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Xiaomi Mi 11 vs Xiaomi Xiaomi 15 Ultra

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

Better figure, where one is clearly better

XiaomiMi 11XiaomiXiaomi 15 Ultra
Overview
ReleasedJanuary 2021February 2025
Display
Screen size6.81″6.73″
Resolution3200 × 14403200 × 1440
Sharpness515 pixels per inch521 pixels per inch
PanelOLEDLTPO OLED
Refresh rate120 Hz120 Hz
Peak brightness1,500 nits3,200 nits
Display typeQuad-curved AMOLED with Gorilla Glass Victus.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–522 ppi
Brightness detail–3,200 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 featuresAdaptiveSync at 30/60/90/120 Hz, 480 Hz touch sampling and 900 nits high-brightness mode; HDR10+ and 10-bit colour.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
ChipQualcomm Snapdragon 888Qualcomm Snapdragon 8 Elite
Memory8 GB16 GB
Storage128 GB, 256 GB512 GB, 1 TB
CPU5 nm Snapdragon 888 with Kryo 680 CPU; no unpublished CPU clock inferred.Second-generation TSMC 3 nm Qualcomm Oryon CPU; two prime cores up to 4.32 GHz and six performance cores up to 3.53 GHz
GPUAdreno 660.Qualcomm Adreno GPU; maker gives no numeric suffix
AI engine–Qualcomm AI engine; maker states 80 TOPS computing power
Storage typeLPDDR5 RAM and UFS 3.1 storage; no microSD expansion (Tech Advisor).LPDDR5X 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 camera108 MP50 MP
Ultra wide camera13 MP50 MP
Telephoto cameraNone200 MP
Optical zoomNone4.3×
Front camera20 MP32 MP
Main cameraf/1.85, 1/1.33-inch sensor, optical stabilisation and four-pixel binning to 1.6 µm.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 cameraf/2.4 and 123° field of view.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–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
Front camera–OmniVision OV32B, 32 MP, f/2.0, 21 mm equivalent focal length and 90° field of view
Zoom–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 recordingRear 8K at 24/30 fps, 4K at 30/60 fps and 1080p at 30/60 fps.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 videof/2.2 selfie camera; 1080p at 30 fps. Maker recording mode controls Tech Advisor's front HD60 claim.4K or Full HD at 30/60 fps, HD at 30 fps; Dolby Vision video, teleprompter, slow motion selfie and time-lapse selfie
Camera featuresAdditional 5 MP f/2.4 autofocus telemacro camera, focusing at 3–10 cm; a close-up camera rather than optical distance zoom. Night and movie-effect modes.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
Battery4,600 mAh5,410 mAh
Wired chargingUp to 55 WUp to 90 W
Wireless chargingUp to 50 WUp to 80 W
Battery life detail–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 charging55 W GaN charger included in the UK; maker laboratory claim of 45 minutes to full charge, with actual results varying.90 W HyperCharge; QC3+, QC3.0, QC2.0, PD3.0, PD2.0 and MI FC 2.0; separate Xiaomi 90 W adaptor recommended
Wireless charging50 W wireless and 10 W reverse wireless charging. Maker rates control Tech Advisor's swapped closing specification table.80 W wireless HyperCharge; compatible wireless charger sold separately
Design
TypeStandardStandard
Weight196 g226 g
Thickness8.06 mm9.35 mm
Height × width164.3 × 74.6 mm161.3 × 75.3 mm
Water and dust resistance–IP68
MaterialsCurved glass back and Gorilla Glass Victus over the display.6M42 high-strength aluminium frame; maker confirms Silver Chrome glass fibre and PU leather; Tech Advisor identifies glass-fibre backs on Black/White
ColoursHorizon Blue and Midnight Gray; maker pages also depict White and a textured-glass Lei Jun limited edition, without establishing UK availability of those editions.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–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
BiometricsIn-display fingerprint sensor and AI face unlock; heart-rate monitoring was subject to an OTA update.Ultrasonic in-display fingerprint reader and AI Face Unlock
Sensors–Proximity, ambient light, accelerometer, gyroscope, electronic compass, IR blaster, laser autofocus, barometer and flicker sensor; X-axis linear vibration motor
SpeakersDual speakers tuned with Harman Kardon.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 launchMIUI 12 based on Android 11.Xiaomi 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 boxUK charger, USB-C cable, USB-C to 3.5 mm adapter, case, SIM tool and documents. Maker first-sale programme and contemporary Gizmochina coverage establish 1 January 2021 in China; the UK configurations above became available later.Phone, USB-C cable, SIM tool, protective case, safety information, quick-start guide, warranty card and desiccant; standard UK box excludes adaptor
Connectivity
Mobile network–5G SA/NSA, LTE, UMTS and GSM; 4×4 MIMO; Xiaomi Surge T1/T1S tuners and antenna array
SIMDual SIM, with regional 5G band availability.Dual nano-SIM, nano-SIM plus eSIM or dual eSIM; eSIM depends on region and carrier
Wi-FiWi-Fi 6, as confirmed by both UK maker pages; Tech Advisor instead lists Wi-Fi 6E.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
BluetoothBluetooth 5.2.Bluetooth 6.0, Dual-Bluetooth; SBC, AAC, aptX, aptX HD, aptX Adaptive, LDAC, LHDC 5.0 and LC3
NFCGoogle Pay support is market-dependent, as stated by the UK maker sheet.Supported
USBUSB-C; no 3.5 mm socket (TechRadar).USB-C, USB 3.2 Gen 2
Positioning–GPS L1/L5, Galileo E1/E5a, GLONASS G1, BeiDou, QZSS L1/L5 and NavIC L5; assisted positioning

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