Home Phone comparison Samsung Galaxy A31 and Samsung Galaxy A51 - Which is better?

Samsung Galaxy A31 vs Samsung Galaxy A51

43 out 100
Samsung Galaxy A31
VS
41 out 100
Samsung Galaxy A51
Samsung Galaxy A31
Samsung Galaxy A51

Compared 2 smartphones : Samsung Galaxy A31 Manufactured in April, 2020, with display 6.4 with chipsetMediatek Helio P65, vs Samsung Galaxy A51, Manufactured in December, 2019with 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 A31
  • Higher pixel density: 411ppi
  • Higher battery capacity: 5000mAh vs 4000mAh
Reasons to choose Samsung Galaxy A51
  • Larger display: 6.5in
  • Lighter design: 172g vs 185g

Versions

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

Review

Key Specs Samsung Galaxy A31 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.
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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:
Samsung Galaxy A31
vs
Samsung Galaxy A51

Display

Display quality comparison
Type Super AMOLED Super AMOLED
Size 6.4 in 6.5 in
Resolution 1080x2400 pixels 1080x2400 pixels
Aspect ratio 20:9 20:9
Pixel density 411 ppi 405 ppi
Refresh rate 60 Hz 60 Hz
Adaptive refresh rate No No
Max brightness 600 nits 400 nits
HDR support No No
Screen-to-body ratio 84.9 % 87.5 %
Features Always-On Display Always-On Display
Display test
Peak brightness (auto)
Samsung Galaxy A31
629 nits
Samsung Galaxy A51
631 nits
sRGB gamut96.8 %98.8 %
PWM (Flicker)238 Hz242 Hz
Response time8 ms25 ms
Contrast∞ Infinite∞ Infinite
Sources: NotebookCheck [Samsung Galaxy A31], [Samsung Galaxy A51]

Design & Build

Design and ergonomics comparison
Height 159.3 mm (6.27 in) 158.5 mm (6.24 in)
Width 73.1 mm (2.88 in) 73.6 mm (2.9 in)
Thickness 8.6 mm (0.34 in) 7.9 mm (0.31 in)
Weight 185 g (6.53 oz) 172 g (6.07 oz)
Water resistance No No
Back panel Plastic Plastic
Frame Plastic Plastic
Colors - White
- Black
- Blue
- Red		 - White
- Black
Fingerprint sensor Yes In-Display Yes In-Display
Screen-to-body ratio
Samsung Galaxy A31
84.9 %
Samsung Galaxy A51
87.5 %

Performance

Testing Samsung Galaxy A31 and Samsung Galaxy A51 In benchmarks
Processor
Chipset Mediatek Helio P65 Samsung Exynos 9 Octa 9611
Max Frequency 2000 MHz 2300 MHz
CPU Cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6/1.7 (Cortex-A55)
- 2/2 (Cortex-A75)		 - 4/1.7 (Cortex-A53)
- 4/2.3 (Cortex-A73)
Process TSMC Samsung
Transistor Size 12 nm 10 nm
Neural Processor Yes Yes
Graphics Mali-G52 MP2 Mali-G72 MP3
GPU Cores 48 54
GPU Frequency 820 MHz 850 MHz
FLOPS 78.7 GFLOPS 113.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A31
509
Samsung Galaxy A51
512
Geekbench 6 (Multi-Core)
Samsung Galaxy A31
1553
Samsung Galaxy A51
1556
Geekbench 6 (Single-Core)509512
Geekbench 6 (Multi-Core)15531556
AnTuTu 10
AnTuTu 10
Samsung Galaxy A31
197929
Samsung Galaxy A51
268760
CPU7432783857
GPU2421845166
Memory4549163828
UX5389375909
NanoReview Score197929268760
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy A31
572
Samsung Galaxy A51
812
Max Surface Temp.45.2 °C42.2 °C
Stability97 %95 %
Graphics Test3 fps4 fps
Graphics Score572812
Sources: 3DMark [Samsung Galaxy A31], [Samsung Galaxy A51]
PCMark 3.0
PCMark 3.0
Samsung Galaxy A31
5615
Samsung Galaxy A51
n/a
Writing score5825n/a
Web score4447n/a
Video editing4920n/a
Data manipulation4420n/a
NanoReview Score5615n/a

Memory

RAM
RAM Size 4 GB - 4 GB
- 6 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage Capacity- 64 GB
- 128 GB		- 64 GB
- 128 GB
Storage TypeeMMC 5.1UFS 2.0
Memory CardMicroSDMicroSD

Software

OS Android 10 (Upgradeable to Android 12) Android 10 (Upgradeable to Android 13)
OS Size 27 GB 23 GB
UI Skin One UI 4.1 One UI 5.1

Battery

Volume 5000 mAh 4000 mAh
Max Charging Power 15 W 15 W
Battery Type Li-ion Li-Po
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes Samsung Adaptive Fast Charge (50% in 60 min) Yes (40% in 35 min)
Full Charge Time 2:25 h 1:50 h
Battery Life Test
Battery Life
Samsung Galaxy A31
25:27
Samsung Galaxy A51
17:53
Web Browsing10:26 h07:15 h
Video Playback14:36 h11:25 h
Games05:44 h04:49 h
Standby Mode126 h81 h

Main camera

Matrix 48 MP 48 MP
Photo resolution 8000x6000 pixels 8000x6000 pixels
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording No Yes (Up to 30 fps)
1080p Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
Slow Motion No 960 fps (720p)
Wide-angle lens 123 ° 120 °
Lenses count Standard: 48 MP
Ultra-wide: 8 MP
Macro: 5 MP
Depth: 5 MP		 Standard: 48 MP
Ultra-wide: 12 MP
Macro: 5 MP
Depth: 5 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
Main lens
Matrix48 MP48 MP
Aperturef/2.0f/2.0
Focal length26 mm26 mm
SensorSamsung S5KGM2Sony IMX582
Sensor size1/2.01/2
Pixel size0.8 μm0.8 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrix8 MP12 MP
Aperturef/2.2f/2.2
Focal length13 mm13 mm
Sensor size1/4.0n/a
Pixel size1.12 μm1.12 μm
StabilizationDigitalDigital

Front camera

Matrix 20 MP 32 MP
Photo resolution 5963x3354 pixels 6560x4928 pixels
Aperture f/2.2 f/2.2
Focal length n/a 26 mm
Sensor CMOS Samsung S5KGD1
Sensor size n/a 1/2.8
Pixel size n/a 0.8 μm
Autofocus No No
Stabilization Digital Digital
Video resolution 1080p (Full HD) at 30 fps 2160p (4K) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
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
- Galileo
NFC* Yes Yes
Infrared Port No No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM850, GSM900, DCS1800, PCS1900GSM 850 / 900 / 1800 / 2100 / 2600
3G BandsB1 (2100), B2 (1900), B5(850), B8 (900)UMTS 850 / 900 / 1900 / 2100
LTE Bands*LTE (B1/B2/B3/B5/B7/B8/B20/B38/B40/B41)LTE (B850/B900/B1800/B2100/B2600)
LTE category1212
5G SupportNoNo

Sound

Speakers Mono Mono
3.5 mm Jack Yes Yes
FM Radio Yes Yes
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy A31
78.5 dB
Samsung Galaxy A51
81.7 dB

Other

Class Mid-range Mid-range
Announced March, 2020 yr December, 2019 yr
Release Date April, 2020 yr December, 2019 yr
Launch Price ($) 210 399
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- 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

No clear favorite identified yet; updates may follow as new data arrives.

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