Home Phone comparison Xiaomi Poco X3 Pro and Vivo iQOO 15 Ultra - Which is better?

Xiaomi Poco X3 Pro vs Vivo iQOO 15 Ultra

55 out 100
Xiaomi Poco X3 Pro
VS
94 out 100
Vivo iQOO 15 Ultra
Xiaomi Poco X3 Pro
Vivo iQOO 15 Ultra

Compared 2 smartphones : Xiaomi Poco X3 Pro Manufactured in April, 2021, with display 6.67 with chipsetQualcomm Snapdragon 860, vs Vivo iQOO 15 Ultra, Manufactured in February, 2026with 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 Poco X3 Pro
  • Lighter design: 215g vs 227g
Reasons to choose Vivo iQOO 15 Ultra
  • Larger display: 6.85in
  • Higher pixel density: 508ppi
  • Higher refresh rate: 144Hz
  • Higher battery capacity: 7400mAh vs 5160mAh
  • Newer Bluetooth version: 5.4 vs 5
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Supports Dolby Atmos
  • Built-in eSIM
  • Includes charger

Versions

Available versions and configurations
Memory Options - 6/125 GB
- 6/128 GB
- 6/256 GB
- 8/128 GB
- 8/256 GB		 - 16/256 GB
- 16/512 GB
- 16/1024 GB
- 24/1024 GB

Review

Key Specs Xiaomi Poco X3 Pro and Vivo iQOO 15 Ultra
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 Poco X3 Pro
vs
Vivo iQOO 15 Ultra

Display

Display quality comparison
Type IPS LCD AMOLED
Size 6.67 in 6.85 in
Resolution 1080x2400 pixels 1440x3168 pixels
Aspect ratio 20:9 20:9
Pixel density 395 ppi 508 ppi
Refresh rate 120 Hz 144 Hz
Adaptive refresh rate No Yes (1-120 Hz)
Max brightness 450 nits 2600 nits
HDR support Yes HDR10 Yes, HDR10+
Touch Sampling Rate 240 Hz n/a
Screen-to-body ratio 84.6 % 90.1 %
Features n/a - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Xiaomi Poco X3 Pro
530 nits
Vivo iQOO 15 Ultra
n/a
sRGB gamut95.1 %n/a
PWM (Flicker)2404 Hzn/a
Response time37.4 msn/a
Contrast995:1n/a
Sources: NotebookCheck [Xiaomi Poco X3 Pro]

Design & Build

Design and ergonomics comparison
Height 165.3 mm (6.51 in) 163.7 mm (6.44 in)
Width 76.8 mm (3.02 in) 76.8 mm (3.02 in)
Thickness 9.4 mm (0.37 in) 8.7 mm (0.34 in)
Weight 215 g (7.58 oz) 227 g (8.01 oz)
Water resistance IP53 IP69
Cooling system Vapor chamber Active fan
Back panel Plastic Glass
Frame Plastic Metal
Colors - Black
- Gold
- Blue		 - Black
- Silver
Fingerprint sensor Yes In-Button Yes, In-Display
Screen-to-body ratio
Xiaomi Poco X3 Pro
84.6 %
Vivo iQOO 15 Ultra
90.1 %

Performance

Testing Xiaomi Poco X3 Pro and Vivo iQOO 15 Ultra In benchmarks
Processor
Chipset Qualcomm Snapdragon 860 Qualcomm Snapdragon 8 Elite Gen 5
Max Frequency 2960 MHz 4600 MHz
CPU Cores 8 (1 + 3 + 4) 8 (2 + 6)
Architecture - 4/1.8 (Cortex-A55 (Kryo 485 Silver))
- 3/2.42 (Cortex-A76 (Kryo 485 Gold))
- 1/2.96 (Cortex-A76 (Kryo 485 Prime))		 - 6/3.63 (Oryon Gen 3 Performance)
- 2/4.61 (Oryon Gen 3 Prime)
Process TSMC TSMC
Transistor Size 7 nm 3 nm
Neural Processor Hexagon 690 Hexagon
Graphics Adreno 640 Adreno 840
GPU Cores 768 1536
GPU Frequency 675 MHz 1200 MHz
FLOPS 1036.8 GFLOPS 3686.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi Poco X3 Pro
973
Vivo iQOO 15 Ultra
3615
Geekbench 6 (Multi-Core)
Xiaomi Poco X3 Pro
2589
Vivo iQOO 15 Ultra
11366
Geekbench 6 (Single-Core)9733615
Geekbench 6 (Multi-Core)258911366
Sources: Geekbench v6 [Vivo iQOO 15 Ultra]
AnTuTu 10
AnTuTu 10
Xiaomi Poco X3 Pro
642297
Vivo iQOO 15 Ultra
4518403
CPU1817091322001
GPU1557431594848
Memory126967593523
UX1778781008031
NanoReview Score6422974518403
3DMark Wild Life
3DMark Wild Life
Xiaomi Poco X3 Pro
3456
Vivo iQOO 15 Ultra
n/a
Max Surface Temp.44.1 °Cn/a
Stability97 %n/a
Graphics Test20 fpsn/a
Graphics Score3456n/a
Sources: 3DMark [Xiaomi Poco X3 Pro]
PCMark 3.0
PCMark 3.0
Xiaomi Poco X3 Pro
10579
Vivo iQOO 15 Ultra
n/a
Writing score13393n/a
Web score8062n/a
Video editing6035n/a
Data manipulation8470n/a
NanoReview Score10579n/a

Memory

RAM
RAM Size - 6 GB
- 8 GB		 16 GB
Memory Type LPDDR4X LPDDR5X
Memory Frequency 2133 MHz n/a
Channels 2 4
Storage
Storage Capacity- 128 GB
- 256 GB		256 GB
Storage TypeUFS 3.1UFS 4.1
Memory CardMicroSDNo

Software

OS Android 11 (Upgradeable to Android 13) Android 16
OS Size 13 GB n/a
UI Skin MIUI 14 OriginOS 6

Battery

Volume 5160 mAh 7400 mAh
Max Charging Power 33 W 100 W
Battery Type Li-Po Silicon Carbon (Si/C)
Removable No No
Wireless Charging No Yes (40 W)
Reverse Charging No Yes, (Wireless)
Fast Charging Yes (55% in 30 min) Yes
Full Charge Time 1:15 h n/a
Battery Life Test
Battery Life
Xiaomi Poco X3 Pro
22:40
Vivo iQOO 15 Ultra
n/a
Web Browsing08:43 hn/a
Video Playback12:45 hn/a
Games05:20 hn/a
Standby Mode117 hn/a

Main camera

Matrix 48 MP 50 MP
Photo resolution 8000x6000 pixels 8192x6144 pixels
Zoom Digital Optical, 3x
Flash Dual LED Dual LED
Stabilization Digital Optical
8K Recording No Yes (Up to 30 fps)
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 960 fps (1080p) 240 fps (1080p)
Wide-angle lens 119 ° 107 °
Lenses count Standard: 48 MP
Ultra-wide: 8 MP
Macro: 2 MP
Depth: 2 MP		 Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix48 MP50 MP
Aperturef/1.8f/1.9
Focal length26 mm23 mm
SensorSony IMX582Sony IMX921
Sensor size1/2.01/1.56 (0.64)
Pixel size0.8 μm1 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalOptical
Telephoto
Matrixn/a50 MP
Aperturen/af/2.7
Sensorn/aSony IMX882
Sensor sizen/a1/1.95 (0.51)
Pixel sizen/a0.8 μm
Stabilizationn/aOptical
Ultra-wide lens
Matrix8 MP50 MP
Aperturef/2.2f/2.1
Focal lengthn/a15 mm
SensorOmnivision OV8856n/a
Sensor size1/41/2.76 (0.36)
Pixel size1.12 μm0.64 μm
StabilizationDigitalDigital

Front camera

Matrix 20 MP 32 MP
Photo resolution 5480x3648 pixels n/a
Aperture f/2.2 f/2.2
Focal length 25 mm 21 mm
Sensor CMOS CMOS
Sensor size 1/3.4 1/3.1 (0.32)
Pixel size 0.8 μm 0.7 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 2160p (4K) at 60 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be)
Wi-Fi features - Dual Band
- 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 5 5.4
Bluetooth features LE, A2DP LE
USB type USB Type-C USB Type-C
USB version 2 3.2
USB features - Charging
- USB Storage Mode
- USB-Host mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort n/a Yes
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - 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 *NoYes
Hybrid SlotYesNo
2G BandsGSM B2/3/5/8n/a
3G BandsUMTC B1/2/4/5/8n/a
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B20/B28/B32/B38/B40/B41)n/a
LTE category20n/a
5G SupportNoYes

Sound

Speakers Stereo n/a
3.5 mm Jack Yes No
FM Radio Yes No
Dolby Atmos No Yes
Speaker Test
Max Volume
Xiaomi Poco X3 Pro
88.3 dB
Vivo iQOO 15 Ultra
n/a

Other

Class Mid-range Flagship
Announced March, 2021 yr February, 2026 yr
Release Date April, 2021 yr February, 2026 yr
Launch Price ($) 250 n/a
MSRP ($) n/a 820
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included n/a Yes, 100 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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

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