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

Xiaomi 15 Ultra vs Xiaomi 15

95 out 100
Xiaomi 15 Ultra
VS
93 out 100
Xiaomi 15
Xiaomi 15 Ultra
Xiaomi 15

Compared 2 smartphones : Xiaomi 15 Ultra Manufactured in February, 2025, with display 6.73 with chipsetQualcomm Snapdragon 8 Elite, vs Xiaomi 15, Manufactured in October, 2024with chipsetQualcomm Snapdragon 8 Elite. 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 battery capacity: 5410mAh vs 5400mAh
  • Newer Bluetooth version: 6.0 vs 5.4
Reasons to choose Xiaomi 15
  • Lighter design: 191g vs 226g

Versions

Available versions and configurations
Memory Options - 12/256 GB
- 16/512 GB
- 16/1024 GB		 - 12/256 GB
- 12/512 GB
- 16/256 GB
- 16/512 GB
- 16/1024 GB

Review

Key Specs Xiaomi 15 Ultra and Xiaomi 15
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 15

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.73 in 6.36 in
Resolution 1440x3200 pixels 1200x2670 pixels
Aspect ratio 20:9 20:9
Pixel density 522 ppi 460 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (1-120 Hz)
Max brightness n/a 1500 nits
HDR support Yes Dolby Vision Yes Dolby Vision
Touch Sampling Rate 300 Hz 300 Hz
Screen-to-body ratio 90 % 90.1 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Xiaomi 15 Ultra
1599 nits
Xiaomi 15
1508 nits
sRGB gamut99.7 %99.5 %
PWM (Flicker)120 Hz120 Hz
Response time1 ms1 ms
Contrast∞ Infinite∞ Infinite
Sources: NotebookCheck [Xiaomi 15 Ultra], [Xiaomi 15]

Design & Build

Design and ergonomics comparison
Height 161.3 mm (6.35 in) 152.3 mm (6 in)
Width 75.3 mm (2.96 in) 71.2 mm (2.8 in)
Thickness 9.35 mm (0.37 in) 8.08 mm (0.32 in)
Weight 226 g (7.97 oz) 191 g (6.74 oz)
Water resistance IP68 IP68
Cooling system Vapor chamber Vapor chamber
Back panel Glass Glass
Frame Metal Metal
Colors - White
- Black
- Silver
- Green		 - White
- Black
- Silver
- Green
- Purple
Fingerprint sensor Yes In-Display Yes In-Display
Screen-to-body ratio
Xiaomi 15 Ultra
90 %
Xiaomi 15
90.1 %

Performance

Testing Xiaomi 15 Ultra and Xiaomi 15 In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite Qualcomm Snapdragon 8 Elite
Max Frequency 4320 MHz 4320 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))		 - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))
Process TSMC TSMC
Transistor Size 3 nm 3 nm
Neural Processor Hexagon Hexagon
Graphics Adreno 830 Adreno 830
GPU Cores 1536 1536
GPU Frequency 1100 MHz 1100 MHz
FLOPS 3379.2 GFLOPS 3379.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi 15 Ultra
3008
Xiaomi 15
2934
Geekbench 6 (Multi-Core)
Xiaomi 15 Ultra
9065
Xiaomi 15
8762
Geekbench 6 (Single-Core)30082934
Geekbench 6 (Multi-Core)90658762
Geekbench Compute (GPU)n/a24507
Sources: Geekbench v6 [Xiaomi 15 Ultra], [Xiaomi 15]
AnTuTu 10
AnTuTu 10
Xiaomi 15 Ultra
2544373
Xiaomi 15
2620144
CPU558586584725
GPU10401611142381
Memory520300519406
UX425326373632
NanoReview Score25443732620144
3DMark Wild Life
3DMark Wild Life
Xiaomi 15 Ultra
n/a
Xiaomi 15
20823
Sources: 3DMark [Xiaomi 15]
PCMark 3.0
PCMark 3.0
Xiaomi 15 Ultra
n/a
Xiaomi 15
18292
Writing scoren/a22508
Web scoren/a18826
Video editingn/a8060
Data manipulationn/a14605
NanoReview Scoren/a18292

Memory

RAM
RAM Size 12 GB - 12 GB
- 16 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency 5333 MHz n/a
Channels 2 2
Storage
Storage Capacity256 GB- 256 GB
- 512 GB
- 1024 GB
Storage TypeUFS 4.1UFS 4.0
Memory CardNoNo

Software

OS Android 15 Android 15
OS Size 23.9 GB 21 GB
UI Skin HyperOS 2.0 HyperOS 2.0

Battery

Volume 5410 mAh 5400 mAh
Max Charging Power 90 W 90 W
Battery Type Silicon Carbon (Si/C) Silicon Carbon (Si/C)
Removable No No
Wireless Charging Yes (80 W) Yes (50 W)
Reverse Charging Yes (Wireless) Yes (Wireless)
Fast Charging Yes (72% in 30 min) Yes (83% in 30 min)
Full Charge Time 0:51 h 0:45 h
Battery Life Test
Battery Life
Xiaomi 15 Ultra
30:03
Xiaomi 15
31:54
Web Browsing12:19 h13:20 h
Video Playback18:43 h19:22 h
Games06:45 h07:10 h
Standby Mode141 h150 h

Main camera

Matrix 50 MP 50 MP
Photo resolution 8192x6144 pixels 8192x6144 pixels
Zoom Optical, 4.3x Optical, 2.6x
Flash Dual LED Dual LED
Stabilization Optical Optical
8K Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
4K Recording Yes (Up to 120 fps) Yes (Up to 120 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 1920 fps (1080p) 1920 fps (720p)
Wide-angle lens 115 ° 115 °
Lenses count Standard: 50 MP
Telephoto: 200 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Depth		 Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP50 MP
Aperturef/1.63f/1.6
Focal length23 mm23 mm
SensorSony LYT-900OmniVision OVX9000 Light Fusion 900
Sensor size1/1.01/1.31
Pixel size1.6 μm1.2 μm
AutofocusLaser autofocusLaser autofocus
StabilizationOpticalOptical
Telephoto
Matrix200 MP50 MP
Aperturef/2.6f/2.0
Focal length100 mm60 mm
SensorSamsung ISOCELL S5KHP9Samsung S5KJN5
Sensor size1/1.41/2.76
Pixel size0.56 μm0.64 μm
StabilizationOpticalOptical
Ultra-wide lens
Matrix50 MP50 MP
Aperturef/2.2f/2.2
Focal length14 mm14 mm
SensorSamsung S5KJN5Samsung S5KJN1
Sensor size1/2.761/2.76
Pixel size0.64 μm0.64 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Xiaomi 15 Ultra
158
Xiaomi 15
150
Video quality
Xiaomi 15 Ultra
134
Xiaomi 15
133
Overall camera score
Xiaomi 15 Ultra
153
Xiaomi 15
147
Bokeh8075
Preview8987
Zoomn/a152
Sources: DxOMark [Xiaomi 15 Ultra], [Xiaomi 15]

Front camera

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

Connectivity

Wi-Fi version Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be) Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 6.0 5.4
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 3.2 3.2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort Yes Yes
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
- NAVIC		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
- NAVIC
NFC* Yes Yes
Infrared Port Yes Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesYes
Hybrid SlotNoNo
2G BandsGSM 2/3/5/8GSM B2/B3/B5/B8
3G BandsWCDMA 1/2/4/5/6/8/19WCDMA B1/B2/B4/B5/B6/B8/B19
5G SupportYesYes

Sound

Speakers n/a Stereo
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Xiaomi 15 Ultra
92.1 dB
Xiaomi 15
91.3 dB

Other

Class Flagship Flagship
Announced February, 2025 yr October, 2024 yr
Release Date February, 2025 yr October, 2024 yr
Launch Price ($) n/a 757
MSRP ($) 1099 n/a
Sensors - Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes 90 W Yes 90 W

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

No clear favorite identified yet; updates may follow as new data arrives.

Survey

Which smartphone would you pick?
20 (32.26%)
42 (67.74%)
Total Votes: 62

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