Home Phone comparison Xiaomi 15 Ultra and Xiaomi Mi 9 - Which is better?

Xiaomi 15 Ultra vs Xiaomi Mi 9

95 out 100
Xiaomi 15 Ultra
VS
50 out 100
Xiaomi Mi 9
Xiaomi 15 Ultra
Xiaomi Mi 9

Compared 2 smartphones : Xiaomi 15 Ultra Manufactured in February, 2025, with display 6.73 with chipsetQualcomm Snapdragon 8 Elite, 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 15 Ultra
  • Larger display: 6.73in
  • Higher pixel density: 522ppi
  • Higher refresh rate: 120Hz
  • Higher battery capacity: 5410mAh vs 3300mAh
  • Newer Bluetooth version: 6.0 vs 5
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Supports Dolby Atmos
  • Built-in eSIM
  • Includes charger
Reasons to choose Xiaomi Mi 9
  • Lighter design: 173g vs 226g

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 16/512 GB
- 16/1024 GB		 - 6/64 GB
- 6/128 GB
- 8/64 GB
- 8/128 GB
- 8/256 GB

Review

Key Specs Xiaomi 15 Ultra 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 15 Ultra
vs
Xiaomi Mi 9

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.73 in 6.39 in
Resolution 1440x3200 pixels 1080x2340 pixels
Aspect ratio 20:9 19.5:9
Pixel density 522 ppi 403 ppi
Refresh rate 120 Hz 60 Hz
Adaptive refresh rate Yes (1-120 Hz) No
Max brightness n/a 600 nits
HDR support Yes Dolby Vision Yes HDR10
Touch Sampling Rate 300 Hz n/a
Screen-to-body ratio 90 % 85.3 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Xiaomi 15 Ultra
1599 nits
Xiaomi Mi 9
619 nits
sRGB gamut99.7 %95.4 %
PWM (Flicker)120 Hz245 Hz
Response time1 ms4.2 ms
Contrast∞ Infinite∞ Infinite
Sources: NotebookCheck [Xiaomi 15 Ultra], [Xiaomi Mi 9]

Design & Build

Design and ergonomics comparison
Height 161.3 mm (6.35 in) 157.5 mm (6.2 in)
Width 75.3 mm (2.96 in) 74.6 mm (2.94 in)
Thickness 9.35 mm (0.37 in) 7.6 mm (0.3 in)
Weight 226 g (7.97 oz) 173 g (6.1 oz)
Water resistance IP68 No
Cooling system Vapor chamber n/a
Back panel Glass Glass
Frame Metal Metal
Colors - White
- Black
- Silver
- Green		 - Black
- Blue
- Purple
Fingerprint sensor Yes In-Display Yes In-Display
Screen-to-body ratio
Xiaomi 15 Ultra
90 %
Xiaomi Mi 9
85.3 %

Performance

Testing Xiaomi 15 Ultra and Xiaomi Mi 9 In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite Qualcomm Snapdragon 855
Max Frequency 4320 MHz 2840 MHz
CPU Cores 8 (2 + 6) 8 (1 + 3 + 4)
Architecture - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))		 - 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 3 nm 7 nm
Neural Processor Hexagon Hexagon 690
Graphics Adreno 830 Adreno 640
GPU Cores 1536 768
GPU Frequency 1100 MHz 585 MHz
FLOPS 3379.2 GFLOPS 898.5 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi 15 Ultra
3008
Xiaomi Mi 9
898
Geekbench 6 (Multi-Core)
Xiaomi 15 Ultra
9065
Xiaomi Mi 9
2206
Geekbench 6 (Single-Core)3008898
Geekbench 6 (Multi-Core)90652206
Sources: Geekbench v6 [Xiaomi 15 Ultra]
AnTuTu 10
AnTuTu 10
Xiaomi 15 Ultra
2544373
Xiaomi Mi 9
651041
CPU558586209300
GPU1040161191747
Memory520300113809
UX425326136185
NanoReview Score2544373651041
3DMark Wild Life
3DMark Wild Life
Xiaomi 15 Ultra
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
Xiaomi 15 Ultra
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 12 GB 6 GB
Memory Type LPDDR5X LPDDR4X
Memory Frequency 5333 MHz 2133 MHz
Channels 2 2
Storage
Storage Capacity256 GB128 GB
Storage TypeUFS 4.1UFS 2.1
Memory CardNoNo

Software

OS Android 15 Android 9.0 (Upgradeable to Android 11)
OS Size 23.9 GB 13.5 GB
UI Skin HyperOS 2.0 MIUI 12.5

Battery

Volume 5410 mAh 3300 mAh
Max Charging Power 90 W 27 W
Battery Type Silicon Carbon (Si/C) Li-Po
Removable No No
Wireless Charging Yes (80 W) Yes (20 W)
Reverse Charging Yes (Wireless) No
Fast Charging Yes (72% in 30 min) Yes Quick Charge 4 (50% in 30 min)
Full Charge Time 0:51 h 1:30 h
Battery Life Test
Battery Life
Xiaomi 15 Ultra
30:03
Xiaomi Mi 9
17:14
Web Browsing12:19 h06:08 h
Video Playback18:43 h11:37 h
Games06:45 h04:07 h
Standby Mode141 h83 h

Main camera

Matrix 50 MP 48 MP
Photo resolution 8192x6144 pixels 8000x6000 pixels
Zoom Optical, 4.3x Optical, 2x
Flash Dual LED Dual LED
Stabilization Optical Digital
8K Recording Yes (Up to 30 fps) No
4K Recording Yes (Up to 120 fps) Yes (Up to 60 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 1920 fps (1080p) 960 fps (1080p)
Wide-angle lens 115 ° 117 °
Lenses count Standard: 50 MP
Telephoto: 200 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Depth		 Standard: 48 MP
Telephoto: 12 MP
Ultra-wide: 16 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP48 MP
Aperturef/1.63f/1.8
Focal length23 mm27 mm
SensorSony LYT-900Sony IMX586
Sensor size1/1.01/2
Pixel size1.6 μm0.8 μm
AutofocusLaser autofocusLaser autofocus
StabilizationOpticalDigital
Telephoto
Matrix200 MP12 MP
Aperturef/2.6f/2.2
Focal length100 mm54 mm
SensorSamsung ISOCELL S5KHP9Samsung S5K3M5
Sensor size1/1.41/3.6
Pixel size0.56 μm1 μm
StabilizationOpticalDigital
Ultra-wide lens
Matrix50 MP16 MP
Aperturef/2.2f/2.2
Focal length14 mm13 mm
SensorSamsung S5KJN5Sony IMX481
Sensor size1/2.761/3.0
Pixel size0.64 μm1 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Xiaomi 15 Ultra
158
Xiaomi Mi 9
112
Video quality
Xiaomi 15 Ultra
134
Xiaomi Mi 9
99
Overall camera score
Xiaomi 15 Ultra
153
Xiaomi Mi 9
107
Bokeh80n/a
Preview89n/a
Sources: DxOMark [Xiaomi 15 Ultra], [Xiaomi Mi 9]

Front camera

Matrix 32 MP 20 MP
Photo resolution 6528x4896 pixels 5184x3880 pixels
Aperture f/2.0 f/2.0
Focal length 22 mm 18 mm
Sensor Omnivision OV32B CMOS
Sensor size 1/3.14 1/3
Pixel size 0.7 μm 0.9 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) 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 6.0 5
Bluetooth features LE LE, A2DP
USB type USB Type-C USB Type-C
USB version 3.2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- USB-Host mode
- OTG
DisplayPort Yes n/a
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
- NAVIC		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G BandsGSM 2/3/5/8GSM 850, GSM 900, GSM 1800, GSM 1900
3G BandsWCDMA 1/2/4/5/6/8/19HSDPA 850, HSDPA 900, HSDPA 1900, HSDPA 2100
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B17/B18/B19/B20/B26/B28/B34/B38/B39/B40/B41/B42/B48/B66)LTE (B800/B900/B1800/B2100/B2300/B2500/B2600)
LTE categoryn/a20
5G SupportYesNo

Sound

Speakers n/a Mono
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes No
Speaker Test
Max Volume
Xiaomi 15 Ultra
92.1 dB
Xiaomi Mi 9
87.1 dB

Other

Class Flagship Flagship
Announced February, 2025 yr February, 2019 yr
Release Date February, 2025 yr April, 2019 yr
Launch Price ($) n/a 460
MSRP ($) 1099 n/a
Sensors - Barometer
- 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 90 W n/a

Note

Xiaomi 15 Ultra:

The Chinese version of the Xiaomi 15 Ultra has a 6000 mAh battery, while the international model comes with 5410 mAh, leading to a noticeable difference in battery life.

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

Results

After analyzing the data, we consider Xiaomi 15 Ultra the clear winner in this comparison.

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