Home Phone comparison Itel itel S25 Ultra and Vivo iQOO 15 Ultra - Which is better?

Itel itel S25 Ultra vs Vivo iQOO 15 Ultra

56 out 100
Itel itel S25 Ultra
VS
94 out 100
Vivo iQOO 15 Ultra
Itel itel S25 Ultra
Vivo iQOO 15 Ultra

Compared 2 smartphones : Itel itel S25 Ultra Manufactured in November, 2024, with display 6.78 with chipsetUnisoc T620, 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 Itel itel S25 Ultra
  • Lighter design: 163g 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 5000mAh
  • Newer Bluetooth version: 5.4 vs 5
  • Supports newer USB: 3.2 vs 2
  • Supports DisplayPort
  • Supports Dolby Atmos
  • Built-in eSIM

Versions

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

Review

Key Specs Itel itel S25 Ultra 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
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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:
Itel itel S25 Ultra
vs
Vivo iQOO 15 Ultra

Display

Display quality comparison
Type AMOLED AMOLED
Size 6.78 in 6.85 in
Resolution 1080x2436 pixels 1440x3168 pixels
Aspect ratio 20.5:9 20:9
Pixel density 393 ppi 508 ppi
Refresh rate 120 Hz 144 Hz
Adaptive refresh rate Yes Yes (1-120 Hz)
Max brightness 1400 nits 2600 nits
HDR support No Yes, HDR10+
Screen-to-body ratio 89.1 % 90.1 %
Features - DCI-P3
- Always-On Display		 - DCI-P3
- Always-On Display
- DC dimming

Design & Build

Design and ergonomics comparison
Height 164.2 mm (6.46 in) 163.7 mm (6.44 in)
Width 74.6 mm (2.94 in) 76.8 mm (3.02 in)
Thickness 6.9 mm (0.27 in) 8.7 mm (0.34 in)
Weight 163 g (5.75 oz) 227 g (8.01 oz)
Water resistance IP64 IP69
Cooling system n/a Active fan
Back panel Plastic Glass
Frame Plastic Metal
Colors - Black
- Gray
- Purple		 - Black
- Silver
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Itel itel S25 Ultra
89.1 %
Vivo iQOO 15 Ultra
90.1 %

Performance

Testing Itel itel S25 Ultra and Vivo iQOO 15 Ultra In benchmarks
Processor
Chipset Unisoc T620 Qualcomm Snapdragon 8 Elite Gen 5
Max Frequency 2200 MHz 4600 MHz
CPU Cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6/1.8 (Cortex-A55)
- 2/2.2 (Cortex-A75)		 - 6/3.63 (Oryon Gen 3 Performance)
- 2/4.61 (Oryon Gen 3 Prime)
Process TSMC TSMC
Transistor Size 12 nm 3 nm
Neural Processor No Hexagon
Graphics Mali-G57 MP1 Adreno 840
GPU Cores 32 1536
GPU Frequency 850 MHz 1200 MHz
FLOPS 54.4 GFLOPS 3686.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Itel itel S25 Ultra
497
Vivo iQOO 15 Ultra
3615
Geekbench 6 (Multi-Core)
Itel itel S25 Ultra
1541
Vivo iQOO 15 Ultra
11366
Geekbench 6 (Single-Core)4973615
Geekbench 6 (Multi-Core)154111366
Geekbench Compute (GPU)599n/a
Sources: Geekbench v6 [Itel itel S25 Ultra], [Vivo iQOO 15 Ultra]
AnTuTu 10
AnTuTu 10
Itel itel S25 Ultra
332915
Vivo iQOO 15 Ultra
4518403
CPU1010471322001
GPU302811594848
Memory116778593523
UX848091008031
NanoReview Score3329154518403

Memory

RAM
RAM Size 8 GB 16 GB
Memory Type LPDDR4X LPDDR5X
Memory Frequency 2133 MHz n/a
Channels 2 4
Storage
Storage Capacity- 128 GB
- 256 GB
- 512 GB		256 GB
Storage TypeUFS 2.2UFS 4.1
Memory Cardn/aNo

Software

OS Android 14 Android 16
UI Skin itel OS 14.5 OriginOS 6

Battery

Volume 5000 mAh 7400 mAh
Max Charging Power 18 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 Yes

Main camera

Matrix 50 MP 50 MP
Photo resolution n/a 8192x6144 pixels
Zoom Digital Optical, 3x
Flash LED Dual LED
Stabilization Digital Optical
8K Recording No Yes (Up to 30 fps)
4K Recording No Yes (Up to 60 fps)
1080p Recording Yes (Up to 30 fps) Yes (Up to 60 fps)
Slow Motion n/a 240 fps (1080p)
Wide-angle lens n/a 107 °
Lenses count Standard: 50 MP
Macro
Depth		 Standard: 50 MP
Telephoto: 50 MP
Ultra-wide: 50 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix50 MP50 MP
Aperturef/1.6f/1.9
Focal lengthn/a23 mm
Sensorn/aSony IMX921
Sensor sizen/a1/1.56 (0.64)
Pixel sizen/a1 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
Matrixn/a50 MP
Aperturen/af/2.1
Focal lengthn/a15 mm
Sensor sizen/a1/2.76 (0.36)
Pixel sizen/a0.64 μm
Stabilizationn/aDigital

Front camera

Matrix 32 MP 32 MP
Aperture f/2.2 f/2.2
Focal length 22 mm 21 mm
Sensor n/a CMOS
Sensor size n/a 1/3.1 (0.32)
Pixel size n/a 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 LE
USB type USB Type-C USB Type-C
USB version 2 3.2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort No 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 SlotNoNo
5G SupportNoYes

Sound

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

Other

Class Budget Flagship
Announced November, 2024 yr February, 2026 yr
Release Date November, 2024 yr February, 2026 yr
Launch Price ($) 140 n/a
MSRP ($) 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 Yes 18 W 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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