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4G Super AM-OLED Smartphone

Xiaomi Mi 9 Transparent Premium Edition Dual SIM TD-LTE CN 256GB M1902F1A (Xiaomi Cepheus)

Xiaomi · Announced Feb 2019

About Xiaomi Mi 9

The Xiaomi Mi 9 presents a 6.39‑inch AM‑OLED display with a Full HD+ resolution of 1080×2340 pixels, offering bright colours and deep contrast in a compact form factor. Its chassis measures 74.67 mm wide, 157.5 mm tall and just 7.61 mm thick, tipping the scales at a lightweight 173 grams. Running Android 9.0 Pie straight out of the box, the phone is paired with 6 GB of RAM to handle everyday tasks and multitasking with ease.

Powering the device is a 3300 mAh battery that supports 20 W wired charging, allowing for a relatively quick top‑up when needed. Connectivity is handled through a single SIM slot, keeping the design simple and streamlined. Together, the vivid display, solid memory configuration, and modest battery capacity give the Xiaomi Mi 9 a balanced profile suited for users seeking a reliable Android experience without excess bulk.

This variant

The Xiaomi Mi 9 Transparent Premium Edition stands out with its see‑through glass back that reveals the internal components, a design cue absent from the standard Mi 9 lineup. Beyond the distinctive look, this model steps up the memory to 12 GiB of RAM, providing extra headroom for multitasking and demanding applications.

Compared with the other Mi 9 variants listed—whether the Premium, Standard or Global editions—this is the only version that couples the transparent premium finish with 12 GiB of memory, while all others offer either 6 GiB or 8 GiB. The rest of the core specifications (display size, resolution, battery, charging speed and dimensions) remain unchanged from the base Mi 9.

Technical Specifications

Display
Size
6.39 inch
Type
Super AM-OLED
Resolution
1080x2340
Color depth
30-bit, 10-bit HDR
Panel
Samsung
Screen-to-body
85.2%
Active area
68.01 × 147.36 mm
Touch
Capacitive multi-touch sensing screen, 10-point
Notch
Yes
Performance
Processor
Snapdragon 855
CPU
Octa-core, up to 2.8 GHz
GPU
Qualcomm Adreno 640
Process
7 nm
Platform
Google Android
Memory
RAM
12 GiB
Battery
Capacity
3300 mAh
Type
Lithium-ion polymer (LiPo)
Energy
12.71 Wh
Voltage
3.85 V
Charging
20W
Cameras
Main
8000×6000 · 2× optical visibility
Main
visibility
Main
Front
5184×3840 visibility
Dimensions
Size
74.67 × 157.5 × 7.61 mm
Weight
173 g
Connectivity
Wi-Fi
Wi-Fi 5
Wi-Fi services
Wi-Fi Direct, Wi-Fi Tethering, WiDi, Wi-Fi Calling (VoWiFi)
Bluetooth profiles
A2DP, A2DP with aptX codec, A2DP with aptX HD codec, AVRCP, HID, HSP, OPP, PAN, PBA
USB
USB Type-C reversible
USB services
USB charging, USB fast charging, USB Host, USB On-The-Go 1.3, USB On-The-Go 2.0, USB Power Delivery
NFC
NFC A, NFC B
GPS
GPS, GLONASS, Galileo, BeiDou, QZSS
GPS services
Simultaneous GPS (S-GPS), Assisted GPS, Kétfrekvenciás GPS, Geotagging, QuickGPS, QZSS
LTE · 10 bandsTD-LTE · 6 bandsUMTS · 5 bandsGSM · 4 bandsCDMA · 1 bandsTD-SCDMA · 2 bands
All LTE bands (10)
  • LTE 1700/2100 MHz (Band 4, AWS)
  • LTE 1800 MHz (Band 3)
  • LTE 1900 MHz (Band 2, PCS)
  • LTE 2100 MHz (Band 1)
  • LTE 2600 MHz (Band 7)
  • LTE 700 MHz (Band 12)
  • LTE 700 MHz (Band 17)
  • LTE 800 MHz (Band 20)
  • LTE 850 MHz (Band 5)
  • LTE 900 MHz (Band 8)
All TD-LTE bands (6)
  • TD-LTE 1900 MHz (Band 39)
  • TD-LTE 2000 MHz (Band XXXIV)
  • TD-LTE 2300 MHz (Band XL)
  • TD-LTE 2500 MHz (Band XLI)
  • TD-LTE 2500 MHz (Band XLI) bands
  • TD-LTE 2600 MHz (Band 38)
All UMTS bands (5)
  • UMTS 1700/2100MHz (Band IV, AWS)
  • UMTS 1900MHz (Band II, PCS)
  • UMTS 2100MHz (Band I, IMT)
  • UMTS 850MHz (Band V, CLR)
  • UMTS 900MHz (Band VIII)
All GSM bands (4)
  • GSM 1800MHz (B3)
  • GSM 1900MHz (PCS, B2)
  • GSM 850MHz (B5)
  • GSM 900MHz (B8)
All CDMA bands (1)
  • CDMA 800MHz (BC0, 850)
All TD-SCDMA bands (2)
  • TD-SCDMA 1900 MHz (B39)
  • TD-SCDMA 2000 MHz (B34)
Audio
Channels
stereo
Output
USB Type-C
Sensors
Sensors
Accelerometer, Compass, Gyroscope, Hall sensor, In-screen fingerprint sensor, Light intensity sensor, Proximity sensor
Features
Fingerprint
Yes (in-screen fingerprint sensor)
SIM
Nano-SIM (4FF) · Dual standby
Carrier
China Telecom Corporation Limited China Unicom Netcom Limited
Markets
Asia (China)
Extras
Haptic touch feedback, Tactile touch feedback
Software extras
Voice Command, Navigation software, Augmented Reality (AR), Intelligent personal assistant, Face Recognition
Regulatory
Data status
Final

Model Variants

7 other phones with the same base model: Xiaomi Mi 9

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