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

Xiaomi 15 Ultra vs OnePlus 15T

95 out 100
Xiaomi 15 Ultra
VS
92 out 100
OnePlus 15T
Xiaomi 15 Ultra
OnePlus 15T

Compared 2 smartphones : Xiaomi 15 Ultra Manufactured in February, 2025, with display 6.73 with chipsetQualcomm Snapdragon 8 Elite, vs OnePlus 15T, Manufactured in March, 2026 with chipsetQualcomm Snapdragon 8 Elite Gen 5. 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
  • Supports newer USB: 3.2 vs 2
  • Supports Dolby Atmos
Reasons to choose OnePlus 15T
  • Higher refresh rate: 165Hz
  • Lighter design: 194g vs 226g
  • Higher battery capacity: 7500mAh vs 5410mAh

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 OnePlus 15T
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.
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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
OnePlus 15T

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.73 in 6.32 in
Resolution 1440x3200 pixels 1216x2640 pixels
Aspect ratio 20:9 19.5:9
Pixel density 522 ppi 460 ppi
Refresh rate 120 Hz 165 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (60-165 Hz)
Max brightness n/a 1800 nits
HDR support Yes Dolby Vision Yes, Dolby Vision
Touch Sampling Rate 300 Hz 330 Hz
Screen-to-body ratio 90 % 90.7 %
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
OnePlus 15T
1103 nits
sRGB gamut99.7 %99.9 %
PWM (Flicker)120 Hz120 Hz
Response time1 ms6 ms
Contrast∞ Infinite∞ Infinite
Sources: NotebookCheck [Xiaomi 15 Ultra], [OnePlus 15T]

Design & Build

Design and ergonomics comparison
Height 161.3 mm (6.35 in) 150.56 mm (5.93 in)
Width 75.3 mm (2.96 in) 71.82 mm (2.83 in)
Thickness 9.35 mm (0.37 in) 8.35 mm (0.33 in)
Weight 226 g (7.97 oz) 194 g (6.84 oz)
Water resistance IP68 IP69
Cooling system Vapor chamber Vapor chamber
Back panel Glass Plastic
Frame Metal Metal
Colors - White
- Black
- Silver
- Green		 - White
- Green
- Brown
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Xiaomi 15 Ultra
90 %
OnePlus 15T
90.7 %

Performance

Testing Xiaomi 15 Ultra and OnePlus 15T In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite Qualcomm Snapdragon 8 Elite Gen 5
Max Frequency 4320 MHz 4608 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/3.53 (Oryon (Phoenix M))
- 2/4.32 (Oryon (Phoenix L))		 - 6/3.63 (Oryon Gen 3 Performance)
- 2/4.61 (Oryon Gen 3 Prime)
Process TSMC TSMC
Transistor Size 3 nm 3 nm
Neural Processor Hexagon Hexagon
Graphics Adreno 830 n/a
GPU Cores 1536 n/a
GPU Frequency 1100 MHz n/a
FLOPS 3379.2 GFLOPS n/a
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi 15 Ultra
3008
OnePlus 15T
3640
Geekbench 6 (Multi-Core)
Xiaomi 15 Ultra
9065
OnePlus 15T
11033
Geekbench 6 (Single-Core)30083640
Geekbench 6 (Multi-Core)906511033
Sources: Geekbench v6 [Xiaomi 15 Ultra], [OnePlus 15T]
AnTuTu 10
AnTuTu 10
Xiaomi 15 Ultra
2544373
OnePlus 15T
3676955
CPU5585861052960
GPU10401611369637
Memory520300479431
UX425326774927
NanoReview Score25443733676955

Memory

RAM
RAM Size 12 GB 12 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency 5333 MHz 5300 MHz
Channels 2 4
Storage
Storage Capacity256 GB256 GB
Storage TypeUFS 4.1UFS 4.1
Memory CardNoNo

Software

OS Android 15 Android 16
OS Size 23.9 GB 57 GB
UI Skin HyperOS 2.0 ColorOS 16

Battery

Volume 5410 mAh 7500 mAh
Max Charging Power 90 W 100 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
Fast Charging Yes (72% in 30 min) Yes (61% in 30 min)
Full Charge Time 0:51 h 0:46 h
Battery Life Test
Battery Life
Xiaomi 15 Ultra
30:03
OnePlus 15T
n/a
Web Browsing12:19 hn/a
Video Playback18:43 hn/a
Games06:45 hn/a
Standby Mode141 hn/a

Main camera

Matrix 50 MP 50 MP
Photo resolution 8192x6144 pixels 8192x6144 pixels
Zoom Optical, 4.3x Optical, 3.5x
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 120 fps)
Slow Motion 1920 fps (1080p) 480 fps (720p)
Wide-angle lens 115 ° n/a
Lenses count Standard: 50 MP
Telephoto: 200 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Depth		 Standard: 50 MP
Telephoto: 50 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP50 MP
Aperturef/1.63f/1.8
Focal length23 mm24 mm
SensorSony LYT-900Sony IMX906
Sensor size1/1.01/1.56 (0.64)
Pixel size1.6 μm1 μm
AutofocusLaser autofocusPhase autofocus
StabilizationOpticalOptical
Telephoto
Matrix200 MP50 MP
Aperturef/2.6f/2.8
Focal length100 mm85 mm
SensorSamsung ISOCELL S5KHP9Samsung S5KJN5
Sensor size1/1.41/2.76 (0.36)
Pixel size0.56 μm0.64 μm
StabilizationOpticalOptical
Ultra-wide lens
Matrix50 MPn/a
Aperturef/2.2n/a
Focal length14 mmn/a
SensorSamsung S5KJN5n/a
Sensor size1/2.76n/a
Pixel size0.64 μmn/a
StabilizationDigitaln/a
Main camera DxOMark results
Photo quality
Xiaomi 15 Ultra
158
OnePlus 15T
n/a
Video quality
Xiaomi 15 Ultra
134
OnePlus 15T
n/a
Overall camera score
Xiaomi 15 Ultra
153
OnePlus 15T
n/a
Bokeh80n/a
Preview89n/a
Sources: DxOMark [Xiaomi 15 Ultra]

Front camera

Matrix 32 MP 16 MP
Photo resolution 6528x4896 pixels n/a
Aperture f/2.0 f/2.4
Focal length 22 mm 23 mm
Sensor Omnivision OV32B CMOS
Sensor size 1/3.14 n/a
Pixel size 0.7 μm 1 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 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 6.0
Bluetooth features LE LE
USB type USB Type-C USB Type-C
USB version 3.2 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
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 850/900/1800MHz
3G BandsWCDMA 1/2/4/5/6/8/19WCDMA 1/2/4/5/8
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 (B1/B2/B3/B4/B5/B7/B8/B18/B19/B26/B28/B34/B38/B39/B40/B41/B42/B43/B48/B66)
5G SupportYesYes

Sound

3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes No
Speaker Test
Max Volume
Xiaomi 15 Ultra
92.1 dB
OnePlus 15T
81.5 dB

Other

Class Flagship Flagship
Announced February, 2025 yr March, 2026 yr
Release Date February, 2025 yr March, 2026 yr
MSRP ($) 1099 799
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, 100 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.

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