Home Phone comparison Samsung Galaxy S21 Ultra and Vivo iQOO Z10 - Which is better?

Samsung Galaxy S21 Ultra vs Vivo iQOO Z10

67 out 100
Samsung Galaxy S21 Ultra
VS
69 out 100
Vivo iQOO Z10
Samsung Galaxy S21 Ultra
Vivo iQOO Z10

Compared 2 smartphones : Samsung Galaxy S21 Ultra Manufactured in February, 2021, with display 6.8 with chipsetSamsung Exynos 2100, vs Vivo iQOO Z10, Manufactured in April, 2025 with chipsetQualcomm Snapdragon 7s Gen 3. 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 S21 Ultra
  • Larger display: 6.8in
  • Higher pixel density: 515ppi
  • Supports newer USB: 3.2 vs 2
  • Supports Dolby Atmos
  • Built-in eSIM
Reasons to choose Vivo iQOO Z10
  • Lighter design: 199g vs 227g
  • Higher battery capacity: 7300mAh vs 5000mAh
  • Infrared port
  • Includes charger

Versions

Available versions and configurations
Memory Options - 12/128 GB
- 12/256 GB
- 12/512 GB
- 16/256 GB
- 16/512 GB		 - 8/128 GB
- 8/256 GB
- 12/256 GB

Review

Key Specs Samsung Galaxy S21 Ultra and Vivo iQOO Z10
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:
Galaxy S21 Ultra
vs
Vivo iQOO Z10

Display

Display quality comparison
Type Dynamic AMOLED AMOLED
Size 6.8 in 6.77 in
Resolution 1440x3200 pixels 1080x2392 pixels
Aspect ratio 20:9 20:9
Pixel density 515 ppi 388 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (10-120 Hz) Yes (60-120 Hz)
Max brightness 1500 nits n/a
HDR support Yes HDR10+ Yes HDR10+
Touch Sampling Rate n/a 300 Hz
Screen-to-body ratio 89.5 % 88.7 %
Features - DCI-P3
- Always-On Display		 - DCI-P3
- Always-On Display
Display test
Peak brightness (auto)
Samsung Galaxy S21 Ultra
1019 nits
Vivo iQOO Z10
n/a
Sources: NotebookCheck [Samsung Galaxy S21 Ultra]

Design & Build

Design and ergonomics comparison
Height 165.1 mm (6.5 in) 163.4 mm (6.43 in)
Width 75.6 mm (2.98 in) 76.4 mm (3.01 in)
Thickness 8.9 mm (0.35 in) 7.93 mm (0.31 in)
Weight 227 g (8.01 oz) 199 g (7.02 oz)
Water resistance IP68 Yes
Back panel Glass n/a
Frame Metal Plastic
Colors - Black
- Silver
- Gray
- Blue		 - Black
- Silver
Fingerprint sensor Yes In-Display Yes In-Display
Screen-to-body ratio
Samsung Galaxy S21 Ultra
89.5 %
Vivo iQOO Z10
88.7 %

Performance

Testing Samsung Galaxy S21 Ultra and Vivo iQOO Z10 In benchmarks
Processor
Chipset Samsung Exynos 2100 Qualcomm Snapdragon 7s Gen 3
Max Frequency 2900 MHz 2500 MHz
CPU Cores 8 (1 + 3 + 4) 8 (1 + 3 + 4)
Architecture - 4/2.2 (Cortex-A55)
- 3/2.81 (Cortex-A78)
- 1/2.91 (Cortex-X1)		 - 4/1.8 (Kryo Silver (Cortex-A520))
- 3/2.4 (Kryo Gold (Cortex-A720))
- 1/2.5 (Kryo Prime (Cortex-A720))
Process Samsung TSMC
Transistor Size 5 nm 4 nm
Neural Processor Yes Yes
Graphics Mali-G78 MP14 Adreno 810
GPU Cores 896 256
GPU Frequency 854 MHz 1050 MHz
FLOPS 1530.4 GFLOPS 537.6 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S21 Ultra
1449
Vivo iQOO Z10
1159
Geekbench 6 (Multi-Core)
Samsung Galaxy S21 Ultra
3892
Vivo iQOO Z10
3291
Geekbench 6 (Single-Core)14491159
Geekbench 6 (Multi-Core)38923291
Sources: Geekbench v6 [Vivo iQOO Z10]
AnTuTu 10
AnTuTu 10
Samsung Galaxy S21 Ultra
843008
Vivo iQOO Z10
804936
CPU232358273371
GPU256356205536
Memory163007142285
UX191217183744
NanoReview Score843008804936
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S21 Ultra
5221
Vivo iQOO Z10
n/a
Max Surface Temp.40.8 °Cn/a
Stability69 %n/a
Graphics Test31 fpsn/a
Graphics Score5221n/a
Sources: 3DMark [Samsung Galaxy S21 Ultra]

Memory

RAM
RAM Size - 12 GB
- 16 GB		 - 8 GB
- 12 GB
Memory Type LPDDR5 LPDDR5
Memory Frequency 2750 MHz 4800 MHz
Channels 2 4
Storage
Storage Capacity- 128 GB
- 256 GB
- 512 GB		- 128 GB
- 256 GB
Storage TypeUFS 3.1UFS 3.1
Memory CardNon/a

Software

OS Android 11 (Upgradeable to Android 14) Android 15
OS Size 26.4 GB n/a
UI Skin One UI 6 FuntouchOS 15

Battery

Volume 5000 mAh 7300 mAh
Max Charging Power 25 W 90 W
Battery Type Li-ion Silicon Carbon
Removable No No
Wireless Charging Yes (15 W) No
Reverse Charging Yes (Wireless) Yes
Fast Charging Yes (54% in 30 min) Yes
Full Charge Time 1:11 h n/a
Battery Life Test
Battery Life
Samsung Galaxy S21 Ultra
22:05
Vivo iQOO Z10
n/a
Web Browsing07:58 h34:00 h
Video Playback13:59 h29:00 h
Games05:14 h9:00 h
Standby Mode111 hn/a

Main camera

Matrix 108 MP 50 MP
Photo resolution 12000x9000 pixels 8192x6144 pixels
Zoom Optical, 10x Digital
Flash Dual LED LED
Stabilization Optical Optical
8K Recording Up to 24FPS n/a
4K Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 60 fps)
Slow Motion 960 fps (720p) n/a
Wide-angle lens 120 ° n/a
Lenses count Standard: 108 MP
Telephoto: 10 MP
Telephoto: 10 MP
Ultra-wide: 12 MP		 Standard: 50 MP
Depth: 2 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
Main lens
Matrix108 MP50 MP
Aperturef/1.8f/1.8
Focal length26 mmn/a
SensorSamsung S5KHM3Sony IMX882
Sensor size1/1.331/1.95
Pixel size0.8 μm0.8 μm
AutofocusLaser autofocusPhase autofocus
StabilizationOpticalOptical
Telephoto
Matrix10 MPn/a
Aperturef/4.9n/a
Focal length240 mmn/a
SensorSamsung S5K3J1n/a
Sensor size1/2.65n/a
Pixel size1.22 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix12 MPn/a
Aperturef/2.2n/a
Focal length13 mmn/a
SensorSony IMX563n/a
Sensor size1/2.55n/a
Pixel size1.4 μmn/a
StabilizationDigitaln/a
Main camera DxOMark results
Photo quality
Samsung Galaxy S21 Ultra
121
Vivo iQOO Z10
n/a
Video quality
Samsung Galaxy S21 Ultra
100
Vivo iQOO Z10
n/a
Overall camera score
Samsung Galaxy S21 Ultra
115
Vivo iQOO Z10
n/a
Bokeh70n/a
Preview67n/a
Zoom106n/a
Sources: DxOMark [Samsung Galaxy S21 Ultra]

Front camera

Matrix 40 MP 8 MP
Photo resolution 7864x5200 pixels n/a
Aperture f/2.2 f/2.0
Focal length 26 mm n/a
Sensor Samsung S5KGH1 n/a
Sensor size 1/2.65 n/a
Pixel size 0.7 μm n/a
Autofocus Phase autofocus No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No
Selfie camera DxOMark results
Photo quality
Samsung Galaxy S21 Ultra
133
Vivo iQOO Z10
n/a
Video quality
Samsung Galaxy S21 Ultra
140
Vivo iQOO Z10
n/a

Connectivity

Wi-Fi version Wi-Fi 6E (802.11 a/b/g/n/ac/ax) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5.2 5.2
Bluetooth features LE, A2DP LE
USB type USB Type-C USB Type-C
USB version 3.2 2
USB features - Charging
- USB Storage Mode
- USB-Host mode
- OTG		 - Charging
- USB Storage Mode
- OTG
DisplayPort n/a No
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
- QZSS
NFC* Yes Yes
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G BandsGSM 850, 900, 1800, 1900 MHzGSM 850/900/1800Mhz
3G BandsWCDMA Band 1, 2, 4, 5, 8LTE B1/B5/B6/B8/B19
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B38/B39/B40/B41/B66)LTE (B1/B3/B5/B8/B38/B40/B41)
LTE category24n/a
5G SupportYesYes

Sound

Speakers Stereo Mono
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes n/a
Speaker Test
Max Volume
Samsung Galaxy S21 Ultra
88 dB
Vivo iQOO Z10
n/a

Other

Class Flagship Mid-range
Announced January, 2021 yr April, 2025 yr
Release Date February, 2021 yr April, 2025 yr
Launch Price ($) 1200 255
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 n/a Yes 90 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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