Home Phone comparison Samsung Galaxy S23 Ultra and Vivo iQOO 15 - Which is better?

Samsung Galaxy S23 Ultra vs Vivo iQOO 15

81 out 100
Samsung Galaxy S23 Ultra
VS
94 out 100
Vivo iQOO 15
Samsung Galaxy S23 Ultra
Vivo iQOO 15

Compared 2 smartphones : Samsung Galaxy S23 Ultra Manufactured in February, 2023, with display 6.8 with chipsetSnapdragon 8 Gen 2 Mobile Platform for Galaxy, vs Vivo iQOO 15, Manufactured in October, 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 Samsung Galaxy S23 Ultra
  • Supports Dolby Atmos
  • Built-in eSIM
Reasons to choose Vivo iQOO 15
  • Larger display: 6.85in
  • Higher pixel density: 508ppi
  • Higher refresh rate: 144Hz
  • Lighter design: 220g vs 233g
  • Higher battery capacity: 7000mAh vs 5000mAh
  • Newer Bluetooth version: 6.0 vs 5.3
  • Infrared port
  • Includes charger

Versions

Available versions and configurations
Memory Options - 8/256 GB
- 12/256 GB
- 12/512 GB
- 12/1024 GB		 - 12/256 GB
- 12/512 GB
- 16/256 GB
- 16/512 GB
- 16/1024 GB

Review

Key Specs Samsung Galaxy S23 Ultra and Vivo iQOO 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:
Galaxy S23 Ultra
vs
Vivo iQOO 15

Display

Display quality comparison
Type Dynamic AMOLED AMOLED
Size 6.8 in 6.85 in
Resolution 1440x3088 pixels 1440x3168 pixels
Aspect ratio 19.3:9 20:9
Pixel density 500 ppi 508 ppi
Refresh rate 120 Hz 144 Hz
Adaptive refresh rate Yes (1-120 Hz) Yes (1-120 Hz)
Max brightness 850 nits 2600 nits
HDR support Yes HDR10+ Yes, HDR10+
Touch Sampling Rate 240 Hz n/a
Screen-to-body ratio 89.5 % 90.2 %
Features - DCI-P3
- Always-On Display		 - DCI-P3
- Always-On Display
- DC dimming
Display test
Peak brightness (auto)
Samsung Galaxy S23 Ultra
1269 nits
Vivo iQOO 15
n/a
sRGB gamut96.9 %n/a
PWM (Flicker)240 Hzn/a
Response time2 msn/a
Contrast∞ Infiniten/a
Sources: NotebookCheck [Samsung Galaxy S23 Ultra]

Design & Build

Design and ergonomics comparison
Height 163.4 mm (6.43 in) 163.65 mm (6.44 in)
Width 78.1 mm (3.07 in) 76.8 mm (3.02 in)
Thickness 8.9 mm (0.35 in) 8.1 mm (0.32 in)
Weight 233 g (8.22 oz) 220 g (7.76 oz)
Water resistance IP68 IP69
Cooling system Vapor chamber Vapor chamber
Back panel Glass n/a
Frame Metal Metal
Colors - White
- Black
- Gray
- Blue
- Green
- Red
- Purple		 - White
- Black
- Blue
Fingerprint sensor Yes In-Display Yes, In-Display
Screen-to-body ratio
Samsung Galaxy S23 Ultra
89.5 %
Vivo iQOO 15
90.2 %

Performance

Testing Samsung Galaxy S23 Ultra and Vivo iQOO 15 In benchmarks
Processor
Chipset Snapdragon 8 Gen 2 Mobile Platform for Galaxy Qualcomm Snapdragon 8 Elite Gen 5
Max Frequency 3360 MHz 4600 MHz
CPU Cores 8 (1 + 2 + 2 + 3) 8 (2 + 6)
Architecture - 3/2 (Cortex-A510)
- 2/2.8 (Cortex-A710)
- 2/2.8 (Cortex-A715)
- 1/3.2 (Cortex-X3)		 6/3.63 ()
Process TSMC TSMC
Transistor Size 4 nm 3 nm
Neural Processor Hexagon Hexagon
Graphics Adreno 740 Adreno 840
GPU Cores 1536 1536
GPU Frequency 719 MHz 1200 MHz
FLOPS 2089 GFLOPS 3686.4 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S23 Ultra
1976
Vivo iQOO 15
3641
Geekbench 6 (Multi-Core)
Samsung Galaxy S23 Ultra
5221
Vivo iQOO 15
10982
Geekbench 6 (Single-Core)19763641
Geekbench 6 (Multi-Core)522110982
Geekbench Compute (GPU)n/a27923
Sources: Geekbench v6 [Vivo iQOO 15]
AnTuTu 10
AnTuTu 10
Samsung Galaxy S23 Ultra
1541246
Vivo iQOO 15
4009400
CPU3710841102463
GPU6007321429688
Memory299004516447
UX270462960802
NanoReview Score15412464009400
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S23 Ultra
12160
Vivo iQOO 15
n/a
Max Surface Temp.34.8 °Cn/a
Stability64 %n/a
Graphics Test72 fpsn/a
Graphics Score12160n/a
Sources: 3DMark [Samsung Galaxy S23 Ultra]
PCMark 3.0
PCMark 3.0
Samsung Galaxy S23 Ultra
16130
Vivo iQOO 15
n/a
Writing score19799n/a
Web score16101n/a
Video editing7815n/a
Data manipulation13142n/a
NanoReview Score16130n/a

Memory

RAM
RAM Size - 8 GB
- 12 GB		 12 GB
Memory Type LPDDR5X LPDDR5X
Memory Frequency 4200 MHz 5300 MHz
Channels 4 4
Storage
Storage Capacity- 256 GB
- 512 GB
- 1024 GB		256 GB
Storage TypeUFS 4.0UFS 4.1
Memory CardNoNo

Software

OS Android 13 (Upgradeable to Android 14) Android 16
OS Size 39.9 GB n/a
UI Skin One UI 6.1 OriginOS 6

Battery

Volume 5000 mAh 7000 mAh
Max Charging Power 45 W 100 W
Battery Type Li-ion Silicon Carbon (Si/C)
Removable No No
Wireless Charging Yes (15 W) Yes (40 W)
Reverse Charging Yes (Wireless) No
Fast Charging Yes (68% in 30 min) Yes
Full Charge Time 0:59 h n/a
Battery Life Test
Battery Life
Samsung Galaxy S23 Ultra
26:01
Vivo iQOO 15
n/a
Web Browsing09:57 hn/a
Video Playback15:38 hn/a
Games06:22 hn/a
Standby Mode130 hn/a

Main camera

Matrix 200 MP 50 MP
Photo resolution 16320x12240 pixels 8192x6144 pixels
Zoom Optical, 10x Optical, 3x
Flash 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 60 fps)
1080p Recording Yes (Up to 120 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (1080p) 240 fps (1080p)
Wide-angle lens 120 ° n/a
Lenses count Standard: 200 MP
Telephoto: 10 MP
Telephoto: 10 MP
Ultra-wide: 12 MP		 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
Matrix200 MP50 MP
Aperturef/1.7f/1.9
Focal length23 mm23 mm
SensorSamsung ISOCELL HP2n/a
Sensor size1/1.31/1.56
Pixel size0.64 μm1 μm
AutofocusLaser autofocusPhase autofocus
StabilizationOpticalOptical
Telephoto
Matrix10 MP50 MP
Aperturef/4.9f/2.7
Focal length230 mmn/a
SensorSony IMX754n/a
Sensor size1/3.521/1.95
Pixel size1.12 μm0.8 μm
StabilizationOpticalOptical
Ultra-wide lens
Matrix12 MP50 MP
Aperturef/2.2f/2.1
Focal length13 mm15 mm
SensorSony IMX564n/a
Sensor size1/2.551/2.76
Pixel size1.4 μm0.64 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy S23 Ultra
139
Vivo iQOO 15
n/a
Video quality
Samsung Galaxy S23 Ultra
137
Vivo iQOO 15
n/a
Overall camera score
Samsung Galaxy S23 Ultra
140
Vivo iQOO 15
n/a
Bokeh70n/a
Preview73n/a
Zoom141n/a
Sources: DxOMark [Samsung Galaxy S23 Ultra]

Front camera

Matrix 12 MP 32 MP
Photo resolution 4000x3000 pixels n/a
Aperture f/2.2 f/2.2
Focal length 26 mm 21 mm
Sensor Samsung S5K3LU CMOS
Sensor size 1/3.24 n/a
Pixel size 1.12 μm n/a
Autofocus Phase autofocus No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 2160p (4K) at 60 fps
TOF 3D sensor No No
Selfie camera DxOMark results
Photo quality
Samsung Galaxy S23 Ultra
139
Vivo iQOO 15
n/a
Video quality
Samsung Galaxy S23 Ultra
145
Vivo iQOO 15
n/a

Connectivity

Wi-Fi version Wi-Fi 6E (802.11 a/b/g/n/ac/ax) 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 5.3 6.0
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 DP 1.2 Yes
GPS - GPS
- GLONASS
- Beidou
- Galileo
- QZSS		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Yes
Infrared Port No Yes
Connectivity
SIM Count*12
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G Bandsn/aGSM 850/900/1800/1900MHz
3G Bandsn/aWCDMA B1/B2/B4/B5/B6/B8/B19
LTE Bands*n/aLTE (B1/B2/B3/B4/B5/B7/B8/B18/B19/B20/B26/B28/B38/B40/B41/B42/B66)
LTE category20n/a
5G SupportYesYes

Sound

Speakers Stereo n/a
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes n/a
Speaker Test
Max Volume
Samsung Galaxy S23 Ultra
91.8 dB
Vivo iQOO 15
n/a

Other

Class Flagship Flagship
Announced February, 2023 yr October, 2025 yr
Release Date February, 2023 yr October, 2025 yr
Launch Price ($) 1199 n/a
MSRP ($) n/a 590
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included No Yes, 100 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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

Survey

Which smartphone would you pick?
1 (100%)
0 (0%)
Total Votes: 1

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