Home News Phone Reviews Video

Samsung Galaxy S20 vs Galaxy A51

Source： Date：

Samsung Galaxy S20 vs Galaxy A51

68 out of 100
Samsung Galaxy S20
VS
52 out of 100
Samsung Galaxy A51
Samsung Galaxy S20
Samsung Galaxy A51

Here we compared two smartphones: the 6.2-inch Samsung Galaxy S20 (with Exynos 9 Octa 990) that was released on February 11, 2020, against the Samsung Galaxy A51, which is powered by Exynos 9 Octa 9611 and came out 2 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the devices.

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery life
  6. Camera
  7. Comments

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Samsung Galaxy S20
  • Waterproof body (IP68 classification)
  • 2.6x better performance in AnTuTu Benchmark (652K versus 246K)
  • Higher display refresh rate – 120 Hz
  • 39% higher pixel density (563 vs 405 PPI)
  • Handles wireless charging up to 15W
  • Delivers 29% higher peak brightness (821 against 638 nits)
  • Optical image stabilization
  • The rear camera has a 1.1x optical zoom
  • Uses a faster type of memory: LPDDR5 3200 MHz
  • Compatible with Wi-Fi 6 wireless networks
  • Stereo speakers
  • Supports higher wattage charging (25W versus 15W)
Reasons to consider the Samsung Galaxy A51
  • Shows 9% longer battery life (26:33 vs 24:28 hours)
  • Has a 0.3 inch larger screen size
  • Includes a 3.5 mm headphone audio jack port

Review

Evaluation of Samsung Galaxy S20 and Galaxy A51 crucial features
Display
Screen quality, color accuracy, brightness
Camera
Photo and video recording quality
Performance
CPU and memory performance (apps, system)
Gaming
Capabilities for playing modern games
Battery
Battery life, charging type and speed
Connectivity
Networks, ports, data transmission
NanoReview Score
Final comparison evaluation

Value for money

Tests and specifications

Comparison table of technical specifications and tests
Phone:
Galaxy S20
vs
Galaxy A51

Display

Type Dynamic AMOLED Super AMOLED
Size 6.2 inches 6.5 inches
Resolution 1440 x 3200 pixels 1080 x 2400 pixels
Aspect ratio 20:9 20:9
PPI 563 ppi 405 ppi
Refresh rate 120 Hz 60 Hz
Adaptive refresh rate No No
Max rated brightness 800 nits 400 nits
HDR support Yes, HDR10+ No
Screen protection Corning Gorilla Glass 6 Corning Gorilla Glass 3
Screen-to-body ratio 89.5% 87.4%
Display features - DCI-P3
- Always-On Display 		- Always-On Display
Display tests
RGB color space 99.8% 98.8%
PWM 242 Hz 242 Hz
Response time 8.5 ms 25 ms
Contrast ∞ Infinity ∞ Infinity
Peak brightness test (auto)
Galaxy S20 +29%
821 nits
Galaxy A51
638 nits

Design and build

Height 151.7 mm (5.97 inches) 158.5 mm (6.24 inches)
Width 69.1 mm (2.72 inches) 73.6 mm (2.9 inches)
Thickness 7.9 mm (0.31 inches) 7.9 mm (0.31 inches)
Weight 163 g (5.75 oz) 172 g (6.07 oz)
Waterproof IP68 No
Rear material Glass Plastic
Frame material Metal Plastic
Colors Gray, Blue, Red White, Black
Fingerprint scanner Yes, in-display Yes, in-display
Screen-to-body ratio

Performance

Tests of Samsung Galaxy S20 and Samsung Galaxy A51 in the benchmarks
SoC
Chipset Samsung Exynos 9 Octa 990 Samsung Exynos 9 Octa 9611
Max clock 2700 MHz 2300 MHz
CPU cores 8 (2 + 2 + 4) 8 (4 + 4)
Architecture - 4 cores at 2 GHz: Cortex-A55
- 2 cores at 2.5 GHz: Cortex-A76
- 2 cores at 2.73 GHz: Exynos M5 		- 4 cores at 1.7 GHz: Cortex-A53
- 4 cores at 2.3 GHz: Cortex-A73
L3 cache 2 MB -
Lithography process 7 nanometers 10 nanometers
Graphics Mali-G77 MP11 Mali-G72 MP3
GPU shading units 704 54
GPU clock 550 MHz 850 MHz
FLOPS ~1126 GFLOPS ~91.8 GFLOPS

Benchmarks

Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
AnTuTu Benchmark 10
Galaxy S20 +165%
652761
Galaxy A51
246594
CPU 185116 69792
GPU 195014 55670
Memory 144113 60677
UX 126679 59872
Total score 652761 246594
3DMark Wild Life Performance
Max surface temperature 49.7 °C 42.2 °C
Stability 51% 95%
Graphics test 25 FPS 4 FPS
Graphics score 4221 812
PCMark 3.0
Web score 8843 -
Video editing 6024 -
Photo editing 30239 -
Data manipulation 8544 -
Writing score 11877 -

Memory

RAM
RAM size 8 GB 4, 6 GB
Memory type LPDDR5 LPDDR4X
Memory clock 3200 MHz 1866 MHz
Channels 2 2
Storage
Storage size 128 GB 64, 128 GB
Storage type UFS 3.0 UFS 2.0
Memory card MicroSD MicroSD
Memory card max size Up to 1000 GB Up to 512 GB

Software

Operating system Android 10.0 (Can be upgraded to Android 13) Android 10 (Can be upgraded to Android 13)
ROM One UI 4.1 One UI 5.0
OS size 20.1 GB 23 GB

Battery

Capacity 4000 mAh 4000 mAh
Max charge power 25 W 15 W
Battery type Li-Ion Li-Po
Replaceable 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 charging time 1:15 hr 1:50 hr
Battery life tests
Web browsing 08:40 hr 09:34 hr
Watching video 10:04 hr 11:29 hr
Gaming 04:15 hr 05:12 hr
Standby 83 hr 83 hr
General battery life
Galaxy S20
24:28 hr
Galaxy A51 +9%
26:33 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 12 megapixels 48 megapixels
Image resolution 4000 x 3000 8000 x 6000
Zoom Optical, 1.1x Digital
Flash LED LED
Stabilization Optical Digital
8K video recording Up to 24FPS No
4K video recording Up to 60FPS Up to 30FPS
1080p video recording Up to 60FPS Up to 30FPS
Slow motion 960 FPS (720p) 960 FPS (720p)
Angle of widest lens 120° 120°
Lenses 3 (12 MP + 64 MP + 12 MP) 4 (48 MP + 12 MP + 5 MP + 5 MP)
Wide (main) lens - 12 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 1.8 micron
- Sensor: 1/1.76", Samsung S5K2LD (ISOCELL CMOS)
- Phase autofocus (Dual Pixel)
- Optical stabilization
- 48 MP
- Aperture: f/2.0
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Sony IMX582 (Exmor-RS CMOS)
- Phase autofocus
Telephoto lens - 64 MP
- Aperture: f/2.0
- Pixel size: 0.8 micron
- Sensor: 1/1.72", Samsung Bright S5KGW2 (ISOCELL CMOS)
- Phase autofocus
- Optical stabilization
-
Ultra-wide lens - 12 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.4 micron
- Sensor: 1/2.55", Samsung S5K2LA (ISOCELL CMOS)
- 12 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
Macro lens - - 5 MP
- Aperture: f/2.4
- Focal length: 40 mm
- Pixel size: 1.12 micron
Depth lens - - 5 MP
- Aperture: f/2.2
- Pixel size: 1.12 micron
- Sensor: 1/5.0" (CMOS)
Camera features - Bokeh mode
- Pro mode
- RAW support 		- Bokeh mode
- Pro mode
Selfie camera
Megapixels 10 megapixels 32 megapixels
Image resolution 2592 x 3872 6560 x 4928
Aperture f/2.2 f/2.2
Focal length 26 mm 26 mm
Pixel size 1.22 microns 0.8 microns
Sensor type CMOS ISOCELL CMOS
Sensor size 1/3.2" 1/2.8"
Video resolution 2160p (4K) at 60 FPS 2160p (4K) at 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 6 (802.11 b/g/n/ac/ax) Wi-Fi 5 (802.11 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
Network
Number of SIM * 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support * Yes No
Hybrid slot Yes No
LTE Cat * 22 12
5G support No No

Sound

Speakers Stereo Mono
Headphone audio jack No Yes
FM radio No Yes
Dolby Atmos Yes Yes
Speakers test
Max loudness
Galaxy S20 +5%
85.9 dB
Galaxy A51
81.7 dB

Other

Category Flagship Mid-range
Announced February 2020 December 2019
Release date March 2020 December 2019
SAR (head) 0.28 W/kg 0.596 W/kg
SAR (body) 1.52 W/kg 1.45 W/kg
Sensors - Barometer
- Proximity sensor
- Gyroscope
- Accelerometer
- Compass
- Fingerprint 		- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
* Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

After analyzing all the data, we think that the Samsung Galaxy S20 is definitely a better buy.

Related recommendations
Scroll to Top