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vivo X300 Ultra vs Xiaomi Xiaomi 18 Pro Max

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

Better figure, where one is clearly better

vivoX300 UltraXiaomiXiaomi 18 Pro Max
Overview
ReleasedApril 2026September 2026
Display
Screen size6.82″6.9″
Resolution3168 × 14402624 × 1208
Sharpness510 pixels per inch419 pixels per inch
PanelLTPO OLEDOLED
Refresh rate144 Hz120 Hz
Peak brightness4,500 nits4,000 nits
Display typeAMOLED, LTPO identified by Digital Camera World; adaptive 1–144 Hz, with 144 Hz limited to supported games as noted by StuffAMOLED; rear 2.9-inch AMOLED display, 976 × 596, up to 120 Hz
Pixel density510 ppi–
Brightness detail4,500 nits local peakMulti-scenario peak 4,000 nits on both screens; minimum 1 nit
Always-on display–Full-screen always-on display
Screen protection–Xiaomi Dragon Crystal Glass 3.0
Display featuresQ10 plus light-emitting material; 1.07 billion colours, P3 gamut and 105% NTSC; circular polariser 2.0; TÜV Rheinland flicker-free and low blue light certificationHardware privacy display; BT.2020 colour gamut; full-brightness single-pulse DC dimming; main touch sampling up to 300 Hz and rear up to 120 Hz; HDR10+, HDR Vivid and Dolby Vision; wet-hand touch
Performance
ChipQualcomm Snapdragon 8 Elite Gen 5Snapdragon 8 Elite Extreme Gen 6
Memory16 GB12 GB – 16 GB
Storage512 GB, 1 TB256 GB, 512 GB, 1 TB
CPUEight cores, 2 × 4.6 GHz + 6 × 3.62 GHz; 3 nm processFourth-generation Qualcomm Oryon CPU up to 5 GHz; TSMC 2 nm process; English Snapdragon 8 Elite Extreme Gen 6 name corroborated by TechRadar for this exact model
GPU–Adreno GPU; model number not published
AI engine–Qualcomm AI Engine
Storage typeGlobal 16 GB/512 GB and 16 GB/1 TB, LPDDR5X Ultra Pro RAM and UFS 4.1; up to 16 GB virtual RAM is separate from physical RAM; no storage expansionLPDDR5X RAM; UFS 4.1 storage; China factory configuration pairs corroborated by Sina
Cooling5,800 mm² vapour chamber–
Cameras
Main camera200 MP200 MP
Ultra wide camera50 MP50 MP
Telephoto camera200 MP200 MP
Optical zoom3.7×3.2×
Front camera50 MP50 MP
Main camera200 MP Sony LYTIA 901, 1/1.12-inch sensor, f/1.85, 35 mm equivalent, ZEISS T* coating and CIPA 6.5 OIS200 MP Light Hunter 960L, 1/1.28-inch sensor, ƒ/1.67, 23 mm equivalent, OIS and QPD autofocus; 16-in-1 2.44 µm pixels; 1G+6P lens
Ultra wide camera50 MP Sony LYTIA 818, 1/1.28-inch sensor, f/2.0, 14 mm equivalent, ZEISS T* coating and CIPA 6.0 OIS50 MP, ƒ/2.4, 17 mm equivalent, 102° field of view, autofocus; 5 cm macro
Telephoto camera200 MP HP0, 1/1.4-inch sensor, f/2.67, 85 mm equivalent, ZEISS T* coating, CIPA 7.0 and 3° OIS; autofocus tracking up to 60 fps200 MP, 1/1.56-inch sensor, ƒ/2.4, OIS; 12 cm telephoto macro
Front camera50 MP, f/2.45; autofocus identified by Digital Camera World50 MP
Zoom3.7× telephoto identified by Stuff; maker lists 35 mm main, 14 mm ultra wide and 85 mm telephoto focal lengths; separately purchased extenders provide 200 mm and 400 mm equivalent reach–
Video recordingAcross all three rear imaging cameras, 4K120 10-bit Log, Dolby Vision and slow motion; 4K Master Color; 4:2:2 APV codec, ACES integration and 3D LUT monitoring8K at 30 fps; 4K at 30, 60 or 120 fps; 1080p at 30 or 60 fps; 720p at 30 fps; slow motion 720p at 120, 240, 480, 960 or 1,920 fps and 1080p at 120, 240 or 960 fps
Front video–4K and 1080p at 30 or 60 fps; 720p at 30 fps
Camera featuresAdditional 5 MP f/2.0 colour-sensing camera; VS1+ imaging chip; Pro Photo, Pro Video, underwater, spatial, stage, food, street photography and creative modesLeica Authentic and Vibrant looks; rear-screen selfies and preview; dynamic photos, subject and audio tracking, portrait, night, Pro, time-lapse, panorama and document modes
Battery and charging
Battery6,600 mAh8,500 mAh
Wired chargingUp to 100 WUp to 100 W
Wireless chargingUp to 40 WUp to 50 W
Battery life detailSingle-cell battery, 6,600 mAh/24.69 Wh typical and 6,395 mAh/23.92 Wh rated at 3.74 V8,500 mAh typical; 8,350 mAh minimum; built-in non-removable battery
Wired chargingUp to 100 W FlashCharge with maker charger; charging power varies during useQC3+, QC3.0, QC2.0, PD3.0, PD2.0 and 100 W PPS supported
Wireless chargingUp to 40 W with included charger/cable and separately purchased vivo or iQOO 50 W Vertical Wireless Charger 2; incompatible with their original 50 W Vertical Wireless Charger50 W Xiaomi wireless charging
Charges other devices–27 W wired reverse charging; wireless reverse charging supported
Design
TypeStandardStandard
Weight237 g235 g
Thickness8.49 mm8.39 mm
Height × width162.98 × 76.81 mm163.39 × 77.6 mm
Water and dust resistanceIP68–
MaterialsGreen and White glass rear, 237 g and 8.49 mm thick; Black glass fibre rear, 232 g and 8.19 mm thick; height and width unchangedFibreglass Black, White and pink versions are 235 g and 8.39 mm thick; glass blue and transparent versions are 240 g and 8.47 mm thick
ColoursGreen, Black and White; overview names Steppe Green, Volcano Black and Alpine WhiteBlack, White, pink, blue and transparent editions; China-market names
Water resistance detailIP68 and IP69 under IEC 60529; resistance can diminish with use–
Biometrics3D ultrasonic fingerprint sensor3D ultrasonic fingerprint sensor
SensorsAccelerometer, ambient light, compass, proximity, colour temperature, gyroscope, laser focusing, Hall, infrared blaster and flicker sensors; linear vibration motorProximity, under-screen and rear ambient light/colour temperature, accelerometer, gyroscope, compass, X-axis linear motor, IR blaster, flicker, laser autofocus, barometer and Hall sensors
SpeakersDual stereo speakersStereo three-speaker system; Dolby Atmos, spatial audio and Hi-Res wired/wireless audio; USB-C digital headphones
MicrophonesQuad-microphone recording with six presets; Bluetooth TWS earbud and wireless microphone recording support–
Software
Operating systemAndroidAndroid
Software at launchAndroid 16 with OriginOS 6Xiaomi HyperOS 4; China variant
In the boxPhone, USB cable, charger, SIM eject tool, case, applied protective film and warranty card, as listed on global sheetPhone, power adapter, USB-C cable, case, pre-applied screen protector, SIM tool and documentation; contents can vary with sales bundle
Connectivity
Mobile networkGSM 850/900/1800/1900 MHz; WCDMA B1/2/4/5/6/8/19; LTE FDD B1/2/3/4/5/7/8/12/13/17/18/19/20/25/26/28/32 RX/66/71; 5G n1/2/3/5/7/8/12/20/25/28/38/40/41/66/71/75/77/78/79; maker's duplicated LTE TDD band list is omitted pending correction5G n1/2/3/5/7/8/12/13/14/18/20/25/26/28/29/38/40/41/48/66/70/71/77/78/79/80/81/83/84/89; LTE FDD B1/2/3/4/5/7/8/12/13/14/17/18/19/20/25/26/28/29/66/71 and TDD B34/38/39/40/41/42/43/48; 4×4 MIMO; China carrier and software restrictions apply
SIMTwo nano-SIMs, nano-SIM plus eSIM or two eSIMs; dual 5G standby; eSIM availability depends on region and carrierDual nano-SIM; dual-active operation depends on SA bands and carrier support
Wi-FiWi-Fi 6 and 7; Wi-Fi Display, 2 × 2 MIMO and MU-MIMO; concurrent 2.4/5 GHz or 2.4/6 GHzWi-Fi 7, enhanced Wi-Fi 6, Wi-Fi 5, Wi-Fi 4 and 802.11a/b/g; 2.4 GHz 2×2 MIMO and 5 GHz 4×4 MIMO; MLO, 8×8 sounding, Wi-Fi Direct and Miracast
BluetoothBluetooth 6.0Bluetooth 6.0; dual Bluetooth; SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC, LHDC 5.0, LC3 and MIHC
NFCReader/writer and card emulation including HCE and NFC-SIM payment; NFC-SIM payment requires SIM1Chinese Wallet transport, payment, access-card and car-key services; availability varies by location and provider
USBUSB 3.2 up to 10 Gbps; OTGUSB-C, USB 3.2 Gen 1; separate USB 3 cable required because the supplied cable does not support USB 3 transfers
PositioningGPS, BeiDou, GLONASS, Galileo, QZSS, NavIC, A-GPS, cellular and Wi-Fi positioningGPS L1/L5, BeiDou B1I/B1C/B2a, Galileo E1/E5a, GLONASS G1, QZSS L1/L5, NavIC L5; A-GNSS and assisted network positioning

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