Samsung Galaxy A51 vs Galaxy A20e

Here we compared two mid-range smartphones: the 6.5-inch Samsung Galaxy A51 (with Exynos 9 Octa 9611) that was released on December 12, 2019, against the Samsung Galaxy A20e, which is powered by Exynos 7 Octa 7884 and came out 8 months before. On this page, you will find tests, full specs, strengths, and weaknesses of each of the gadgets.

Key differences

An overview of the main advantages of each smartphone
Reasons to consider the Samsung Galaxy A51
  • Has a 0.7 inch larger screen size
  • Comes with 1000 mAh larger battery capacity: 4000 vs 3000 mAh
  • 37% higher pixel density (405 vs 296 PPI)
  • Compatible with Wi-Fi 5 wireless networks
  • Newer Bluetooth version (v5)
  • Delivers 34% higher maximum brightness (631 against 471 nits)
  • Slow-motion recording at 960FPS
  • More recent OS version: Android 12 versus 10
  • 29% better performance in AnTuTu Benchmark (216K versus 168K)
  • Uses a faster type of memory: LPDDR4X 1866 MHz
  • Ability to record video in 4K resolution
  • More energy-efficient CPU – Exynos 9 Octa 9611
Reasons to consider the Samsung Galaxy A20e
  • Weighs 31 grams less

Review

Display
Screen quality, color accuracy, brightness
Performance
CPU/GPU performance in apps and games
Battery
Battery life, charging type and speed
Camera
Photo and video recording quality
Connectivity
Networks, ports, data transmission
NanoReview score
Final comparison evaluation

Value for money

You can enter your local price of these phones (in USD or any other currency) and click on the "Calculate" button to see which one has a better value for money.
Price

Tests and specifications

Comparison table of technical specifications and tests

Display

Type Super AMOLED IPS LCD
Size 6.5 inches 5.8 inches
Resolution 1080 x 2400 pixels 720 x 1560 pixels
Aspect ratio 20:9 19.5:9
PPI 405 ppi 296 ppi
Refresh rate 60 Hz 60 Hz
HDR support No No
Screen protection Corning Gorilla Glass 3 Tempered glass
Screen-to-body ratio 87.4% 80.98%
Display features - Always-On Display -
Display tests
RGB color space 98.8% 96.2%
PWM 242 Hz 349 Hz
Response time 25 ms 32.6 ms
Contrast ∞ Infinity 1357:1
Max. Brightness
Galaxy A51 +34%
631 nits
471 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 158.5 mm (6.24 inches) 147.4 mm (5.8 inches)
Width 73.6 mm (2.9 inches) 69.7 mm (2.74 inches)
Thickness 7.9 mm (0.31 inches) 8.4 mm (0.33 inches)
Weight 172 gramm (6.07 oz) 141 gramm (4.97 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors White, Black Black, Red
Fingerprint scanner Yes, in-display Yes, rear
Screen-to-body ratio
87.4%
80.98%

Performance

Tests of Samsung Galaxy A51 and Samsung Galaxy A20e in the benchmarks
SoC
Chipset Samsung Exynos 9 Octa 9611 Samsung Exynos 7 Octa 7884
Max. clock 2300 MHz 1600 MHz
CPU cores 8 (4 + 4) 8 (2 + 6)
Architecture - 4 cores at 1.7 GHz: Cortex-A53
- 4 cores at 2.3 GHz: Cortex-A73
- 6 cores at 1.35 GHz: Cortex-A53
- 2 cores at 1.6 GHz: Cortex-A73
Lithography process 10 nanometers 14 nanometers
Graphics Mali-G72 MP3 Mali-G71 MP2
GPU clock 850 MHz 770 MHz
FLOPS ~259 GFLOPS ~64 GFLOPS
Memory
RAM size 4, 6 GB 3 GB
Memory type LPDDR4X LPDDR4
Memory clock 1866 MHz 1333 MHz
Channels 2 2
Storage
Storage size 64, 128 GB 32 GB
Storage type UFS 2.0 eMMC 5.1
Memory card MicroSD MicroSD
Memory card max. size Up to 512 GB Up to 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Galaxy A51 +50%
349
Geekbench 5 (Multi-Core)
Galaxy A51 +50%
1280
AnTuTu Benchmark 9
Galaxy A51 +29%
216865
168111
CPU 49711 47677
GPU 53719 52084
Memory 43824 30737
UX 70475 38477
Total score 216865 168111
3DMark Wild Life Performance
Galaxy A51 +151%
812
Stability 95% 95%
Graphics test 4 FPS 1 FPS
Graphics score 812 323
Sources: 3DMark [3], [4]

Software

Operating system Android 10 (Can be upgraded to Android 12) Android 9.0 (Can be upgraded to Android 10)
ROM One UI 4.1 One UI 2.0
OS size 23 GB 10.9 GB

Battery

Specifications
Capacity 4000 mAh 3000 mAh
Charge power 15 W 15 W
Battery type Li-Po Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes (40% in 35 min) Yes, Samsung Adaptive Fast Charge (30% in 20 min)
Full charging time 1:50 hr 1:40 hr
Battery life tests
Web browsing 09:34 hr -
Watching video 11:29 hr -
Gaming 05:12 hr -
Standby 83 hr -
General battery life
26:33 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 48 megapixels 13 megapixels
Image resolution 8000 x 6000 4128 x 3096
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording Up to 30FPS No
1080p video recording Up to 30FPS Up to 30FPS
Slow motion 960 FPS (720p) 120 FPS (720p)
Angle of widest lens 120° 123°
Lenses 4 (48 MP + 12 MP + 5 MP + 5 MP) 2 (13 MP + 5 MP)
Wide (main) lens - 48 MP
- Aperture: f/2.0
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Samsung S5KGM2 (ISOCELL CMOS)
- Phase autofocus
- 13 MP
- Aperture: f/1.9
- Focal length: 28 mm
- Pixel size: 1.12 micron
- Sensor: 1/3.1", Samsung S5K3L6 (ISOCELL CMOS)
- Phase autofocus
Ultra-wide lens - 12 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- 5 MP
- Aperture: f/2.2
- Focal length: 12 mm
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
- Bokeh mode
- Pro mode
Selfie camera
Megapixels 32 megapixels 8 megapixels
Image resolution 6560 x 4928 3264 x 2448
Aperture f/2.2 f/2.0
Focal length 26 mm -
Pixel size 0.8 microns -
Sensor type ISOCELL CMOS CMOS
Sensor size 1/2.8" -
Video resolution 2160p (4K) at 30 FPS 720p at 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 5 (802.11 b/g/n/ac) Wi-Fi 4 (802.11 b/g/n)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
Bluetooth version 5 4.2
Bluetooth features PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB-Storage mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou, Galileo GPS, GLONASS, Beidou
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* No No
Hybrid slot No No
LTE Cat* 12 6
5G support No -

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos Yes Yes
Speakers test
Max. loudness
81.7 dB
81.6 dB

Other

Category Mid-range Mid-range
Announced December 2019 April 2019
Release date December 2019 May 2019
SAR (head) 0.596 W/kg 0.5 W/kg
SAR (body) 1.45 W/kg 1.3 W/kg
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- 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 A51 is definitely a better buy.

Cast your vote

So, which phone would you choose?
4 (80%)
1 (20%)
Total votes: 5

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