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Samsung Galaxy S20 vs Samsung Galaxy S25 Ultra

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

Better figure, where one is clearly better

SamsungGalaxy S20SamsungGalaxy S25 Ultra
Overview
ReleasedMarch 2020February 2025
Display
Screen size6.2″6.9″
Resolution3200 × 14403120 × 1440
Sharpness566 pixels per inch498 pixels per inch
PanelOLEDLTPO OLED
Refresh rate120 Hz120 Hz
Peak brightness–2,600 nits
Display typeQuad HD+ Dynamic AMOLED 2X Infinity-O Display (3,200 × 1,440), HDR10+ certified; 120 Hz supported at up to FHD+ (60 Hz by default); 6.2 inches as a full rectangle, 6.1 inches with rounded cornersDynamic 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 corners
Pixel density563 ppi (Samsung)–
Brightness detailUp to 1,200 nits peak (Samsung)–
Screen protectionCorning Gorilla Glass 6 front and back (Corning)Corning Gorilla Armor 2 (glass-ceramic with an anti-reflective surface treatment)
Display features–Vision booster; Adaptive colour tone; ProScaler image upscaling
Performance
ChipExynos 990Snapdragon 8 Elite for Galaxy
Memory8 GB – 12 GB12 GB
Storage128 GB256 GB, 512 GB, 1 TB
CPU7 nm, 64-bit octa-core, 2.73 GHz + 2.5 GHz + 2 GHz; 8 GB of LPDDR5 RAM (4G) or 12 GB (5G)Octa-core (4.47 GHz, 3.5 GHz); 3 nm
GPU–Real-time ray tracing; Vulkan optimisation
Cooling–Larger vapour chamber with a new thermal interface material (TIM)
Storage type128 GB (104 GB available); microSD card slot up to 1 TB (shared with the second SIM)–
Cameras
Main camera12 MP200 MP
Ultra wide camera12 MP50 MP
Telephoto camera64 MP50 MP
Optical zoom1.06×5×
Front camera10 MP12 MP
Main camera12 MP wide-angle, F1.8, 79°, Super Speed Dual Pixel AF, OIS200 MP wide, F1.7, 85° field of view, OIS, autofocus; Adaptive Pixel sensor
Ultra wide camera12 MP, F2.2, 120°50 MP, F1.9, 120° field of view; macro shots
Telephoto camera64 MP, F2.0, 76°, PDAF, OIS; approximately 1.06x optical zoom (Notebookcheck)50 MP, F3.4, 22° field of view, OIS, 5x optical zoom
Second telephoto camera–10 MP, F2.4, 36° field of view, OIS, 3x optical zoom
Front camera10 MP, Dual Pixel AF, F2.2, 80°12 MP, F2.2, 80° field of view, autofocus
ZoomHybrid Optic Zoom 3x; Space Zoom (digital) up to 30x3x and 5x optical zoom; 2x and 10x optical-quality zoom (Adaptive Pixel sensor); Space Zoom up to 100x digital
Video recording8K (7,680 × 4,320) at 24 fps; 4K at 60 fps; up to 960 fps super slow motion at HD resolutionUp 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)
Camera featuresSingle Take; Night mode; Super Steady videoProVisual Engine; Nightography; Audio Eraser; Expert RAW; Filters made from your own photos
Battery and charging
Battery4,000 mAh5,000 mAh
Video playback (maker's claim)–Up to 31 hours
Wired chargingUp to 25 WUp to 45 W
Wireless chargingYes (wattage not published)Up to 15 W
Battery life detail4,000 mAh typical, 3,880 mAh rated; internet use up to 14 hours (LTE) or 15 hours (Wi-Fi); talk time up to 20 hours (4G)5,000 mAh typical, 4,855 mAh rated; at least 2,000 charge cycles; EU energy class B, 44 h 54 min per charge cycle
Wired charging25 W fast charger included; compatible with QC2.0 and AFCUp to 65% in around 30 minutes with a 45 W adapter (sold separately); compatible with QC2.0 and AFC/PD
Wireless chargingFast Wireless Charging 2.0 with chargers of 10 W or more (WPC)Fast Wireless Charging 2.0 (WPC Qi); Qi certified at 15 W (Extended Power Profile)
Charges other devicesWireless PowerShareWireless PowerShare
Design
TypeStandardStandard
Weight163 g218 g
Thickness7.9 mm8.2 mm
Height × width151.7 × 69.1 mm162.8 × 77.6 mm
Water and dust resistanceIP68IP68
Stylus–Yes
MaterialsGorilla Glass 6 front and back with a metal frameTitanium frame (not the volume and side keys)
ColoursCosmic Grey, Cloud Blue, Cloud PinkTitanium Silverblue, Titanium Black, Titanium Grey, Titanium Whitesilver; Titanium Jetblack, Titanium Jadegreen and Titanium Pinkgold (Samsung.com only)
Water resistance detailIP68, up to 1.5 m for 30 minutesIP68, tested for submersion in up to 1.5 m of fresh water for up to 30 minutes; not advised for beach or pool use
BiometricsUltrasonic in-screen fingerprint sensor, face recognitionFingerprint sensor
SensorsUltrasonic fingerprint, accelerometer, barometer, gyro, geomagnetic, Hall, proximity, RGB lightAccelerometer, barometer, fingerprint sensor, gyro sensor, geomagnetic sensor, Hall sensor, light sensor, proximity sensor
SpeakersStereo speakers and earphones sound by AKG; Dolby AtmosStereo speakers
Software
Operating systemAndroidAndroid
Software at launchAndroid 10One UI 7 (Android 15)
Software updates–Seven generations of OS upgrades and seven years of security updates; security updates until 31 January 2032 (UK)
AI features–Galaxy AI, including Now Brief, Now Bar and Audio Eraser; Circle to Search with Google (finger or S Pen); Gemini on the side button
Connectivity
Satellite messaging–Yes
Mobile network5G model: 5G Sub6 (NSA, SA, DSS); both models: LTE Cat 20 (up to 2.0 Gbps down, 200 Mbps up), 4×4 MIMO, up to 7CA, LAA5G Sub6 (FDD, TDD, SDL); 4G LTE (FDD, TDD); 3G WCDMA; 2G GSM
SIMHybrid dual SIM (nano-SIM plus nano-SIM or microSD) and eSIMTwo nano-SIMs, nano-SIM and eSIM, or dual eSIM
Wi-FiWi-Fi 6 (802.11a/b/g/n/ac/ax), 2.4 and 5 GHz, HE80, MIMO, 1024-QAMWi-Fi 7 (802.11a/b/g/n/ac/ax/be), 2.4, 5 and 6 GHz, EHT320, MIMO, 4096-QAM
BluetoothBluetooth 5.0; ANT+Bluetooth 5.4
Ultra Wideband–Yes
NFCYesYes
Satellite features–Works with O2 Satellite in the UK (texts, supported apps, maps and location sharing where O2 has no signal; not emergency calls)
USBUSB Type-C; no 3.5 mm headphone jackUSB Type-C, USB 3.2 Gen 1
PositioningGPS, Galileo, Glonass, BeiDouGPS, Glonass, Beidou, Galileo, QZSS

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