產品詳情
高通驍龍855八核Kryo 855高達2.84GHz處理器，1 x 2.84GHz + 3 x 2.42GHz + 4 x 1.80GHz，第4代AI引擎，3倍AI性能。

搭載6GB + 64GB內存，運行快，運行流暢。

MIUI 10操作系統，首先支持MI Turbo和遊戲Turbo，高速玩遊戲。

6.39英寸AMOLED全屏，2340 x 1080像素FHD +，403 PPI，標準模式，防晒屏2.0，夜間屏幕，無級色溫調節，256級護眼模式，HDR显示。

3個後置攝像頭：48MP主攝像頭，12MP人像鏡頭攝像頭，16MP超廣角+微距鏡頭攝像頭，4800萬超清, 智能超廣角模式, 手持超級夜景模式, 人像模式背景虛化, 全景模式, 專業模式 , 倒計時拍照, 水平儀 , 連拍模式, 面部識別, HDR, 動態照片, 千人千面的 AI 美顏（增加寶寶美顏), AI智能瘦身, 超廣角邊緣畸變校正, 合影人臉修正, 自定義水印, 人像全身模式, 人像虛化調節, 後置 AI 場景相機（30種標籤）, AI動態光斑, AI影棚光效, AI 超分辨率拍照 , 月亮模式。

採用3300mAh高容量電池供電，待機和使用時間長。

手機配置
制式 – 4G / 3G / 2G
處理器 – 8核 Snapdragon™ 855 up to 2.84GHz
系統 – Android 9.0
電池 – 3300mAh
屏幕 – 6.39英寸，解析度 2340 x 1080 FHD+ 403 PPI
後置攝像頭 – 4800萬 + 1200萬 + 1600萬
前置攝像頭 – 2000萬美顏相機
記憶體 – 6GB
容量 – 64GB（不支持Micro SD卡）
連接 – NFC, 802.11 a/b/g/n/ac，支援 WiFi 2×2 MIMO技術，支援 MU-MIMO，WiFi Direct，WiFi Display，支援WPA3, 支持Bluetooth 5.0無線技術
功能 – 雙卡，螢幕指紋辨識，面部解鎖，採用防油漬防指紋塗層，康寧® ️第六代大猩猩® ️玻璃，支持27W快充

保養
一年有限度保養（購買日期起計）

Xiaomi 9 Specifications

Processor
Qualcomm® Snapdragon™ 855 flagship processor
CPU name: Snapdragon™ 855, Qualcomm’s flagship processor of the year
CPU architecture: All new Kyro 485 architecture with 7nm process
CPU frequency: Octa-core processor, up to 2.84 GHz
Qualcomm’s first trifecta design: 1 x 2.84GHz super large core + 3 x 2.42GHz large core + 4 x 1.80GHz small core
Improved CPU performance: 45% improvement
Improved efficacy: 40%
GPU name: Adreno™ 640
Improved GPU performance: 20%
Improved efficacy: 25%+
The first smartphone GPU to support Vulkan 1.1 graphical driver and movie-level post processing
Increased bandwidth compression, shadow processing and true HDR rendering and display
AIE edition performance: 7th generation AIE processor with 3 times more powerful AI

Operating system
MIUI 10
Supports MI Turbo
Our first phone to support defragmentation I/O optimization | Supports app launch speed optimization
Reduced slowness by 35% after 18 months of simulated use

Supports GAME Turbo
Support custom game parameters | Supports custom game display improvement | 4D Touch for shooter games
Supports CPU/GPU occupation and FPS display | Game tools support one-touch switch network card
Supports improved game performance and optimized touch response | Supports custom border restrictions | Supports auto-brightness disabling, three-finger screenshot and Eye-protection mode

Dynamic wallpaper and display
All new multi-color Always-On Display* | Supports dynamic wallpaper auto-change according to local time
Now supporting Dark mode

Memory
6GB+64GB
RAM: 6GB LPDDR4x 2133MHz dual-channel
ROM: 64GBUFS2.1 flash storage

Display
6.39″ Samsung AMOLED Full Screen Display*
Resolution: 2340 x 1080 FHD+ 403 PPI
Brightness: 600nit (HBM) / 430nit (typ)
High contrast: 60000:1 (min) | Color Gamut: NTSC 103.8% (typ)
Standard mode | Sunshine mode 2.0 | Night mode | Color temperature adjustment | 256 ranks adjustable Reading mode
Corning® Gorilla® Glass 6
Anti-oil and anti-fingerprint protective coating
Supports HDR display

*Xiaomi phones feature a curved design with gracefully rounded corners. When measuring the rectangle formed from the farthest ends of each corner, the screen has a diagonal length of 6.39 inches (actual display area may be slightly smaller). The term “Full Screen Display” indicates that the phone has a high screen to body ratio in comparison to traditional Xiaomi phones. The screen-to-body ratio of 90.7% was obtained by Xiaomi laboratory data. Methods of measurement may vary within the industry and results may vary.

Rear Camera
Sony 48MP ultra wide-angle AI triple camera
Top level DxO photo score
48MP primary camera with Sony IMX586 0.8μm ƒ/1.75 aperture
Supports HD video
12MP telephoto camera with 1.0μm ƒ/2.2 aperture
Supports macro photography
16MP Ultra wide-angle lens with 1.0μm ƒ/2.2 aperture
Supports wide-angle photography
Zoom: Triple camera zoom with 2x optical zoom and 10x digital zoom
Focus: laser focus | Phase detection focus | Contrast detection focus
Photo resolution: up to 8000×6000 pixels*
Video resolution: up to 3840×2160 pixels*

Rear camera photography features
48MP HD | Smart ultra-wide angle mode | Ultra nightscape mode | Portrait mode background blurring | Panorama mode | Pro mode | Photo timer | Level display | Burst mode | Face recognition | HDR | Single-tone dual flash | Dynamic photos | AI Beautify | Ultra wide-angle edge distortion correction | Group photo face correction | Custom watermark | Full body portrait mode | Portrait mode background blur adjustment | Rear camera AI scene detection (30 recognizable tags) | AI lens flare | AI Studio lighting | AI high resolution photos | Moon mode*

Rear camera video features
960 fps slow motion video | 960 fps Smart audio pairing | Short videos (speed adjustment, beauty filters and popular music) | Rear camera video Beautify | Video stabilizing | Quick motion | Motion tracking*

4K recording 60fps / 30fps
1080p recording 60fps / 30fps
720p recording 30fps
1080p slow motion recording 120fps / 240fps / 960fps
720p slow motion recording 120fps / 240fps / 960fps
*”Third best DxO photo score in the world” refers to DxOMark smartphone photo scores. For more information, see: https://www.dxomark.com; Phones sold in initial batches may not include motion tracking, or Moonlight mode, which will be added later via OTA update. Updates may have varying rates of progress; Please refer to the official MIUI website (en.miui.com) for future releases.

Front camera
20MP Front Camera
20MP front camera with 0.9μm ƒ/2.0 aperture
Front camera photography features
Front camera HDR | Front camera display brightness correction | Selfie timer | Face recognition | Magic mirror | Age recognition
Eye light | AI Beautify | AI feature adjustment | AI makeup | AI portrait mode | AI scene detection | AI studio lighting | AI lens flare

Front camera video features
Short videos (speed adjustment, beauty filters and popular music) | Front camera video Beautify

1080p recording 30fps
720p recording 30fps
Fingerprint unlock
Improved In-screen Fingerprint Sensor

Charging and battery
3300mAh (typ) / 3200mAh (min)
Built-in rechargeable battery
USB Type-C reversible connector port
TÜV Rheinland Certified Safe Fast-Charge System
The world’s first 20W wireless charging
WPC wireless charging standard Qi mid-range power EPP certified
Supports 27W wired fast charging
Supports QC4.0 quick charging protocol
Includes 18W wire charger

*The phone supports QC4+ charging protocols. An 18W QC3.0 charger is included with the phone.

Network & Connectivity
Supports use of dual SIM cards from different carriers;
both cards can access 4G connectivity simultaneously①
Dual Nano-SIM slots; either card can be set as the primary card
Supports 4G+/4G/3G/2G
Supports dual SIM VoLTE HD calling②

Note ①: Dual 4G SIM requires the support of local telecom operator services, and may not be available in all regions.
Note ②: Only certain regions and telecom operators support VoLTE.

Supported network bands
4G: LTE FDD: B1/2/3/4/5/7/8/12/20/28
LTE TDD: B38/B39/B40
3G: WCDMA: B1/B2/B4/B5/B8
TDSCDMA: B34/B39
CDMA EVDO BC0
2G: GSM: B2/B3/B5/B8
CDMA 1X: BC0
Supports 4×4 MIMO | HPUE | HO RxD

Wireless network
Supports protocols: 802.11a/b/g/n/ac
Supports 2.4G Wi-Fi / 5G Wi-Fi / Wi-Fi Direct / Wi-Fi Display, supports WPA3
Supports Wi-Fi 2×2 MIMO technology, supports MU-MIMO
Supports Bluetooth 5.0, Qualcomm TrueWireless™ Stereo Plus
Support AAC/LDAC/aptX/aptX-HD audio frequencies

NFC
Supports Android Pay

Dimensions
Height: 157.5mm
Width: 74.67mm
Thickness: 7.61mm
Weight: 173g

Navigation and positioning
Dual-frequency GPS
Simultaneously receives L1 /L5 frequency GPS signals
Positioning systems:
GPS:L1+L5 | Galileo:E1+E5a | GLONASS:L1 | Beidou:B1
A-GPS assisted positioning | Electronic compass | Wireless network | Data network

Speaker
Ultralinear speaker
Loud audio output amplified by Smart PA
Equivalent to 0.9cc large speaker box
Added bass materials for a deep bass sound
Audio playback
MP4 | M4V | MKV | XVID | WAV | AAC | MP3 | AMR | FLAC | APE
Video playback
Supports H.264,MPEG4, VC-1,VP8, VP9
Supports HDR display when playing HDR10 video content

Sensors
Ultrasonic proximity sensor | In-screen ambient light sensor | Accelerometer | Gyroscope | Electronic compass
Linear motor | IR remote control | Camera laser focusing sensor

Package contents
Mi 9
Simple protective cover
Power adapter
USB Type-C cable
Type-C to audio adaptive cable
SIM eject tool
User guide
Warranty card