Samsung Galaxy S25 Ultra vs Xiaomi POCO F8 Ultra

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

Better figure, where one is clearly better

Galaxy S25 Ultra compared with POCO F8 Ultra
SamsungGalaxy S25 UltraXiaomiPOCO F8 Ultra
Overview
ReleasedFebruary 2025November 2025
Display
Screen size6.9″6.9″
Resolution3120 × 1440 (better)2608 × 1200
Sharpness498 pixels per inch (better)416 pixels per inch
PanelLTPO OLEDOLED
Refresh rate120 Hz120 Hz
Peak brightness2,600 nits3,500 nits (better)
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 cornersAMOLED with full RGB subpixel structure, 12-bit colour, 68 billion colours and 5,000,000:1 contrast; marketed as 6.9 inches, with approximately 6.85-inch full-rectangle diagonal stated by the maker
Brightness detail–600 nits typical, 2,000 nits high-brightness mode, 3,500 nits peak covering 25% of the screen and 1 nit minimum
Screen protectionCorning Gorilla Armor 2 (glass-ceramic with an anti-reflective surface treatment)POCO Shield Glass
Display featuresVision booster; Adaptive colour tone; ProScaler image upscalingDCI-P3, HDR10+, Dolby Vision, DC dimming, circular polarisation, 480 Hz touch sampling and 2,560 Hz instant touch sampling in Game Turbo, Wet Touch 2.0, Original Colour PRO, Pro HDR and TÜV low-blue-light, flicker-free and circadian-friendly certifications
Performance
ChipSnapdragon 8 Elite for GalaxyQualcomm Snapdragon 8 Elite Gen 5
Memory12 GB12 GB – 16 GB (better)
Storage256 GB, 512 GB, 1 TB (better)256 GB, 512 GB
CPUOcta-core (4.47 GHz, 3.5 GHz); 3 nm3 nm, third-generation Qualcomm Oryon CPU; two prime cores up to 4.6 GHz and six performance cores up to 3.6 GHz
GPUReal-time ray tracing; Vulkan optimisationQualcomm Adreno GPU; maker gives no numeric suffix; dedicated VisionBoost D8 with GEX assists supported games with AI super resolution, 120 fps frame interpolation and Game HDR, and selected YouTube/Netflix video scenarios
AI engine–Qualcomm AI engine
Storage type–LPDDR5X RAM at 9,600 Mbps and UFS 4.1 enhanced storage firmware; 12 GB/256 GB or 16 GB/512 GB
CoolingLarger vapour chamber with a new thermal interface material (TIM)LiquidCool Technology, 6,700 mm² 3D dual-channel, dual-layer IceLoop system with separate processor and camera cooling; WildBoost optimisation
Cameras
Main camera200 MP (better)50 MP
Ultra wide camera50 MP50 MP
Telephoto camera50 MP50 MP
Optical zoom5×5×
Front camera12 MP32 MP (better)
Main camera200 MP wide, F1.7, 85° field of view, OIS, autofocus; Adaptive Pixel sensorLight Fusion 950, 50 MP, f/1.67, 1/1.31-inch sensor, OIS, one glass plus six plastic lens elements and 4-in-1 binning to 2.4 µm pixels
Ultra wide camera50 MP, F1.9, 120° field of view; macro shots50 MP, f/2.4 and 18 mm equivalent focal length
Telephoto camera50 MP, F3.4, 22° field of view, OIS, 5x optical zoom50 MP periscope, f/3.0, OIS, four-element lens, 115 mm equivalent focal length and focusing from 30 cm to infinity
Second telephoto camera10 MP, F2.4, 36° field of view, OIS, 3x optical zoom–
Front camera12 MP, F2.2, 80° field of view, autofocus32 MP; automatic 0.8× framing for group selfies
Zoom3x and 5x optical zoom; 2x and 10x optical-quality zoom (Adaptive Pixel sensor); Space Zoom up to 100x digital5× optical, 10× lossless in-sensor crop and 20× Ultra Zoom processing
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)8K at 30 fps; 4K at 30/60 fps; Full HD at 30/60 fps; HD at 30 fps; slow motion HD at 120/240/480/960/1,920 fps or Full HD at 120/240/960 fps
Front video–4K at 30 fps, Full HD at 30/60 fps, HD at 30 fps and HD slow motion at 120 fps
Camera featuresProVisual Engine; Nightography; Audio Eraser; Expert RAW; Filters made from your own photosDynamic Shots at 1440p with EIS and HDR, motion capture and tracking focus, documents, portrait, Pro, super macro, Burst Shot Mode 2.0, adaptive telephoto, Supermoon, HDR, panorama, long exposure, video teleprompter and ShootSteady; regional AI gallery editing
Battery and charging
Battery5,000 mAh6,500 mAh (better)
Video playback (maker's claim)Up to 31 hours–
Wired chargingUp to 45 WUp to 100 W (better)
Wireless chargingUp to 15 WUp to 50 W (better)
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 cycle6,500 mAh typical silicon-carbon dual-cell battery; maker laboratory claims 15.14 hours continuous use and at least 80% capacity after 1,600 cycles
Wired chargingUp to 65% in around 30 minutes with a 45 W adapter (sold separately); compatible with QC2.0 and AFC/PD100 W HyperCharge; PD 3.0/2.0 and 100 W PPS support, with global PPS rollout stated for early December 2025; maker laboratory claim of full charge in 38 minutes; separate 120 W adaptor recommended
Wireless chargingFast Wireless Charging 2.0 (WPC Qi); Qi certified at 15 W (Extended Power Profile)50 W wireless HyperCharge; maker laboratory claim of 50% charge in 31 minutes; wireless charger sold separately
Charges other devicesWireless PowerShareUp to 22.5 W wired reverse charging for compatible devices tested by POCO
Connectivity
Satellite messagingYes–
Mobile network5G Sub6 (FDD, TDD, SDL); 4G LTE (FDD, TDD); 3G WCDMA; 2G GSM5G SA/NSA, LTE, WCDMA and GSM, 4×4 MIMO; 5G SA n1/n2/n3/n5/n7/n8/n20/n26/n28/n38/n40/n41/n48/n66/n71/n77/n78; Surge T1S and Surge T1+ signal tuners
SIMTwo nano-SIMs, nano-SIM and eSIM, or dual eSIMDual nano-SIM, nano-SIM plus eSIM or dual eSIM; eSIM depends on region and carrier
Wi-FiWi-Fi 7 (802.11a/b/g/n/ac/ax/be), 2.4, 5 and 6 GHz, EHT320, MIMO, 4096-QAMWi-Fi 7/6/5/4, 2.4/5 GHz, multi-link operation, 2×2 MIMO, 8×8 sounding for MU-MIMO, Wi-Fi Direct and Miracast; newer standards depend on region, network and applicable updates
BluetoothBluetooth 5.4Bluetooth 6.0, Dual-Bluetooth; SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC, LHDC 5.0, LC3, ASHA, Auracast and MIHC
Ultra WidebandYes–
NFCYesSupported; regional functions vary
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-C
PositioningGPS, Glonass, Beidou, Galileo, QZSSGPS L1/L5, BeiDou B1I/B1C/B2a, Galileo E1/E5a, GLONASS G1, QZSS L1/L5 and NavIC L5; assisted positioning
Design
TypeStandardStandard
Weight218 g218 g
Thickness8.2 mm7.9 mm (better)
Height × width162.8 × 77.6 mm163.33 × 77.82 mm
Water and dust resistanceIP68IP68
StylusYes–
MaterialsTitanium frame (not the volume and side keys)Aluminium-alloy frame, camera surround and lens bezel; glass-fibre and third-generation Nano-tech back materials; Denim Blue describes the finish and contains no denim fabric
ColoursTitanium Silverblue, Titanium Black, Titanium Grey, Titanium Whitesilver; Titanium Jetblack, Titanium Jadegreen and Titanium Pinkgold (Samsung.com only)Black and Denim Blue; main dimensions and weight are for Black, while Denim Blue is 8.3 mm thick and weighs 220 g
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; maker test in static freshwater at 1.5 m for 30 minutes with temperature difference no greater than 5 K; resistance can decline with wear
BiometricsFingerprint sensorUltrasonic in-display fingerprint reader with press-and-slide enrolment and AI Face Unlock
SensorsAccelerometer, barometer, fingerprint sensor, gyro sensor, geomagnetic sensor, Hall sensor, light sensor, proximity sensorProximity, ambient light, accelerometer, electronic compass, gyroscope, IR blaster, flicker and colour-temperature sensors; X-axis linear vibration motor
SpeakersStereo speakersBose-tuned 2.1-channel system with two symmetrical 1115F stereo speakers and separate 1620 subwoofer; Dolby Atmos, Hi-Res Audio and Hi-Res Wireless Audio
Microphones–Three-microphone array
Software
Operating systemAndroidAndroid
Software at launchOne UI 7 (Android 15)Xiaomi HyperOS 3; Android 16 confirmed by Tech Advisor and Expert Reviews
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 buttonRegional Xiaomi HyperAI writing, speech recognition, interpreter, search, dynamic wallpapers and image-editing tools, Google Gemini and Circle to Search; some features require internet access or software updates
Safety features–Xiaomi Offline Communication supports voice calls over 1 km in open, unobstructed environments with a SIM and signed-in Xiaomi account; availability and actual range depend on region and surroundings
In the box–Phone, USB-C cable, SIM tool, protective case, safety information, quick-start guide, warranty card and desiccant; standard UK box excludes adaptor

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