Home Phone comparison Vivo iQOO Z9x 5G and Xiaomi Mi 9 - Which is better?

Vivo iQOO Z9x 5G vs Xiaomi Mi 9

64 out 100
Vivo iQOO Z9x 5G
VS
50 out 100
Xiaomi Mi 9
Vivo iQOO Z9x 5G
Xiaomi Mi 9

Compared 2 smartphones : Vivo iQOO Z9x 5G Manufactured in April, 2024, with display 6.72 with chipsetQualcomm Snapdragon 6 Gen 1, 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 Vivo iQOO Z9x 5G
  • Larger display: 6.72in
  • Higher refresh rate: 120Hz
  • Higher battery capacity: 6000mAh vs 3300mAh
  • Newer Bluetooth version: 5.1 vs 5
  • Includes charger
Reasons to choose Xiaomi Mi 9
  • Higher pixel density: 403ppi
  • Lighter design: 173g vs 199g
  • Infrared port

Versions

Available versions and configurations
Memory Options - 4/128 GB
- 6/128 GB
- 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 Vivo iQOO Z9x 5G 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:
Vivo iQOO Z9x 5G
vs
Xiaomi Mi 9

Display

Display quality comparison
Type IPS LCD AMOLED
Size 6.72 in 6.39 in
Resolution 1080x2408 pixels 1080x2340 pixels
Aspect ratio 20:9 19.5:9
Pixel density 393 ppi 403 ppi
Refresh rate 120 Hz 60 Hz
Adaptive refresh rate Yes No
Max brightness 1000 nits 600 nits
HDR support No Yes HDR10
Touch Sampling Rate 300 Hz n/a
Screen-to-body ratio 86.5 % 85.3 %
Features DCI-P3 - Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Vivo iQOO Z9x 5G
n/a
Xiaomi Mi 9
619 nits
sRGB gamutn/a95.4 %
PWM (Flicker)n/a245 Hz
Response timen/a4.2 ms
Contrastn/a∞ Infinite
Sources: NotebookCheck [Xiaomi Mi 9]

Design & Build

Design and ergonomics comparison
Height 165.7 mm (6.52 in) 157.5 mm (6.2 in)
Width 76 mm (2.99 in) 74.6 mm (2.94 in)
Thickness 7.99 mm (0.31 in) 7.6 mm (0.3 in)
Weight 199 g (7.02 oz) 173 g (6.1 oz)
Water resistance IP64 No
Back panel Plastic Glass
Frame Plastic Metal
Colors - Black
- Green		 - Black
- Blue
- Purple
Fingerprint sensor Yes In-Button Yes In-Display
Screen-to-body ratio
Vivo iQOO Z9x 5G
86.5 %
Xiaomi Mi 9
85.3 %

Performance

Testing Vivo iQOO Z9x 5G and Xiaomi Mi 9 In benchmarks
Processor
Chipset Qualcomm Snapdragon 6 Gen 1 Qualcomm Snapdragon 855
Max Frequency 2200 MHz 2840 MHz
CPU Cores 8 (4 + 4) 8 (1 + 3 + 4)
Architecture - 4/1.8 (Cortex-A55)
- 4/2.2 (Cortex-A78)		 - 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 Samsung TSMC
Transistor Size 4 nm 7 nm
Neural Processor Yes Hexagon 690
Graphics Adreno 710 Adreno 640
GPU Cores 256 768
GPU Frequency 676 MHz 585 MHz
FLOPS 346.1 GFLOPS 898.5 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Vivo iQOO Z9x 5G
933
Xiaomi Mi 9
898
Geekbench 6 (Multi-Core)
Vivo iQOO Z9x 5G
2799
Xiaomi Mi 9
2206
Geekbench 6 (Single-Core)933898
Geekbench 6 (Multi-Core)27992206
Sources: Geekbench v6 [Vivo iQOO Z9x 5G]
AnTuTu 10
AnTuTu 10
Vivo iQOO Z9x 5G
573302
Xiaomi Mi 9
651041
CPU202922209300
GPU109755191747
Memory128600113809
UX132025136185
NanoReview Score573302651041
3DMark Wild Life
3DMark Wild Life
Vivo iQOO Z9x 5G
n/a
Xiaomi Mi 9
3100
Max Surface Temp.n/a35.6 °C
Stabilityn/a91 %
Graphics Testn/a18 fps
Graphics Scoren/a3100
Sources: 3DMark [Xiaomi Mi 9]
PCMark 3.0
PCMark 3.0
Vivo iQOO Z9x 5G
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 LPDDR4X LPDDR4X
Memory Frequency 2133 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB		128 GB
Storage TypeUFS 2.2UFS 2.1
Memory CardMicroSDNo

Software

OS Android 14 Android 9.0 (Upgradeable to Android 11)
OS Size n/a 13.5 GB
UI Skin Funtouch OS 14 MIUI 12.5

Battery

Volume 6000 mAh 3300 mAh
Max Charging Power 44 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 (50% in 26 min) Yes Quick Charge 4 (50% in 30 min)
Full Charge Time 1:11 h 1:30 h
Battery Life Test
Battery Life
Vivo iQOO Z9x 5G
n/a
Xiaomi Mi 9
17:14
Web Browsingn/a06:08 h
Video Playbackn/a11:37 h
Gamesn/a04:07 h
Standby Moden/a83 h

Main camera

Matrix 50 MP 48 MP
Photo resolution n/a 8000x6000 pixels
Zoom Digital Optical, 2x
Flash LED Dual LED
Stabilization Digital Digital
8K Recording No No
4K Recording Yes (Up to 30 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 240 fps (720p) 960 fps (1080p)
Wide-angle lens n/a 117 °
Lenses count Standard: 50 MP
Depth: 2 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/1.8f/1.8
Focal lengthn/a27 mm
SensorSamsung S5KJN1Sony IMX586
Sensor size1/1.951/2
Pixel size0.64 μm0.8 μm
AutofocusPhase autofocusLaser autofocus
StabilizationDigitalDigital
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
Matrixn/a16 MP
Aperturen/af/2.2
Focal lengthn/a13 mm
Sensorn/aSony IMX481
Sensor sizen/a1/3.0
Pixel sizen/a1 μm
Stabilizationn/aDigital
Main camera DxOMark results
Photo quality
Vivo iQOO Z9x 5G
n/a
Xiaomi Mi 9
112
Video quality
Vivo iQOO Z9x 5G
n/a
Xiaomi Mi 9
99
Overall camera score
Vivo iQOO Z9x 5G
n/a
Xiaomi Mi 9
107
Sources: DxOMark [Xiaomi Mi 9]

Front camera

Matrix 8 MP 20 MP
Photo resolution n/a 5184x3880 pixels
Aperture f/2.1 f/2.0
Focal length n/a 18 mm
Sensor Samsung S5K4H7 CMOS
Sensor size 1/4 1/3
Pixel size 1.12 μm 0.9 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- 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
DisplayPort No n/a
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Varies by region Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM 850/900/1800 MHzGSM 850, GSM 900, GSM 1800, GSM 1900
3G BandsWCDMA B1/B5/B8HSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100
LTE Bands*LTE (B1/B3/B5/B7/B8/B20/B28/B38/B40/B41)LTE (B800/B900/B1800/B2100/B2300/B2500/B2600)
LTE categoryn/a20
5G SupportYesNo

Sound

Speakers Stereo Mono
3.5 mm Jack Yes No
FM Radio No No
Dolby Atmos n/a No
Speaker Test
Max Volume
Vivo iQOO Z9x 5G
n/a
Xiaomi Mi 9
87.1 dB

Other

Class Mid-range Flagship
Announced April, 2024 yr February, 2019 yr
Release Date April, 2024 yr April, 2019 yr
Launch Price ($) 165 460
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 44 W n/a

Note

Vivo iQOO Z9x 5G:

Chinese version of Vivo T3x.

* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Vivo iQOO Z9x 5G the clear winner in this comparison.

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