pixel 12 MP, F1.7, OIS
Ultra wide camera50 MP, F1.9, 120° field of view; macro shots–
Telephoto camera50 MP, F3.4, 22° field of view, OIS, 5x optical zoom–
Second telephoto camera10 MP, F2.4, 36° field of view, OIS, 3x optical zoom–
Front camera12 MP, F2.2, 80° field of view, autofocus8 MP, autofocus, F1.7
Zoom3x and 5x optical zoom; 2x and 10x optical-quality zoom (Adaptive Pixel sensor); Space Zoom up to 100x digital–
Video recordingUp to 8K (7680 × 4320) at 30 fps; 10-bit HDR recording by default; Log video; slow motion at 240 fps (FHD) and 120 fps (FHD and UHD)UHD 4K (3,840 × 2,160) at 30 fps
Camera featuresProVisual Engine; Nightography; Audio Eraser; Expert RAW; Filters made from your own photos–
Battery and charging
Battery5,000 mAh3,000 mAh
Video playback (maker's claim)Up to 31 hoursUp to 16 hours
Wired chargingUp to 45 W–
Wireless chargingUp to 15 WYes (wattage not published)
Battery life detail5,000 mAh typical, 4,855 mAh rated; at least 2,000 charge cycles; EU energy class B, 44 h 54 min per charge cycleInternet use up to 11 hours (3G), 12 hours (LTE) or 14 hours (Wi-Fi); audio playback up to 44 hours (67 hours with Always On Display off); talk time up to 20 hours (3G)
Wired chargingUp to 65% in around 30 minutes with a 45 W adapter (sold separately); compatible with QC2.0 and AFC/PDFast wired charging over USB-C
Wireless chargingFast Wireless Charging 2.0 (WPC Qi); Qi certified at 15 W (Extended Power Profile)Fast wireless charging (WPC and AirFuel)
Charges other devicesWireless PowerShare–
Connectivity
Satellite messagingYes–
Mobile network5G Sub6 (FDD, TDD, SDL); 4G LTE (FDD, TDD); 3G WCDMA; 2G GSMLTE Cat 16, gigabit LTE ready
SIMTwo nano-SIMs, nano-SIM and eSIM, or dual eSIMNano-SIM; the SIM tray also holds the microSD card
Wi-FiWi-Fi 7 (802.11a/b/g/n/ac/ax/be), 2.4, 5 and 6 GHz, EHT320, MIMO, 4096-QAMWi-Fi 802.11a/b/g/n/ac (2.4 and 5 GHz), VHT80 MU-MIMO, 1024-QAM
BluetoothBluetooth 5.4Bluetooth 5.0 (LE up to 2 Mbps); ANT+
Ultra WidebandYes–
NFCYesYes, and MST for Samsung Pay
Satellite featuresWorks with O2 Satellite in the UK (texts, supported apps, maps and location sharing where O2 has no signal; not emergency calls)–
USBUSB Type-C, USB 3.2 Gen 1USB Type-C, USB 3.1 Gen 1; 3.5 mm headphone jack
PositioningGPS, Glonass, Beidou, Galileo, QZSSGPS, Galileo, Glonass, BeiDou
Design
TypeStandardStandard
Weight218 g155 g
Thickness8.2 mm8 mm
Height × width162.8 × 77.6 mm148.9 × 68.1 mm
Water and dust resistanceIP68IP68
StylusYes–
MaterialsTitanium frame (not the volume and side keys)Gorilla Glass 5 front and back with an aluminium frame
ColoursTitanium Silverblue, Titanium Black, Titanium Grey, Titanium Whitesilver; Titanium Jetblack, Titanium Jadegreen and Titanium Pinkgold (Samsung.com only)Midnight Black and Orchid Grey at UK launch; Coral Blue, Arctic Silver and Rose Pink later in the UK; Maple Gold and Burgundy Red in other markets
Buttons–Bixby button
Water resistance detailIP68, tested for submersion in up to 1.5 m of fresh water for up to 30 minutes; not advised for beach or pool useIP68
BiometricsFingerprint sensorIris scanner, fingerprint sensor (rear), face recognition
SensorsAccelerometer, barometer, fingerprint sensor, gyro sensor, geomagnetic sensor, Hall sensor, light sensor, proximity sensorAccelerometer, barometer, fingerprint, gyro, geomagnetic, Hall, heart rate, iris, pressure, proximity, RGB light
SpeakersStereo speakers–
Software
Operating systemAndroidAndroid
Software at launchOne UI 7 (Android 15)Android 7.0 (Nougat)
Software updatesSeven generations of OS upgrades and seven years of security updates; security updates until 31 January 2032 (UK)–
AI featuresGalaxy AI, including Now Brief, Now Bar and Audio Eraser; Circle to Search with Google (finger or S Pen); Gemini on the side buttonBixby; Samsung DeX

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