Home Phone comparison Xiaomi 12X and Xiaomi Mi 9 - Which is better?

Xiaomi 12X vs Xiaomi Mi 9

63 out 100
Xiaomi 12X
VS
50 out 100
Xiaomi Mi 9
Xiaomi 12X
Xiaomi Mi 9

Compared 2 smartphones : Xiaomi 12X Manufactured in December, 2021, with display 6.28 with chipsetQualcomm Snapdragon 870, vs Xiaomi Mi 9, Manufactured in April, 2019 with chipsetQualcomm Snapdragon 855. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Xiaomi 12X
  • Higher pixel density: 419ppi
  • Higher refresh rate: 120Hz
  • Higher battery capacity: 4500mAh vs 3300mAh
  • Newer Bluetooth version: 5.1 vs 5
  • Supports Dolby Atmos
  • Includes charger
Reasons to choose Xiaomi Mi 9
  • Larger display: 6.39in
  • Lighter design: 173g vs 176g

Versions

Available versions and configurations
Memory Options - 8/128 GB
- 8/256 GB
- 12/256 GB		 - 6/64 GB
- 6/128 GB
- 8/64 GB
- 8/128 GB
- 8/256 GB

Review

Key Specs Xiaomi 12X and Xiaomi Mi 9
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
Adjust each parameter’s importance to find the best match for you.
Customize your score
Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison
Smartphones:
Xiaomi 12X
vs
Xiaomi Mi 9

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.28 in 6.39 in
Resolution 1080x2400 pixels 1080x2340 pixels
Aspect ratio 20:9 19.5:9
Pixel density 419 ppi 403 ppi
Refresh rate 120 Hz 60 Hz
Adaptive refresh rate Yes No
Max brightness 500 nits 600 nits
HDR support Yes HDR10+ Yes HDR10
Touch Sampling Rate 480 Hz n/a
Screen-to-body ratio 89.3 % 85.3 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Xiaomi 12X
924 nits
Xiaomi Mi 9
619 nits
sRGB gamut98.6 %95.4 %
PWM (Flicker)523 Hz245 Hz
Response time1 ms4.2 ms
Contrast∞ Infinite∞ Infinite
Sources: NotebookCheck [Xiaomi 12X], [Xiaomi Mi 9]

Design & Build

Design and ergonomics comparison
Height 152.7 mm (6.01 in) 157.5 mm (6.2 in)
Width 69.9 mm (2.75 in) 74.6 mm (2.94 in)
Thickness 8.16 mm (0.32 in) 7.6 mm (0.3 in)
Weight 176 g (6.21 oz) 173 g (6.1 oz)
Water resistance No No
Back panel Glass Glass
Frame Metal Metal
Colors - Black
- Blue
- Pink		 - Black
- Blue
- Purple
Fingerprint sensor Yes In-Display Yes In-Display
Screen-to-body ratio
Xiaomi 12X
89.3 %
Xiaomi Mi 9
85.3 %

Performance

Testing Xiaomi 12X and Xiaomi Mi 9 In benchmarks
Processor
Chipset Qualcomm Snapdragon 870 Qualcomm Snapdragon 855
Max Frequency 3200 MHz 2840 MHz
CPU Cores 8 (1 + 3 + 4) 8 (1 + 3 + 4)
Architecture - 4/1.8 (Kryo 585 Silver (Cortex-A55))
- 3/2.42 (Kryo 585 Gold (Cortex-A77))
- 1/3.2 (Kryo 585 Prime (Cortex-A77))		 - 4/1.8 (Cortex-A55 (Kryo 485 Silver))
- 3/2.42 (Cortex-A76 (Kryo 485 Gold))
- 1/2.84 (Cortex-A76 (Kryo 485 Gold))
Process TSMC TSMC
Transistor Size 7 nm 7 nm
Neural Processor Hexagon 698 Hexagon 690
Graphics Adreno 650 Adreno 640
GPU Cores 768 768
GPU Frequency 670 MHz 585 MHz
FLOPS 1029.1 GFLOPS 898.5 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi 12X
1297
Xiaomi Mi 9
898
Geekbench 6 (Multi-Core)
Xiaomi 12X
3428
Xiaomi Mi 9
2206
Geekbench 6 (Single-Core)1297898
Geekbench 6 (Multi-Core)34282206
Sources: Geekbench v6 [Xiaomi 12X]
AnTuTu 10
AnTuTu 10
Xiaomi 12X
806389
Xiaomi Mi 9
651041
CPU237508209300
GPU235693191747
Memory153330113809
UX179858136185
NanoReview Score806389651041
3DMark Wild Life
3DMark Wild Life
Xiaomi 12X
4251
Xiaomi Mi 9
3100
Max Surface Temp.37.6 °C35.6 °C
Stability98 %91 %
Graphics Test25 fps18 fps
Graphics Score42513100
Sources: 3DMark [Xiaomi 12X], [Xiaomi Mi 9]
PCMark 3.0
PCMark 3.0
Xiaomi 12X
n/a
Xiaomi Mi 9
10649
Writing scoren/a14618
Web scoren/a7084
Video editingn/a6715
Data manipulationn/a7931
NanoReview Scoren/a10649

Memory

RAM
RAM Size - 8 GB
- 12 GB		 6 GB
Memory Type LPDDR5 LPDDR4X
Memory Frequency n/a 2133 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB		128 GB
Storage TypeUFS 3.1UFS 2.1
Memory CardNoNo

Software

OS Android 11 (Upgradeable to Android 13) Android 9.0 (Upgradeable to Android 11)
OS Size 29.3 GB 13.5 GB
UI Skin HyperOS 1.0 MIUI 12.5

Battery

Volume 4500 mAh 3300 mAh
Max Charging Power 67 W 27 W
Battery Type Li-Po Li-Po
Removable No No
Wireless Charging No Yes (20 W)
Reverse Charging No No
Fast Charging Yes (78% in 30 min) Yes Quick Charge 4 (50% in 30 min)
Full Charge Time 0:48 h 1:30 h
Battery Life Test
Battery Life
Xiaomi 12X
22:44
Xiaomi Mi 9
17:14
Web Browsing09:35 h06:08 h
Video Playback14:39 h11:37 h
Games05:35 h04:07 h
Standby Mode101 h83 h

Main camera

Matrix 50 MP 48 MP
Photo resolution 8700x5800 pixels 8000x6000 pixels
Zoom Digital Optical, 2x
Flash Dual LED Dual LED
Stabilization Optical Digital
8K Recording Up to 24FPS No
4K Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) 960 fps (1080p)
Wide-angle lens 123 ° 117 °
Lenses count Standard: 50 MP
Ultra-wide: 13 MP
Macro: 5 MP		 Standard: 48 MP
Telephoto: 12 MP
Ultra-wide: 16 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP48 MP
Aperturef/1.9f/1.8
Focal length26 mm27 mm
SensorSony IMX766Sony IMX586
Sensor size1/1.561/2
Pixel size1 μm0.8 μm
AutofocusPhase autofocus (Dual Pixel)Laser autofocus
StabilizationOpticalDigital
Telephoto
Matrixn/a12 MP
Aperturen/af/2.2
Focal lengthn/a54 mm
Sensorn/aSamsung S5K3M5
Sensor sizen/a1/3.6
Pixel sizen/a1 μm
Stabilizationn/aDigital
Ultra-wide lens
Matrix13 MP16 MP
Aperturef/2.4f/2.2
Focal length12 mm13 mm
SensorOmniVision OV13B10Sony IMX481
Sensor size1/3.061/3.0
Pixel size1.12 μm1 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Xiaomi 12X
n/a
Xiaomi Mi 9
112
Video quality
Xiaomi 12X
n/a
Xiaomi Mi 9
99
Overall camera score
Xiaomi 12X
n/a
Xiaomi Mi 9
107
Sources: DxOMark [Xiaomi Mi 9]

Front camera

Matrix 32 MP 20 MP
Photo resolution 6528x4896 pixels 5184x3880 pixels
Aperture f/2.4 f/2.0
Focal length 26 mm 18 mm
Sensor OmniVision OV32B40 CMOS
Sensor size 1/3 1/3
Pixel size 0.7 μm 0.9 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 60 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 a/b/g/n/ac/ax) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.1 5
Bluetooth features LE LE, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- USB-Host mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo
- NAVIC		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Varies by region Yes
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *n/aNo
Hybrid SlotNoNo
2G BandsGSM 850 900 1800 1900 MHzGSM 850, GSM 900, GSM 1800, GSM 1900
3G BandsWCDMA B1/2/4/5/6/8/19HSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B26/B28/B32/B66)LTE (B800/B900/B1800/B2100/B2300/B2500/B2600)
LTE categoryn/a20
5G SupportYesNo

Sound

Speakers Stereo Mono
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes No
Speaker Test
Max Volume
Xiaomi 12X
90.1 dB
Xiaomi Mi 9
87.1 dB

Other

Class Flagship Flagship
Announced December, 2021 yr February, 2019 yr
Release Date December, 2021 yr April, 2019 yr
Launch Price ($) 650 460
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes 67 W n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Xiaomi 12X the clear winner in this comparison.

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