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OnePlus OnePlus 15 vs Xiaomi Xiaomi 18 Pro Max

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

Better figure, where one is clearly better

OnePlusOnePlus 15XiaomiXiaomi 18 Pro Max
Overview
ReleasedNovember 2025September 2026
Display
Screen size6.78″6.9″
Resolution2772 × 12722624 × 1208
Sharpness450 pixels per inch419 pixels per inch
PanelLTPO OLEDOLED
Refresh rate165 Hz120 Hz
Peak brightness1,800 nits4,000 nits
Display type6.78-inch LTPO 1.5K display (FHD+), 20:9 aspect ratioAMOLED; rear 2.9-inch AMOLED display, 976 × 596, up to 120 Hz
Pixel density450 ppi–
Brightness detail1,800 nits HBM; minimum 1 nit (0.5 nit with Reduce White Point)Multi-scenario peak 4,000 nits on both screens; minimum 1 nit
Always-on display–Full-screen always-on display
Screen protectionCorning Gorilla Glass Victus 2Xiaomi Dragon Crystal Glass 3.0
Display features1–120 Hz adaptive refresh, up to 165 Hz in games; 100% DCI-P3; 10-bit (1.07 billion colours); HDR10+ and HDR Vivid; dedicated touch response chip with 3,200 Hz instant touch sampling; TÜV Rheinland Intelligent Eye Care 5.0; 1.15 mm bezels on every sideHardware 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
ChipSnapdragon 8 Elite Gen 5Snapdragon 8 Elite Extreme Gen 6
Memory12 GB – 16 GB12 GB – 16 GB
Storage256 GB, 512 GB256 GB, 512 GB, 1 TB
CPUQualcomm Oryon CPU, up to 4.608 GHzFourth-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
GPUAdreno 840 at 1,200 MHzAdreno GPU; model number not published
AI engine–Qualcomm AI Engine
Storage typeUFS 4.1; LPDDR5X Ultra RAM (12 GB model) or LPDDR5X Ultra+ (16 GB model)LPDDR5X RAM; UFS 4.1 storage; China factory configuration pairs corroborated by Sina
Cooling360° Cryo-Velocity Cooling System with a 3D steel vapour chamber (5,731 mm²), aerogel insulation under the screen and a white-graphite back cover layer–
Cameras
Main camera50 MP200 MP
Ultra wide camera50 MP50 MP
Telephoto camera50 MP200 MP
Optical zoom3.5×3.2×
Front camera32 MP50 MP
Main camera50 MP Sony IMX906, ƒ/1.8, 84° field of view, 6P lens, OIS, autofocus200 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 OV50D, ƒ/2.0, 116° field of view, 6P lens, autofocus50 MP, ƒ/2.4, 17 mm equivalent, 102° field of view, autofocus; 5 cm macro
Telephoto camera50 MP S5KJN5 periscope, 3.5× optical zoom, ƒ/2.8, 30° field of view, 4P lens, OIS, autofocus200 MP, 1/1.56-inch sensor, ƒ/2.4, OIS; 12 cm telephoto macro
Front camera32 MP Sony IMX709 with RGBW sensor, ƒ/2.4, 21 mm equivalent, 5P lens, autofocus50 MP
Zoom3.5× optical; 7× optical quality; Ultra Res digital zoom up to 120×–
Video recording8K at 30 fps; 4K at 30, 60 or 120 fps, including 4K 120 fps Dolby Vision; 1080p at 30, 60 or 120 fps; slow motion at 4K 120 fps, 1080p 240 fps and 720p 480 fps; O-Log; HDR and multi-view video8K 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 video4K at 30 or 60 fps; 1080p at 30 or 60 fps; EIS4K and 1080p at 30 or 60 fps; 720p at 30 fps
Camera featuresDetailMax Engine; omni-directional PDAF, CDAF and laser autofocus; spectral sensor; LED flash; Master, Tilt-shift, Underwater, Long Exposure and Pro Video 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
Battery7,300 mAh8,500 mAh
Video playback (maker's claim)Up to 31 hours–
Wired chargingUp to 120 WUp to 100 W
Wireless chargingUp to 50 WUp to 50 W
Battery life detailDual-cell (2 × 3,650 mAh) Silicon NanoStack battery, rated 7,150 mAh (27.03 Wh); up to 31 hours of video playback; rated for at least 1,100 charge cycles8,500 mAh typical; 8,350 mAh minimum; built-in non-removable battery
Wired charging120 W SUPERVOOC, 1–100% in about 39 minutes with OnePlus's 120 W charger (sold separately)QC3+, QC3.0, QC2.0, PD3.0, PD2.0 and 100 W PPS supported
Wireless charging50 W AIRVOOC with the OnePlus AIRVOOC 50W Magnetic Charger (sold separately)50 W Xiaomi wireless charging
Charges other devices–27 W wired reverse charging; wireless reverse charging supported
Connectivity
Satellite messagingNo–
Mobile network5G (sub-6 GHz); 4G LTE with 4×4 MIMO, up to Cat 20 download5G 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
SIMDual nano-SIM; eSIM supported (dual eSIM via a software update)Dual nano-SIM; dual-active operation depends on SA bands and carrier support
Wi-FiWi-Fi 7 (802.11be), 2.4, 5 and 6 GHz (320 MHz), 2×2 MIMOWi-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 6.0; SBC, AAC, LDAC, aptX, aptX HD, aptX Adaptive and LHDC 5.0Bluetooth 6.0; dual Bluetooth; SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC, LHDC 5.0, LC3 and MIHC
NFCYesChinese Wallet transport, payment, access-card and car-key services; availability varies by location and provider
USBUSB-C, USB 3.2 Gen 1; supports USB-C earphonesUSB-C, USB 3.2 Gen 1; separate USB 3 cable required because the supplied cable does not support USB 3 transfers
PositioningDual-band GPS (L1+L5), GLONASS (G1), BeiDou (B1I+B1C+B2a), Galileo (E1+E5a), QZSS (L1+L5)GPS L1/L5, BeiDou B1I/B1C/B2a, Galileo E1/E5a, GLONASS G1, QZSS L1/L5, NavIC L5; A-GNSS and assisted network positioning
Design
TypeStandardStandard
Weight211 g235 g
Thickness8.1 mm8.39 mm
Height × width161.4 × 76.7 mm163.39 × 77.6 mm
Water and dust resistanceIP68–
StylusNo–
MaterialsGorilla Glass Victus 2 front; Sand Storm has a Micro-Arc Oxidation (MAO) mid-frame and camera surround; Infinite Black and Ultra Violet weigh 215 g and are 8.2 mm thick (Sand Storm 211 g, 8.1 mm)Fibreglass 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
ColoursInfinite Black, Ultra Violet, Sand StormBlack, White, pink, blue and transparent editions; China-market names
ButtonsPlus Key (press to save to Mind Space, long press to record a voice memo of up to 60 seconds)–
BiometricsIn-display ultrasonic fingerprint sensor3D ultrasonic fingerprint sensor
SensorsProximity, ambient light, colour temperature, e-compass, accelerometer, gyroscope (up to ±4,000 dps), Hall, laser focus, spectral, barometer, infrared remote control; X-axis 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
SpeakersOReality AudioStereo three-speaker system; Dolby Atmos, spatial audio and Hi-Res wired/wireless audio; USB-C digital headphones
MicrophonesThree microphones with noise cancellation–
Software
Operating systemAndroidAndroid
Software at launchOxygenOS 16.0 based on Android 16Xiaomi HyperOS 4; China variant
AI featuresPlus Mind and Mind Space; Google Gemini; AI Scan, AI Portrait Glow and AI Perfect Shot–
In the boxOnePlus 15, USB data cable, SIM ejector tool, quick guide, safety guide (no charger)Phone, power adapter, USB-C cable, case, pre-applied screen protector, SIM tool and documentation; contents can vary with sales bundle

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