Samsung Galaxy S21 vs Apple iPhone 17 Pro

Compared 2 smartphones : Samsung Galaxy S21 Manufactured in February, 2021, with display 6.2 with chipsetSamsung Exynos 2100, vs Apple iPhone 17 Pro, Manufactured in September, 2025 with chipsetApple A19 Pro. Below are specs, tests, pros and cons for each device

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy S21
  • Lighter design: 169g vs 206g
  • Fingerprint scanner
Reasons to choose Apple iPhone 17 Pro
  • Larger display: 6.3in
  • Higher pixel density: 460ppi
  • Higher battery capacity: 4252mAh vs 4000mAh
  • Newer Bluetooth version: 6.0 vs 5
  • Supports DisplayPort

Versions

Available versions and configurations
Memory Options - 8/128 GB
- 8/256 GB
- 12/256 GB
- 12/512 GB
- 12/1024 GB

Review

Key Specs Samsung Galaxy S21 and Apple iPhone 17 Pro
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

Display

Display quality comparison
Type Dynamic AMOLED OLED
Size 6.2 in 6.3 in
Resolution 1080x2400 pixels 1206x2622 pixels
Aspect ratio 20:9 19.5:9
Pixel density 421 ppi 460 ppi
Refresh rate 120 Hz 120 Hz
Adaptive refresh rate Yes (48-120 Hz) Yes (1-120 Hz)
Max brightness 800 nits 3000 nits
HDR support Yes HDR10+ Yes, Dolby Vision
Screen-to-body ratio 85.9 % 90.4 %
Features - DCI-P3
- Always-On Display
- DCI-P3
- Always-On Display
Display test
Peak brightness (auto)
Samsung Galaxy S21
854 nits
Apple iPhone 17 Pro
n/a
sRGB gamut99.5 %n/a
PWM (Flicker)240 Hzn/a
Response time5 msn/a
Contrast∞ Infiniten/a

Design & Build

Design and ergonomics comparison
Height 151.7 mm (5.97 in) 150 mm (5.91 in)
Width 71.2 mm (2.8 in) 71.9 mm (2.83 in)
Thickness 7.9 mm (0.31 in) 8.75 mm (0.34 in)
Weight 169 g (5.96 oz) 206 g (7.27 oz)
Water resistance IP68 IP68
Back panel Plastic Glass
Frame Metal Metal
Colors - White
- Gray
- Pink
- Purple
- Silver
- Blue
- Orange
Fingerprint sensor Yes In-Display No
Screen-to-body ratio
Samsung Galaxy S21
85.9 %
Apple iPhone 17 Pro
90.4 %

Performance

Testing Samsung Galaxy S21 and Apple iPhone 17 Pro In benchmarks
Processor
Chipset Samsung Exynos 2100 Apple A19 Pro
Max Frequency 2900 MHz 4300 MHz
CPU Cores 8 (1 + 3 + 4) 6 (2 + 4)
Architecture - 4/2.2 (Cortex-A55)
- 3/2.81 (Cortex-A78)
- 1/2.91 (Cortex-X1)
4/2.51 ()
Process Samsung TSMC
Transistor Size 5 nm 3 nm
Neural Processor Yes Neural Engine
Graphics Mali-G78 MP14 n/a
GPU Cores 896 n/a
GPU Frequency 854 MHz n/a
FLOPS 1530.4 GFLOPS n/a
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S21
1331
Apple iPhone 17 Pro
3720
Geekbench 6 (Multi-Core)
Samsung Galaxy S21
3593
Apple iPhone 17 Pro
10805
Geekbench 6 (Single-Core)13313720
Geekbench 6 (Multi-Core)359310805
AnTuTu 10
AnTuTu 10
Samsung Galaxy S21
903780
Apple iPhone 17 Pro
2146722
CPU253391519980
GPU281676787998
Memory158352391721
UX210361447023
NanoReview Score9037802146722
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S21
5715
Apple iPhone 17 Pro
n/a
Max Surface Temp.38.9 °Cn/a
Stability66 %n/a
Graphics Test34 fpsn/a
Graphics Score5715n/a
PCMark 3.0
PCMark 3.0
Samsung Galaxy S21
13123
Apple iPhone 17 Pro
n/a
Writing score16101n/a
Web score11909n/a
Video editing7097n/a
Data manipulation10153n/a
NanoReview Score13123n/a

Memory

RAM
RAM Size 8 GB 12 GB
Memory Type LPDDR5 LPDDR5X
Memory Frequency 2750 MHz n/a
Channels 2 4
Storage
Storage Capacity- 128 GB
- 256 GB
256 GB
Storage TypeUFS 3.1NVMe
Memory CardNoNo

Software

OS Android 11 (Upgradeable to Android 14) iOS 26
OS Size 28.1 GB n/a
UI Skin One UI 6.0 n/a

Battery

Volume 4000 mAh 4252 mAh
Max Charging Power 25 W 40 W
Battery Type Li-ion Li-ion
Removable No No
Wireless Charging Yes (15 W) Yes (25 W)
Reverse Charging Yes (Wireless) Yes
Fast Charging Yes (55% in 50 min) Yes (50% in 20 min)
Full Charge Time 1:35 h n/a
Battery Life Test
Battery Life
Samsung Galaxy S21
17:54
Apple iPhone 17 Pro
n/a
Web Browsing06:01 hn/a
Video Playback11:06 hn/a
Games04:21 hn/a
Standby Mode95 hn/a

Main camera

Matrix 12 MP 48 MP
Photo resolution 4000x3000 pixels 8064x6048 pixels
Zoom Optical, 1.1x Optical, 4x
Flash Dual LED Dual LED
Stabilization Optical Optical
8K Recording Up to 24FPS No
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 960 fps (720p) 240 fps (1080p)
Wide-angle lens 120 ° 120 °
Lenses count Standard: 12 MP
Telephoto: 64 MP
Ultra-wide: 12 MP
Standard: 48 MP
Telephoto: 48 MP
Ultra-wide: 48 MP
Depth
Features - Bokeh effect
- Pro mode
- RAW support
- Bokeh effect
- Pro mode
- RAW support
Main lens
Matrix12 MP48 MP
Aperturef/1.8f/1.6
Focal length26 mm24 mm
SensorSony IMX555n/a
Sensor size1/1.761/1.28
Pixel size1.8 μm1.22 μm
AutofocusPhase autofocus (Dual Pixel)Phase autofocus (Dual Pixel)
StabilizationOpticalOptical
Telephoto
Matrix64 MP48 MP
Aperturef/2.0f/2.8
Focal length28 mm120 mm
SensorSamsung Bright S5KGW2n/a
Sensor size1/1.721/2.55
Pixel size0.8 μm0.7 μm
StabilizationOpticalOptical
Ultra-wide lens
Matrix12 MP48 MP
Aperturef/2.2f/2.2
Focal length13 mm13 mm
SensorSony IMX563n/a
Sensor size1/2.551/2.55
Pixel size1.4 μm0.7 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy S21
129
Apple iPhone 17 Pro
n/a
Video quality
Samsung Galaxy S21
137
Apple iPhone 17 Pro
n/a
Overall camera score
Samsung Galaxy S21
133
Apple iPhone 17 Pro
n/a
Bokeh70n/a
Preview72n/a
Zoom126n/a

Front camera

Matrix 10 MP 24 MP
Photo resolution 3872x2592 pixels n/a
Aperture f/2.2 f/1.9
Focal length 26 mm 23 mm
Sensor Sony IMX374 n/a
Sensor size 1/3.24 n/a
Pixel size 1.22 μm 1.12 μm
Autofocus Phase autofocus (Dual Pixel) Phase autofocus
Stabilization Digital Optical
Video resolution 2160p (4K) at 60 fps 2160p (4K) at 60 fps
TOF 3D sensor No Yes

Connectivity

Wi-Fi version Wi-Fi 6 (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 6.0
Bluetooth features LE, A2DP LE
USB type USB Type-C USB Type-C
USB version 3.2 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
- NAVIC
NFC* Yes Yes
Infrared Port No No
Connectivity
SIM Count*2n/a
SIM TypeNanoeSIM
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesYes
Hybrid SlotNoNo
2G BandsGSM 850, 900, 1800, 1900 MHzn/a
3G BandsWCDMA Band 1, 2, 4, 5, 8UMTS/HSPA+/DC-HSDPA 850, 900, 1700/2100, 1900, 2100 MHz
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/B2/B3/B4/B5/B7/B8/B12/B13/B14/B17/B18/B19/B20/B25/B26/B28/B29/B30/B32/B66/B71)
LTE category24n/a
5G SupportYesYes

Sound

Speakers Stereo n/a
3.5 mm Jack No No
FM Radio No No
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy S21
87 dB
Apple iPhone 17 Pro
n/a

Other

Class Flagship Flagship
Announced January, 2021 yr September, 2025 yr
Release Date February, 2021 yr September, 2025 yr
Launch Price ($) 800 n/a
MSRP ($) n/a 1099
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Face Sensor
Charger Included n/a No
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Apple iPhone 17 Pro the clear winner in this comparison.

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