Samsung Galaxy S25 Ultra vs Xiaomi Xiaomi 15 Ultra

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

Only show differences

Better figure, where one is clearly better

Share comparison

Galaxy S25 Ultra compared with Xiaomi 15 Ultra

	SamsungGalaxy S25 Ultra	XiaomiXiaomi 15 Ultra
Overview
Released
Released	February 2025	February 2025
Display
Screen size
Screen size	6.9″	6.73″
Resolution
Resolution	3120 × 1440	3200 × 1440 (better)
Sharpness
Sharpness	498 pixels per inch	521 pixels per inch (better)
Panel
Panel	LTPO OLED	LTPO OLED
Refresh rate
Refresh rate	120 Hz	120 Hz
Peak brightness
Peak brightness	2,600 nits	3,200 nits (better)
Display type
Display type	Dynamic 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	WQHD+ LTPO AMOLED with 1–120 Hz adaptive refresh, 68 billion colours and DCI-P3; All Around Liquid Display glass curves around the edges
Pixel density
Pixel density	–	522 ppi
Brightness detail
Brightness detail	–	3,200 nits multi-scenario peak brightness
Always-on display
Always-on display	–	Always-active Display with 2–80 nits adaptive brightness and refresh as low as 1 Hz
Screen protection
Screen protection	Corning Gorilla Armor 2 (glass-ceramic with an anti-reflective surface treatment)	Xiaomi Shield Glass 2.0; camera surround protected by Corning Gorilla Glass 7i
Display features
Display features	Vision booster; Adaptive colour tone; ProScaler image upscaling	DC dimming at high brightness, 1,920 Hz PWM dimming at low brightness, 300 Hz touch sampling, Original Colour PRO, Pro HDR, wet touch, HDR10+, Dolby Vision and TÜV low-blue-light, flicker-free and circadian-friendly certifications
Performance
Chip
Chip	Snapdragon 8 Elite for Galaxy	Qualcomm Snapdragon 8 Elite
Memory
Memory	12 GB	16 GB (better)
Storage
Storage	256 GB, 512 GB, 1 TB	512 GB, 1 TB
CPU
CPU	Octa-core (4.47 GHz, 3.5 GHz); 3 nm	Second-generation TSMC 3 nm Qualcomm Oryon CPU; two prime cores up to 4.32 GHz and six performance cores up to 3.53 GHz
GPU
GPU	Real-time ray tracing; Vulkan optimisation	Qualcomm Adreno GPU; maker gives no numeric suffix
AI engine
AI engine	–	Qualcomm AI engine; maker states 80 TOPS computing power
Storage type
Storage type	–	LPDDR5X RAM at 8,533 Mbps and UFS 4.1 storage; UK 16 GB/512 GB or 16 GB/1 TB
Cooling
Cooling	Larger vapour chamber with a new thermal interface material (TIM)	Xiaomi 3D Dual-Channel IceLoop system with 5,100 mm² overall loop heat-pipe area
Cameras
Main camera
Main camera	200 MP (better)	50 MP
Ultra wide camera
Ultra wide camera	50 MP	50 MP
Telephoto camera
Telephoto camera	50 MP	200 MP
Optical zoom
Optical zoom	5× (better)	4.3×
Front camera
Front camera	12 MP	32 MP (better)
Main camera
Main camera	200 MP wide, F1.7, 85° field of view, OIS, autofocus; Adaptive Pixel sensor	Leica Summilux, Sony LYT-900, 50 MP, f/1.63 fixed aperture, 1-inch sensor, 23 mm equivalent focal length, eight-element lens, 4-axis OIS and 4-in-1 binning to 3.2 µm pixels
Ultra wide camera
Ultra wide camera	50 MP, F1.9, 120° field of view; macro shots	Leica 50 MP, f/2.2, 14 mm equivalent focal length, 115° field of view, six-element lens, 1.28 µm binned pixels and macro focusing from 5 cm
Telephoto camera
Telephoto camera	50 MP, F3.4, 22° field of view, OIS, 5x optical zoom	Leica 200 MP periscope, f/2.6, OIS, 100 mm equivalent focal length, 1/1.4-inch sensor and 2.24 µm binned pixels; second floating telephoto is 50 MP, f/1.8, OIS, 70 mm equivalent focal length, 1.4 µm binned pixels and macro focusing from 10 cm
Second telephoto camera
Second telephoto camera	10 MP, F2.4, 36° field of view, OIS, 3x optical zoom	–
Front camera
Front camera	12 MP, F2.2, 80° field of view, autofocus	OmniVision OV32B, 32 MP, f/2.0, 21 mm equivalent focal length and 90° field of view
Zoom
Zoom	3x and 5x optical zoom; 2x and 10x optical-quality zoom (Adaptive Pixel sensor); Space Zoom up to 100x digital	3× floating telephoto and 4.3× periscope optical ratios identified by Tech Advisor and TechRadar; maker lists 23/70/100 mm focal lengths and up to 120× digital zoom
Video recording
Video recording	Up 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 30/60/120 fps; Full HD at 30/60 fps; HD at 30 fps; Dolby Vision and 4K60 10-bit log across focal lengths; 4K120 on main/periscope; slow motion HD or Full HD at 120/240/480/960/1,920 fps
Front video
Front video	–	4K or Full HD at 30/60 fps, HD at 30 fps; Dolby Vision video, teleprompter, slow motion selfie and time-lapse selfie
Camera features
Camera features	ProVisual Engine; Nightography; Audio Eraser; Expert RAW; Filters made from your own photos	13-channel multispectral sensor, Leica Authentic and Vibrant styles, Leica filters, ProFocus motion and eye tracking, Lightning Burst, Dynamic Shots, master portraits from 23–135 mm, 50/200 MP modes, macro, Fastshot, Supermoon, RAW/DNG/HEIF/JPEG, 16-bit UltraRAW, Movie mode, ShootSteady, Dual Video and Ultra Night Video; Photography Kit Legend Edition sold separately
Battery and charging
Battery
Battery	5,000 mAh	5,410 mAh (better)
Video playback (maker's claim)
Video playback (maker's claim)	Up to 31 hours	–
Wired charging
Wired charging	Up to 45 W	Up to 90 W (better)
Wireless charging
Wireless charging	Up to 15 W	Up to 80 W (better)
Battery life detail
Battery life detail	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	5,410 mAh typical UK Xiaomi Surge Battery; maker laboratory claim of up to 25 hours video playback; Surge P3 charging and G2 battery-management chips
Wired charging
Wired charging	Up to 65% in around 30 minutes with a 45 W adapter (sold separately); compatible with QC2.0 and AFC/PD	90 W HyperCharge; QC3+, QC3.0, QC2.0, PD3.0, PD2.0 and MI FC 2.0; separate Xiaomi 90 W adaptor recommended
Wireless charging
Wireless charging	Fast Wireless Charging 2.0 (WPC Qi); Qi certified at 15 W (Extended Power Profile)	80 W wireless HyperCharge; compatible wireless charger sold separately
Charges other devices
Charges other devices	Wireless PowerShare	–
Connectivity
Satellite messaging
Satellite messaging	Yes	–
Mobile network
Mobile network	5G Sub6 (FDD, TDD, SDL); 4G LTE (FDD, TDD); 3G WCDMA; 2G GSM	5G SA/NSA, LTE, UMTS and GSM; 4×4 MIMO; Xiaomi Surge T1/T1S tuners and antenna array
SIM
SIM	Two nano-SIMs, nano-SIM and eSIM, or dual eSIM	Dual nano-SIM, nano-SIM plus eSIM or dual eSIM; eSIM depends on region and carrier
Wi-Fi
Wi-Fi	Wi-Fi 7 (802.11a/b/g/n/ac/ax/be), 2.4, 5 and 6 GHz, EHT320, MIMO, 4096-QAM	Wi-Fi 7/6E/6 capability depends on region and network; dual-band simultaneous operation, 2×2 MIMO, 8×8 sounding for MU-MIMO, Wi-Fi Direct and Miracast
Bluetooth
Bluetooth	Bluetooth 5.4	Bluetooth 6.0, Dual-Bluetooth; SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC, LHDC 5.0 and LC3
Ultra Wideband
Ultra Wideband	Yes	–
NFC
NFC	Yes	Supported
Satellite features
Satellite features	Works with O2 Satellite in the UK (texts, supported apps, maps and location sharing where O2 has no signal; not emergency calls)	–
USB
USB	USB Type-C, USB 3.2 Gen 1	USB-C, USB 3.2 Gen 2
Positioning
Positioning	GPS, Glonass, Beidou, Galileo, QZSS	GPS L1/L5, Galileo E1/E5a, GLONASS G1, BeiDou, QZSS L1/L5 and NavIC L5; assisted positioning
Design
Type
Type	Standard	Standard
Weight
Weight	218 g (better)	226 g
Thickness
Thickness	8.2 mm (better)	9.35 mm
Height × width
Height × width	162.8 × 77.6 mm	161.3 × 75.3 mm
Water and dust resistance
Water and dust resistance	IP68	IP68
Stylus
Stylus	Yes	–
Materials
Materials	Titanium frame (not the volume and side keys)	6M42 high-strength aluminium frame; maker confirms Silver Chrome glass fibre and PU leather; Tech Advisor identifies glass-fibre backs on Black/White
Colours
Colours	Titanium Silverblue, Titanium Black, Titanium Grey, Titanium Whitesilver; Titanium Jetblack, Titanium Jadegreen and Titanium Pinkgold (Samsung.com only)	Black, White and Silver Chrome; main dimensions and weight are for Black/White, while Silver Chrome is 9.48 mm thick and weighs 229 g
Water resistance detail
Water resistance detail	IP68, tested for submersion in up to 1.5 m of fresh water for up to 30 minutes; not advised for beach or pool use	IP68; 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; separate photography kit system rated IP54
Biometrics
Biometrics	Fingerprint sensor	Ultrasonic in-display fingerprint reader and AI Face Unlock
Sensors
Sensors	Accelerometer, barometer, fingerprint sensor, gyro sensor, geomagnetic sensor, Hall sensor, light sensor, proximity sensor	Proximity, ambient light, accelerometer, gyroscope, electronic compass, IR blaster, laser autofocus, barometer and flicker sensor; X-axis linear vibration motor
Speakers
Speakers	Stereo speakers	Stereo speakers, Dolby Atmos, Hi-Res Audio and Hi-Res Wireless Audio
Microphones
Microphones	–	Four-microphone array with directional/omnidirectional recording and Audio Zoom
Software
Operating system
Operating system	Android	Android
Software at launch
Software at launch	One UI 7 (Android 15)	Xiaomi HyperOS 2; Android 15 confirmed by Tech Advisor and TechRadar
Software updates
Software updates	Seven generations of OS upgrades and seven years of security updates; security updates until 31 January 2032 (UK)	Four Android version upgrades and six years of security updates reported at launch by Tech Advisor and TechRadar
AI features
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	Regional HyperAI writing, speech recognition, interpreter, search, dynamic wallpapers, creativity and image-editing tools, Google Gemini and Circle to Search; applicable features require internet access and updates
In the box
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