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Samsung Galaxy S25 Ultra vs Samsung Galaxy S6

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

Better figure, where one is clearly better

SamsungGalaxy S25 UltraSamsungGalaxy S6
Overview
ReleasedFebruary 2025April 2015
Display
Screen size6.9″5.1″
Resolution3120 × 14402560 × 1440
Sharpness498 pixels per inch576 pixels per inch
PanelLTPO OLEDOLED
Refresh rate120 Hz60 Hz
Peak brightness2,600 nits600 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 cornersQuad HD Super AMOLED, 2,560 × 1,440, 16M colours
Pixel density–577 ppi
Brightness detail–600 cd/m² for outdoor visibility
Screen protectionCorning Gorilla Armor 2 (glass-ceramic with an anti-reflective surface treatment)Corning Gorilla Glass 4 front and back
Display featuresVision booster; Adaptive colour tone; ProScaler image upscaling–
Performance
ChipSnapdragon 8 Elite for GalaxyExynos 7420
Memory12 GB3 GB
Storage256 GB, 512 GB, 1 TB32 GB, 64 GB, 128 GB
CPUOcta-core (4.47 GHz, 3.5 GHz); 3 nmOcta-core (quad 2.1 GHz + quad 1.5 GHz), 14 nm, 64-bit; 3 GB of LPDDR4 RAM
GPUReal-time ray tracing; Vulkan optimisationMali-T760 MP8
Storage type–UFS 2.0; 32, 64 or 128 GB; no microSD slot
CoolingLarger vapour chamber with a new thermal interface material (TIM)–
Cameras
Main camera200 MP16 MP
Ultra wide camera50 MPNone
Telephoto camera50 MPNone
Optical zoom5×None
Front camera12 MP5 MP
Main camera200 MP wide, F1.7, 85° field of view, OIS, autofocus; Adaptive Pixel sensor16 MP CMOS, F1.9, Smart OIS, Tracking AF, IR Detect White Balance
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, autofocus5 MP CMOS, F1.9
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 photosQuick Launch (double-press the home key); Auto Real-time HDR (front and rear); Low Light Video; Virtual Shot; Slow Motion; Fast Motion; Pro Mode; Selective Focus
Battery and charging
Battery5,000 mAh2,550 mAh
Video playback (maker's claim)Up to 31 hoursUp to 13 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 10 hours (3G); audio playback up to 49 hours; talk time up to 17 hours (3G); non-removable battery
Wired chargingUp to 65% in around 30 minutes with a 45 W adapter (sold separately); compatible with QC2.0 and AFC/PDAbout 4 hours of use from 10 minutes of charging; 1.5 times faster than the Galaxy S5
Wireless chargingFast Wireless Charging 2.0 (WPC Qi); Qi certified at 15 W (Extended Power Profile)WPC 1.1 and PMA 1.0 compatible
Charges other devicesWireless PowerShare–
Connectivity
Satellite messagingYes–
Mobile network5G Sub6 (FDD, TDD, SDL); 4G LTE (FDD, TDD); 3G WCDMA; 2G GSM4G LTE Cat 6 (300/50 Mbps); 3G bands 1, 2, 5, 8; GSM 850, 900, 1800, 1900 MHz
SIMTwo nano-SIMs, nano-SIM and eSIM, or dual eSIMNano-SIM
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 MIMO
BluetoothBluetooth 5.4Bluetooth 4.1
Ultra WidebandYes–
NFCYesYes
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 2.0 (micro-USB); 3.5 mm headphone jack; IR remote
PositioningGPS, Glonass, Beidou, Galileo, QZSSGPS, Glonass, Beidou
Design
TypeStandardStandard
Weight218 g138 g
Thickness8.2 mm6.8 mm
Height × width162.8 × 77.6 mm143.4 × 70.5 mm
Water and dust resistanceIP68–
StylusYes–
MaterialsTitanium frame (not the volume and side keys)Metal frame with Gorilla Glass 4 front and back
ColoursTitanium Silverblue, Titanium Black, Titanium Grey, Titanium Whitesilver; Titanium Jetblack, Titanium Jadegreen and Titanium Pinkgold (Samsung.com only)White Pearl, Black Sapphire, Gold Platinum, Blue Topaz
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 use–
BiometricsFingerprint sensorTouch-type fingerprint sensor in the home key
SensorsAccelerometer, barometer, fingerprint sensor, gyro sensor, geomagnetic sensor, Hall sensor, light sensor, proximity sensorAccelerometer, barometer, fingerprint, gyro, geomagnetic, Hall, heart rate, proximity, RGB light
SpeakersStereo speakers–
Software
Operating systemAndroidAndroid
Software at launchOne UI 7 (Android 15)Android 5.0 (Lollipop)
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 button–

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