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vivo X300 Pro vs Xiaomi Xiaomi 15 Ultra

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

Better figure, where one is clearly better

vivoX300 ProXiaomiXiaomi 15 Ultra
Overview
ReleasedOctober 2025February 2025
Display
Screen size6.78″6.73″
Resolution2800 × 12603200 × 1440
Sharpness453 pixels per inch521 pixels per inch
PanelLTPO OLEDLTPO OLED
Refresh rate120 Hz120 Hz
Peak brightness4,500 nits3,200 nits
Display typeLTPO AMOLED, adaptive 1–120 Hz, Q10 plus light-emitting materialWQHD+ LTPO AMOLED with 1–120 Hz adaptive refresh, 68 billion colours and DCI-P3; All Around Liquid Display glass curves around the edges
Pixel density452 ppi522 ppi
Brightness detail4,500 nits local peak3,200 nits multi-scenario peak brightness
Always-on display–Always-active Display with 2–80 nits adaptive brightness and refresh as low as 1 Hz
Screen protection–Xiaomi Shield Glass 2.0; camera surround protected by Corning Gorilla Glass 7i
Display featuresP3 wide colour gamut; capacitive multi-touchDC 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
ChipMediaTek Dimensity 9500Qualcomm Snapdragon 8 Elite
Memory16 GB16 GB
Storage512 GB512 GB, 1 TB
CPUEight cores, 1 × 4.21 GHz + 3 × 3.5 GHz + 4 × 2.7 GHz; 3 nm processSecond-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–Qualcomm Adreno GPU; maker gives no numeric suffix
AI engine–Qualcomm AI engine; maker states 80 TOPS computing power
Storage typeGlobal 16 GB/512 GB configuration, LPDDR5X Ultra RAM and UFS 4.1; up to 16 GB virtual RAM is additional to physical memory; no storage expansionLPDDR5X RAM at 8,533 Mbps and UFS 4.1 storage; UK 16 GB/512 GB or 16 GB/1 TB
Cooling–Xiaomi 3D Dual-Channel IceLoop system with 5,100 mm² overall loop heat-pipe area
Cameras
Main camera50 MP50 MP
Ultra wide camera50 MP50 MP
Telephoto camera200 MP200 MP
Optical zoom3.7×4.3×
Front camera50 MP32 MP
Main camera50 MP Sony LYT-828, 1/1.28-inch sensor, f/1.57 and OISLeica 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 camera50 MP Samsung JN1, 1/2.76-inch sensor, f/2.0 and autofocusLeica 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 camera200 MP HPB, 1/1.4-inch sensor, f/2.67, 85 mm equivalent, autofocus and OISLeica 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
Front camera50 MP JN1, f/2.0, autofocus and 92° field of viewOmniVision OV32B, 32 MP, f/2.0, 21 mm equivalent focal length and 90° field of view
Zoom3.7× optical telephoto identified by Android Central; maker specifies 85 mm equivalent telephoto3× 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 recording4K120 Dolby Vision and 10-bit Log; 4K dual-view stage recording8K 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–4K or Full HD at 30/60 fps, HD at 30 fps; Dolby Vision video, teleprompter, slow motion selfie and time-lapse selfie
Camera featuresVS1 and V3+ imaging chips; portrait, snapshot, landscape and night, panorama, document, slow motion, stage, time-lapse, Pro, food, street photography and telephoto extender modes13-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
Battery5,440 mAh5,410 mAh
Wired chargingUp to 90 WUp to 90 W
Wireless chargingUp to 40 WUp to 80 W
Battery life detailEuropean single-cell battery, 5,440 mAh/19.75 Wh typical and 5,325 mAh/19.33 Wh rated at 3.63 V; overseas markets outside Europe use 6,510 mAh/24.55 Wh typical and 6,375 mAh/24.04 Wh rated at 3.77 V5,410 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 charging90 W FlashCharge; maker adapter 11 V/8.2 A, compatible with 9 V/1.3 A or 5–11 V/5 A maximum; European box has no charger90 W HyperCharge; QC3+, QC3.0, QC2.0, PD3.0, PD2.0 and MI FC 2.0; separate Xiaomi 90 W adaptor recommended
Wireless chargingUp to 40 W with separately purchased vivo Vertical Wireless Charger 280 W wireless HyperCharge; compatible wireless charger sold separately
Design
TypeStandardStandard
Weight226 g226 g
Thickness7.99 mm9.35 mm
Height × width161.98 × 75.48 mm161.3 × 75.3 mm
Water and dust resistanceIP68IP68
MaterialsGlass rear6M42 high-strength aluminium frame; maker confirms Silver Chrome glass fibre and PU leather; Tech Advisor identifies glass-fibre backs on Black/White
ColoursBlack, White, Blue and BrownBlack, 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 detailIP68 and IP69 under IEC 60529; resistance can diminish with 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; separate photography kit system rated IP54
Biometrics3D ultrasonic fingerprint sensorUltrasonic in-display fingerprint reader and AI Face Unlock
SensorsAccelerometer, ambient light, compass, proximity, front and rear colour temperature, gyroscope, laser focusing, Hall, infrared blaster, flicker and multispectral sensors; linear vibration motorProximity, ambient light, accelerometer, gyroscope, electronic compass, IR blaster, laser autofocus, barometer and flicker sensor; X-axis linear vibration motor
Speakers–Stereo speakers, Dolby Atmos, Hi-Res Audio and Hi-Res Wireless Audio
Microphones–Four-microphone array with directional/omnidirectional recording and Audio Zoom
Software
Operating systemAndroidAndroid
Software at launchAndroid 16 with OriginOS 6Xiaomi HyperOS 2; Android 15 confirmed by Tech Advisor and TechRadar
Software updates–Four Android version upgrades and six years of security updates reported at launch by Tech Advisor and TechRadar
AI features–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 boxPhone, quick start guide, USB cable, SIM eject tool, case, applied protective film and warranty card; European package excludes charger, other overseas packages include itPhone, USB-C cable, SIM tool, protective case, safety information, quick-start guide, warranty card and desiccant; standard UK box excludes adaptor
Connectivity
Mobile networkGSM 850/900/1800/1900 MHz; WCDMA B1/2/4/5/8; LTE FDD B1/2/3/4/5/7/8/12/13/17/18/19/20/25/26/28/32/66/71, TDD B34/38/39/40/41/42; 5G n1/2/3/5/7/8/20/25/26/28/38/40/41/66/71/75/77/78/795G SA/NSA, LTE, UMTS and GSM; 4×4 MIMO; Xiaomi Surge T1/T1S tuners and antenna array
SIMTwo nano-SIMs, nano-SIM plus eSIM or two eSIMs; dual 5G standby outside India, dual active in India with supported network combinations; eSIM availability depends on region and carrierDual nano-SIM, nano-SIM plus eSIM or dual eSIM; eSIM depends on region and carrier
Wi-FiWi-Fi 6 and 7; 2 × 2 MIMO, MU-MIMO, Wi-Fi Display; concurrent 2.4/5 GHz or 2.4/6 GHzWi-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
BluetoothBluetooth 6.0; Android Central's 5.4 table conflicts with the current maker sheetBluetooth 6.0, Dual-Bluetooth; SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC, LHDC 5.0 and LC3
NFCReader/writer and card emulation, including HCE and NFC-SIM payment; NFC-SIM payment requires SIM1Supported
USBUSB 3.2 Gen 1 and OTGUSB-C, USB 3.2 Gen 2
PositioningGPS, BeiDou, GLONASS, Galileo, QZSS, NavIC, A-GPS, cellular and Wi-Fi positioningGPS L1/L5, Galileo E1/E5a, GLONASS G1, BeiDou, QZSS L1/L5 and NavIC L5; assisted positioning

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