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Samsung Galaxy A71 vs Galaxy A51

Here we compared two mid-range smartphones: the 6.7-inch Samsung Galaxy A71 (with Qualcomm Snapdragon 730) that was released on December 12, 2019, against the Samsung Galaxy A51, which is powered by Exynos 9 Octa 9611. 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 A71
  • Shows 19% longer battery life (102 vs 86 hours)
  • 45% better performance in AnTuTu Benchmark (256K versus 177K)
  • Comes with 500 mAh larger battery capacity: 4500 vs 4000 mAh
  • Faster storage type - UFS 2.1 versus UFS 2.0
  • More energy-efficient CPU – Snapdragon 730
  • 55% faster in single-core GeekBench 5 test: 551 and 355 points
Reasons to consider the Samsung Galaxy A51
  • Delivers 23% higher maximum brightness (636 against 517 nits)
  • More recent OS version: Android 11 versus 10
  • The front-facing camera can record video at 4K

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 Super AMOLED
Size 6.7 inches 6.5 inches
Resolution 1080 x 2400 pixels 1080 x 2400 pixels
Aspect ratio 20:9 20:9
PPI 393 ppi 405 ppi
Refresh rate 60 Hz 60 Hz
HDR support No No
Screen protection Corning Gorilla Glass 3 Corning Gorilla Glass 3
Screen-to-body ratio 87.2% 87.4%
Display features - Always-On Display - Always-On Display
Display tests
RGB color space 98.2% 98.8%
PWM 247 Hz 242 Hz
Response time 3.8 ms 25 ms
Contrast ∞ Infinity ∞ Infinity
Max. Brightness
517 nits
Galaxy A51 +23%
636 nits
Sources: NotebookCheck [1], [2]

Design and build

Height 163.6 mm (6.44 inches) 158.5 mm (6.24 inches)
Width 76 mm (2.99 inches) 73.6 mm (2.9 inches)
Thickness 7.7 mm (0.3 inches) 7.9 mm (0.31 inches)
Weight 179 gramm (6.31 oz) 172 gramm (6.07 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors Black, Silver, Blue, Pink White, Black
Fingerprint scanner Yes, in-display Yes, in-display
Screen-to-body ratio
87.2%
87.4%

Performance

Tests of Samsung Galaxy A71 and Samsung Galaxy A51 in the benchmarks
SoC
Chipset Qualcomm Snapdragon 730 Samsung Exynos 9 Octa 9611
Max. clock 2200 MHz 2300 MHz
CPU cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6 cores at 1.8 GHz: Kryo 470 Silver (Cortex-A55)
- 2 cores at 2.2 GHz: Kryo 470 Gold (Cortex-A76)
- 4 cores at 1.7 GHz: Cortex-A53
- 4 cores at 2.3 GHz: Cortex-A73
Lithography process 8 nanometers 10 nanometers
Graphics Adreno 618 Mali-G72 MP3
GPU clock 500 MHz 850 MHz
FLOPS ~386 GFLOPS ~259 GFLOPS
Memory
RAM size 6 GB 4, 6 GB
Memory type LPDDR4X LPDDR4X
Memory clock 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage size 128 GB 64, 128 GB
Storage type UFS 2.1 UFS 2.0
Memory card MicroSD MicroSD
Memory card max. size Up to 512 GB Up to 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Galaxy A71 +55%
551
Geekbench 5 (Multi-Core)
Galaxy A71 +33%
1724
1298
AnTuTu Benchmark 8
Galaxy A71 +45%
256015
177106

Software

Operating system Android 10 Android 10 (Can be upgraded to Android 11)
ROM One UI 2.5 One UI 3.0
OS size 23.8 GB 23 GB

Battery

Specifications
Capacity 4500 mAh 4000 mAh
Charge power 25 W 15 W
Battery type Li-Po Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes (50% in 35 min) Yes (40% in 35 min)
Full charging time 2:00 hr 1:50 hr

Battery life tests

Web browsing (Wi-Fi)
13:18 hr
13:21 hr
Watching videos (Player)
Galaxy A71 +23%
17:48 hr
14:22 hr
Talk (3G)
Galaxy A71 +40%
30:02 hr
21:51 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 64 megapixels 48 megapixels
Image resolution 9000 x 7000 8000 x 6000
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording Up to 30FPS Up to 30FPS
1080p video recording Up to 240FPS Up to 120FPS
Slow motion 960 FPS (1080p) 960 FPS (720p)
Angle of widest lens 120° 120°
Lenses 4 (64 MP + 12 MP + 5 MP + 5 MP) 4 (48 MP + 12 MP + 5 MP + 5 MP)
Wide (main) lens - 64 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/1.7", Samsung Bright S5KGW1 (ISOCELL CMOS)
- Phase autofocus
- 48 MP
- Aperture: f/2.0
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Samsung S5KGM2 (ISOCELL CMOS)
- Phase autofocus
Ultra-wide lens - 12 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- 12 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
Macro lens - 5 MP
- Aperture: f/2.4
- 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)
- 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
Samples Photo samples of Samsung Galaxy A71 from DxOMark -
Selfie camera
Megapixels 32 megapixels 32 megapixels
Image resolution 6528 x 4896 6560 x 4928
Aperture f/2.2 f/2.2
Focal length 26 mm 26 mm
Pixel size 0.8 microns 0.8 microns
Sensor type ISOCELL CMOS ISOCELL CMOS
Sensor size 1/2.8" 1/2.8"
Video resolution 1080p (Full HD) при 30 FPS 2160p (4K) при 30 FPS

DxOMark camera tests

Photo quality
Video quality
Generic camera score

Connectivity

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

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos Yes Yes
Speakers test
Max. loudness
85.6 dB
82.5 dB

Other

Category Mid-range Mid-range
Announced December 2019 December 2019
Release date February 2020 December 2019
Launch price ~ 375 USD ~ 250 USD
SAR (head) 0.51 W/kg 0.596 W/kg
SAR (body) 1.56 W/kg 1.45 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

If the performance, battery life, and connectivity are more important to you, then choose the Samsung Galaxy A71. But if the software is more of a priority – go for the Samsung Galaxy A51.

Cast your vote

So, which phone would you choose?
1185 (61%)
757 (39%)
Total votes: 1942

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