Home Phone comparison Vivo iQOO 15 and Xiaomi 17 Ultra - Which is better?

Vivo iQOO 15 vs Xiaomi 17 Ultra

94 out 100
Vivo iQOO 15
VS
95 out 100
Xiaomi 17 Ultra
Vivo iQOO 15
Xiaomi 17 Ultra

Compared 2 smartphones : Vivo iQOO 15 Manufactured in October, 2025, with display 6.85 with chipsetQualcomm Snapdragon 8 Elite Gen 5, vs Xiaomi 17 Ultra, Manufactured in December, 2025with 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 Vivo iQOO 15
  • Higher pixel density: 508ppi
  • Higher refresh rate: 144Hz
  • Lighter design: 220g vs 224g
  • Higher battery capacity: 7000mAh vs 6800mAh
  • Newer Bluetooth version: 6.0 vs 5.4
Reasons to choose Xiaomi 17 Ultra
  • Larger display: 6.9in
  • Supports Dolby Atmos
  • Built-in eSIM

Versions

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

Review

Key Specs Vivo iQOO 15 and Xiaomi 17 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
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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:
Vivo iQOO 15
vs
Xiaomi 17 Ultra

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.85 in 6.9 in
Resolution 1440x3168 pixels 1200x2608 pixels
Aspect ratio 20:9 19.5:9
Pixel density 508 ppi 416 ppi
Refresh rate 144 Hz 120 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (1-120 Hz)
Max brightness 2600 nits 1200 nits
HDR support Yes, HDR10+ Yes, Dolby Vision
Screen-to-body ratio 90.2 % 92.4 %
Features - DCI-P3
- Always-On Display
- DC dimming		 - DCI-P3
- Always-On Display
- DC dimming

Design & Build

Design and ergonomics comparison
Height 163.65 mm (6.44 in) 162.9 mm (6.41 in)
Width 76.8 mm (3.02 in) 77.6 mm (3.06 in)
Thickness 8.1 mm (0.32 in) 8.29 mm (0.33 in)
Weight 220 g (7.76 oz) 224 g (7.9 oz)
Water resistance IP69 IP69
Cooling system Vapor chamber Vapor chamber
Back panel n/a Eco Leather
Frame Metal Metal
Colors - White
- Black
- Blue		 - White
- Black
- Green
- Purple
Fingerprint sensor Yes, In-Display Yes, In-Display
Screen-to-body ratio
Vivo iQOO 15
90.2 %
Xiaomi 17 Ultra
92.4 %

Performance

Testing Vivo iQOO 15 and Xiaomi 17 Ultra In benchmarks
Processor
Chipset Qualcomm Snapdragon 8 Elite Gen 5 Qualcomm Snapdragon 8 Elite Gen 5
Max Frequency 4600 MHz 4610 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture 6/3.63 () 6/3.63 ()
Process TSMC TSMC
Transistor Size 3 nm 3 nm
Neural Processor Hexagon Hexagon
Graphics Adreno 840 Adreno 840
GPU Cores 1536 1536
GPU Frequency 1200 MHz 1200 MHz
FLOPS 3686.4 GFLOPS 3686.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Vivo iQOO 15
3641
Xiaomi 17 Ultra
3510
Geekbench 6 (Multi-Core)
Vivo iQOO 15
10982
Xiaomi 17 Ultra
10993
Geekbench 6 (Single-Core)36413510
Geekbench 6 (Multi-Core)1098210993
Geekbench Compute (GPU)27923n/a
Sources: Geekbench v6 [Vivo iQOO 15]
AnTuTu 10
AnTuTu 10
Vivo iQOO 15
4009400
Xiaomi 17 Ultra
3963774
CPU11024631198653
GPU14296881458267
Memory516447501472
UX960802805382
NanoReview Score40094003963774

Memory

RAM
RAM Size 12 GB 12 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency 5300 MHz 5300 MHz
Channels 4 4
Storage
Storage Capacity256 GB512 GB
Storage TypeUFS 4.1UFS 4.1
Memory CardNoNo

Software

OS Android 16 Android 16
UI Skin OriginOS 6 HyperOS 3

Battery

Volume 7000 mAh 6800 mAh
Max Charging Power 100 W 90 W
Battery Type Silicon Carbon (Si/C) Silicon Carbon (Si/C)
Removable No No
Wireless Charging Yes (40 W) Yes (50 W)
Reverse Charging No Yes, (Wireless)
Fast Charging Yes Yes

Main camera

Matrix 50 MP 50 MP
Photo resolution 8192x6144 pixels 8192x6144 pixels
Zoom Optical, 3x Optical, 4.3x
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 60 fps) Yes (Up to 120 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 120 fps)
Slow Motion 240 fps (1080p) 1920 fps (720p)
Wide-angle lens n/a 115 °
Lenses count Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 50 MP		 Standard: 50 MP
Telephoto: 200 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP50 MP
Aperturef/1.9f/1.7
Focal length23 mm23 mm
Sensor size1/1.561/1 (1)
Pixel size1 μm1.6 μm
AutofocusPhase autofocusLaser autofocus
StabilizationOpticalOptical
Telephoto
Matrix50 MP200 MP
Aperturef/2.7f/2.4 - 3.0
Focal lengthn/a100 mm
Sensor size1/1.951/1.4 (0.71)
Pixel size0.8 μm0.56 μm
StabilizationOpticalOptical
Ultra-wide lens
Matrix50 MP50 MP
Aperturef/2.1f/2.2
Focal length15 mm14 mm
Sensorn/aOmniVision OV50M40
Sensor size1/2.761/2.88 (0.35)
Pixel size0.64 μm0.61 μm
StabilizationDigitalDigital

Front camera

Matrix 32 MP 50 MP
Photo resolution n/a 8192x6144 pixels
Aperture f/2.2 f/2.2
Focal length 21 mm n/a
Sensor CMOS CMOS
Sensor size n/a 1/2.88 (0.35)
Pixel size n/a 0.61 μm
Autofocus No Phase autofocus
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		 - 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 *NoYes
Hybrid SlotNoNo
2G BandsGSM 850/900/1800/1900MHzGSM B2 / B3 / B5 / B8
3G BandsWCDMA B1/B2/B4/B5/B6/B8/B19WCDMA B1 / B2 / B4 / B5 / B6 / B8 / B19
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B18/B19/B20/B26/B28/B38/B40/B41/B42/B66)LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B66/B71)
5G SupportYesYes

Sound

3.5 mm Jack No No
FM Radio No No
Dolby Atmos n/a Yes

Other

Class Flagship Flagship
Announced October, 2025 yr December, 2025 yr
Release Date October, 2025 yr December, 2025 yr
MSRP ($) 590 n/a
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes, 100 W Yes, 100 W
* 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?
3 (60%)
2 (40%)
Total Votes: 5

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