Home Phone comparison Samsung Galaxy S20 and Samsung Galaxy A51 - Which is better?

Samsung Galaxy S20 vs Samsung Galaxy A51

62 out 100
Samsung Galaxy S20
VS
41 out 100
Samsung Galaxy A51
Samsung Galaxy S20
Samsung Galaxy A51

Compared 2 smartphones : Samsung Galaxy S20 Manufactured in March, 2020, with display 6.2 with chipsetSamsung Exynos 9 Octa 990, vs Samsung Galaxy A51, Manufactured in December, 2019 with chipsetSamsung Exynos 9 Octa 9611. 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 S20
  • Higher pixel density: 563ppi
  • Higher refresh rate: 120Hz
  • Lighter design: 163g vs 172g
  • Supports newer USB: 3.1 vs 2
  • Built-in eSIM
Reasons to choose Samsung Galaxy A51
  • Larger display: 6.5in

Versions

Available versions and configurations
Memory Options 8/128 GB - 4/64 GB
- 4/128 GB
- 6/128 GB
- 8/128 GB
- 8/256 GB

Review

Key Specs Samsung Galaxy S20 and Samsung Galaxy A51
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:
Samsung Galaxy S20
vs
Samsung Galaxy A51

Display

Display quality comparison
Type Dynamic AMOLED Super AMOLED
Size 6.2 in 6.5 in
Resolution 1440x3200 pixels 1080x2400 pixels
Aspect ratio 20:9 20:9
Pixel density 563 ppi 405 ppi
Refresh rate 120 Hz 60 Hz
Adaptive refresh rate No No
Max brightness 800 nits 400 nits
HDR support Yes HDR10+ No
Screen-to-body ratio 88.5 % 87.5 %
Features - DCI-P3
- Always-On Display		 Always-On Display
Display test
Peak brightness (auto)
Samsung Galaxy S20
809 nits
Samsung Galaxy A51
631 nits
sRGB gamut99.8 %98.8 %
PWM (Flicker)242 Hz242 Hz
Response time8.5 ms25 ms
Contrast∞ Infinite∞ Infinite
Sources: NotebookCheck [Samsung Galaxy S20], [Samsung Galaxy A51]

Design & Build

Design and ergonomics comparison
Height 151.7 mm (5.97 in) 158.5 mm (6.24 in)
Width 69.1 mm (2.72 in) 73.6 mm (2.9 in)
Thickness 7.9 mm (0.31 in) 7.9 mm (0.31 in)
Weight 163 g (5.75 oz) 172 g (6.07 oz)
Water resistance IP68 No
Back panel Glass Plastic
Frame Metal Plastic
Colors - Gray
- Blue
- Red		 - White
- Black
Fingerprint sensor Yes In-Display Yes In-Display
Screen-to-body ratio
Samsung Galaxy S20
88.5 %
Samsung Galaxy A51
87.5 %

Performance

Testing Samsung Galaxy S20 and Samsung Galaxy A51 In benchmarks
Processor
Chipset Samsung Exynos 9 Octa 990 Samsung Exynos 9 Octa 9611
Max Frequency 3020 MHz 2300 MHz
CPU Cores 8 (2 + 2 + 4) 8 (4 + 4)
Architecture - 4/2 (Cortex-A55)
- 2/2.5 (Cortex-A76)
- 2/2.73 (Exynos M5)		 - 4/1.7 (Cortex-A53)
- 4/2.3 (Cortex-A73)
Process Samsung Samsung
Transistor Size 7 nm 10 nm
Neural Processor Yes Yes
Graphics Mali-G77 MP11 Mali-G72 MP3
GPU Cores 704 54
GPU Frequency 550 MHz 850 MHz
FLOPS 1126 GFLOPS 113.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S20
1139
Samsung Galaxy A51
512
Geekbench 6 (Multi-Core)
Samsung Galaxy S20
3080
Samsung Galaxy A51
1556
Geekbench 6 (Single-Core)1139512
Geekbench 6 (Multi-Core)30801556
AnTuTu 10
AnTuTu 10
Samsung Galaxy S20
680061
Samsung Galaxy A51
268760
CPU20694083857
GPU18077045166
Memory13699963828
UX15535275909
NanoReview Score680061268760
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S20
4221
Samsung Galaxy A51
812
Max Surface Temp.49.7 °C42.2 °C
Stability51 %95 %
Graphics Test25 fps4 fps
Graphics Score4221812
Sources: 3DMark [Samsung Galaxy S20], [Samsung Galaxy A51]
PCMark 3.0
PCMark 3.0
Samsung Galaxy S20
11213
Samsung Galaxy A51
n/a
Writing score13300n/a
Web score9221n/a
Video editing6001n/a
Data manipulation8487n/a
NanoReview Score11213n/a

Memory

RAM
RAM Size 8 GB - 4 GB
- 6 GB
Memory Type LPDDR5 LPDDR4X
Memory Frequency 3200 MHz 1866 MHz
Channels 2 2
Storage
Storage Capacity128 GB- 64 GB
- 128 GB
Storage TypeUFS 3.0UFS 2.0
Memory CardMicroSDMicroSD

Software

OS Android 10.0 (Upgradeable to Android 13) Android 10 (Upgradeable to Android 13)
OS Size 20.1 GB 23 GB
UI Skin One UI 5.1 One UI 5.1

Battery

Volume 4000 mAh 4000 mAh
Max Charging Power 25 W 15 W
Battery Type Li-ion Li-Po
Removable No No
Wireless Charging Yes (15 W) No
Reverse Charging Yes (Wireless) No
Fast Charging Yes (100% in 75 min) Yes (40% in 35 min)
Full Charge Time 1:15 h 1:50 h
Battery Life Test
Battery Life
Samsung Galaxy S20
16:07
Samsung Galaxy A51
17:53
Web Browsing06:49 h07:15 h
Video Playback10:33 h11:25 h
Games04:30 h04:49 h
Standby Mode69 h81 h

Main camera

Matrix 12 MP 48 MP
Photo resolution 4000x3000 pixels 8000x6000 pixels
Zoom Optical, 1.1x Digital
Flash LED LED
Stabilization Optical Digital
8K Recording Up to 24FPS No
4K Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 960 fps (720p) 960 fps (720p)
Wide-angle lens 120 ° 120 °
Lenses count Standard: 12 MP
Telephoto: 64 MP
Ultra-wide: 12 MP		 Standard: 48 MP
Ultra-wide: 12 MP
Macro: 5 MP
Depth: 5 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
Main lens
Matrix12 MP48 MP
Aperturef/1.8f/2.0
Focal length26 mm26 mm
SensorSamsung S5K2LDSony IMX582
Sensor size1/1.761/2
Pixel size1.8 μm0.8 μm
AutofocusPhase autofocus (Dual Pixel)Phase autofocus
StabilizationOpticalDigital
Telephoto
Matrix64 MPn/a
Aperturef/2.0n/a
Focal length29 mmn/a
SensorSamsung Bright S5KGW2n/a
Sensor size1/1.72n/a
Pixel size0.8 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix12 MP12 MP
Aperturef/2.2f/2.2
Focal length13 mm13 mm
SensorSamsung S5K2LAn/a
Sensor size1/2.55n/a
Pixel size1.4 μm1.12 μm
StabilizationDigitalDigital

Front camera

Matrix 10 MP 32 MP
Photo resolution 2592x3872 pixels 6560x4928 pixels
Aperture f/2.2 f/2.2
Focal length 26 mm 26 mm
Sensor Samsung S5K3J1 Samsung S5KGD1
Sensor size 1/3.2 1/2.8
Pixel size 1.22 μm 0.8 μm
Autofocus Phase autofocus (Dual Pixel) No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 2160p (4K) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 b/g/n/ac/ax) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features LE, A2DP PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type USB Type-C USB Type-C
USB version 3.1 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port No No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotYesNo
2G BandsGSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2GSM 850 / 900 / 1800 / 2100 / 2600
3G BandsHSDPA 850 / 900 / 1900 / 2100UMTS 850 / 900 / 1900 / 2100
LTE Bands*LTE (B850/B900/B1700/B1900/B2100)LTE (B850/B900/B1800/B2100/B2600)
LTE category2212
5G SupportNoNo

Sound

Speakers Stereo Mono
3.5 mm Jack No Yes
FM Radio No Yes
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy S20
85.9 dB
Samsung Galaxy A51
81.7 dB

Other

Class Flagship Mid-range
Announced February, 2020 yr December, 2019 yr
Release Date March, 2020 yr December, 2019 yr
Launch Price ($) 999 399
Sensors - Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy S20 the clear winner in this comparison.

Survey

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Total Votes: 1

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