Home Phone comparison Samsung Galaxy A42 and Samsung Galaxy A51 - Which is better?

Samsung Galaxy A42 vs Samsung Galaxy A51

46 out 100
Samsung Galaxy A42
VS
41 out 100
Samsung Galaxy A51
Samsung Galaxy A42
Samsung Galaxy A51

Compared 2 smartphones : Samsung Galaxy A42 Manufactured in November, 2020, with display 6.6 with chipsetQualcomm Snapdragon 750 5G, 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 A42
  • Larger display: 6.6in
  • Higher battery capacity: 5000mAh vs 4000mAh
Reasons to choose Samsung Galaxy A51
  • Higher pixel density: 405ppi
  • Lighter design: 172g vs 193g

Versions

Available versions and configurations
Memory Options - 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 A42 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 A42
vs
Samsung Galaxy A51

Display

Display quality comparison
Type Super AMOLED Super AMOLED
Size 6.6 in 6.5 in
Resolution 720x1600 pixels 1080x2400 pixels
Aspect ratio 20:9 20:9
Pixel density 266 ppi 405 ppi
Refresh rate 60 Hz 60 Hz
Adaptive refresh rate No No
Max brightness 500 nits 400 nits
HDR support No No
Screen-to-body ratio 84.3 % 87.5 %
Features Always-On Display Always-On Display
Display test
Peak brightness (auto)
Samsung Galaxy A42
565 nits
Samsung Galaxy A51
631 nits
sRGB gamut97.7 %98.8 %
PWM (Flicker)242 Hz242 Hz
Response time9.5 ms25 ms
Contrast∞ Infinite∞ Infinite
Sources: NotebookCheck [Samsung Galaxy A42], [Samsung Galaxy A51]

Design & Build

Design and ergonomics comparison
Height 164.4 mm (6.47 in) 158.5 mm (6.24 in)
Width 75.9 mm (2.99 in) 73.6 mm (2.9 in)
Thickness 8.6 mm (0.34 in) 7.9 mm (0.31 in)
Weight 193 g (6.81 oz) 172 g (6.07 oz)
Water resistance No No
Back panel Plastic Plastic
Frame Plastic Plastic
Colors - White
- Black
- Gray		 - White
- Black
Fingerprint sensor Yes In-Display Yes In-Display
Screen-to-body ratio
Samsung Galaxy A42
84.3 %
Samsung Galaxy A51
87.5 %

Performance

Testing Samsung Galaxy A42 and Samsung Galaxy A51 In benchmarks
Processor
Chipset Qualcomm Snapdragon 750 5G Samsung Exynos 9 Octa 9611
Max Frequency 2200 MHz 2300 MHz
CPU Cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6/1.8 (Kryo 570 Silver (Cortex-A55))
- 2/2.2 (Kryo 570 Gold (Cortex-A77))		 - 4/1.7 (Cortex-A53)
- 4/2.3 (Cortex-A73)
Process Samsung Samsung
Transistor Size 8 nm 10 nm
Neural Processor Hexagon 694 Yes
Graphics Adreno 619 Mali-G72 MP3
GPU Cores 256 54
GPU Frequency 825 MHz 850 MHz
FLOPS 422.4 GFLOPS 113.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A42
829
Samsung Galaxy A51
512
Geekbench 6 (Multi-Core)
Samsung Galaxy A42
2044
Samsung Galaxy A51
1556
Geekbench 6 (Single-Core)829512
Geekbench 6 (Multi-Core)20441556
AnTuTu 10
AnTuTu 10
Samsung Galaxy A42
346841
Samsung Galaxy A51
268760
CPU11536483857
GPU7904245166
Memory7204863828
UX8038775909
NanoReview Score346841268760
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy A42
n/a
Samsung Galaxy A51
812
Max Surface Temp.n/a42.2 °C
Stabilityn/a95 %
Graphics Testn/a4 fps
Graphics Scoren/a812
Sources: 3DMark [Samsung Galaxy A51]

Memory

RAM
RAM Size - 4 GB
- 6 GB
- 8 GB		 - 4 GB
- 6 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage Capacity128 GB- 64 GB
- 128 GB
Storage TypeUFS 2.1UFS 2.0
Memory CardMicroSDMicroSD

Software

OS Android 10 (Upgradeable to Android 13) Android 10 (Upgradeable to Android 13)
OS Size 20 GB 23 GB
UI Skin One UI 3.1 One UI 5.1

Battery

Volume 5000 mAh 4000 mAh
Max Charging Power 15 W 15 W
Battery Type Li-Po Li-Po
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes (27% in 30 min) Yes (40% in 35 min)
Full Charge Time 2:01 h 1:50 h
Battery Life Test
Battery Life
Samsung Galaxy A42
26:28
Samsung Galaxy A51
17:53
Web Browsing10:34 h07:15 h
Video Playback15:12 h11:25 h
Games06:09 h04:49 h
Standby Mode132 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 Yes (Up to 30 fps) Yes (Up to 30 fps)
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 480 fps (720p) 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/1.8f/2.0
Focal length26 mm26 mm
SensorSamsung S5KGM2Sony IMX582
Sensor size1/21/2
Pixel size0.8 μm0.8 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrix8 MP12 MP
Aperturef/2.2f/2.2
Focal lengthn/a13 mm
SensorSamsung S5K4HAn/a
Pixel size1.12 μm1.12 μm
StabilizationDigitalDigital

Front camera

Matrix 20 MP 32 MP
Photo resolution 5184x3880 pixels 6560x4928 pixels
Aperture f/2.2 f/2.2
Focal length n/a 26 mm
Sensor Hynix HI-2021 Samsung S5KGD1
Sensor size n/a 1/2.8
Pixel size 1 μm 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
- Wi-Fi Display		 - 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 SlotYesNo
2G BandsGSM850, GSM900, DCS1800, PCS1900GSM 850 / 900 / 1800 / 2100 / 2600
3G BandsWCDMA B1(2100), B2(1900), B4(AWS), B5(850), B8(900)UMTS 850 / 900 / 1900 / 2100
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B17/B20/B28)LTE (B850/B900/B1800/B2100/B2600)
LTE category1812
5G SupportYesNo

Sound

Speakers Mono Mono
3.5 mm Jack Yes Yes
FM Radio No Yes
Dolby Atmos Yes Yes
Speaker Test
Max Volume
Samsung Galaxy A42
82.9 dB
Samsung Galaxy A51
81.7 dB

Other

Class Mid-range Mid-range
Announced September, 2020 yr December, 2019 yr
Release Date November, 2020 yr December, 2019 yr
Launch Price ($) 365 399
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

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