Samsung Galaxy A8 Plus (2018) vs Galaxy A31

Here we compared two mid-range smartphones: the 6-inch Samsung Galaxy A8 Plus (2018) (with Exynos 7 Octa 7885) that was released on December 19, 2017, against the Samsung Galaxy A31, which is powered by Mediatek Helio P65 and came out 27 months after. 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 A8 Plus (2018)
  • Waterproof body (IP68 classification)
Reasons to consider the Samsung Galaxy A31
  • Comes with 1500 mAh larger battery capacity: 5000 vs 3500 mAh
  • Delivers 59% higher peak brightness (637 against 401 nits)
  • Thinner bezels – 9.4% more screen real estate
  • Has a 0.4 inch larger screen size
  • More recent OS version: Android 12 versus 9
  • Uses a faster type of memory: LPDDR4X 1866 MHz
  • Has an ultra-wide angle camera lens
  • The phone is 2-years and 3-months newer
  • More energy-efficient CPU – Mediatek Helio P65

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 inches 6.4 inches
Resolution 1080 x 2220 pixels 1080 x 2400 pixels
Aspect ratio 18.5:9 20:9
PPI 411 ppi 411 ppi
Refresh rate 60 Hz 60 Hz
Max rated brightness 400 nits 600 nits
HDR support No No
Screen protection Corning Gorilla Glass 4 Tempered glass
Screen-to-body ratio 75.5% 84.9%
Display features - - Always-On Display
Display tests
RGB color space - 96.8%
PWM - 238 Hz
Response time - 8 ms
Contrast - ∞ Infinity
Peak brightness test (auto)
Galaxy A31 +59%
637 nits
Sources: NotebookCheck [3]

Design and build

Height 159.9 mm (6.3 inches) 159.3 mm (6.27 inches)
Width 75.7 mm (2.98 inches) 73.1 mm (2.88 inches)
Thickness 8.3 mm (0.33 inches) 8.6 mm (0.34 inches)
Weight 191 gramm (6.74 oz) 185 gramm (6.53 oz)
Waterproof IP68 No
Rear material Glass Plastic
Frame material Metal Plastic
Colors Black, Gold, Blue White, Black, Blue, Red
Fingerprint scanner Yes, rear Yes, in-display
Screen-to-body ratio

Performance

Tests of Samsung Galaxy A8 Plus (2018) and Samsung Galaxy A31 in the benchmarks
SoC
Chipset Samsung Exynos 7 Octa 7885 Mediatek Helio P65
Max. clock 2200 MHz 2000 MHz
CPU cores 8 (2 + 6) 8 (2 + 6)
Architecture - 6 cores at 1.6 GHz: Cortex-A53
- 2 cores at 2.2 GHz: Cortex-A73
- 6 cores at 1.7 GHz: Cortex-A55
- 2 cores at 2 GHz: Cortex-A75
Lithography process 14 nanometers 12 nanometers
Graphics Mali-G71 MP2 Mali-G52 MC2
GPU clock 770 MHz 820 MHz
FLOPS ~29 GFLOPS ~56.4 GFLOPS
Memory
RAM size 4 GB 4 GB
Memory type LPDDR4 LPDDR4X
Memory clock 1333 MHz 1866 MHz
Channels 2 2
Storage
Storage size 32 GB 64, 128 GB
Storage type eMMC 5.1 eMMC 5.1
Memory card MicroSD MicroSD
Memory card max. size Up to 256 GB Up to 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
AnTuTu Benchmark 9
CPU - 67651
GPU - 32355
Memory - 35166
UX - 55884
Total score - 192708
3DMark Wild Life Performance
Stability - 97%
Graphics test - 3 FPS
Graphics score - 572
PCMark 3.0 score - 6288
Sources: 3DMark [3]

Software

Operating system Android 7.1.1 (Can be upgraded to Android 9.0) Android 10 (Can be upgraded to Android 12)
ROM One UI One UI 4.1
OS size - 27 GB

Battery

Specifications
Capacity 3500 mAh 5000 mAh
Charge power 18 W 15 W
Battery type Li-Ion Li-Ion
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes, Samsung Adaptive Fast Charge (50% in 30 min) Yes, Samsung Adaptive Fast Charge (50% in 60 min)
Full charging time 2:10 hr 2:25 hr
Battery life tests
Web browsing - 14:31 hr
Watching video - 16:40 hr
Gaming - 05:44 hr
Standby - 126 hr
General battery life

Camera

Specs and camera test of smartphones
Main camera
Matrix 16 megapixels 48 megapixels
Image resolution 4616 x 3464 8000 x 6000
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording No No
1080p video recording Up to 30FPS Up to 30FPS
Slow motion No No
Angle of widest lens - 123°
Lenses 1 (16 MP) 4 (48 MP + 8 MP + 5 MP + 5 MP)
Wide (main) lens - 16 MP
- Aperture: f/1.7
- Focal length: 26 mm
- Pixel size: 1.12 micron
- Sensor: 1/2.8", Samsung S5K2P6SX (ISOCELL CMOS)
- Phase autofocus
- 48 MP
- Aperture: f/2.0
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2.0", Samsung S5KGM2 (ISOCELL CMOS)
- Phase autofocus
Ultra-wide lens - - 8 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/4.0" (CMOS)
Macro lens - - 5 MP
- Aperture: f/2.4
Depth lens - - 5 MP
- Aperture: f/2.4
Camera features - - Bokeh mode
- Pro mode
Selfie camera
Megapixels 16 megapixels 20 megapixels
Image resolution 4608 x 3456 5963 x 3354
Aperture f/1.9 f/2.2
Focal length 27 mm -
Pixel size 1 microns -
Sensor type ISOCELL CMOS CMOS
Sensor size 1/3.1" -
Video resolution 1080p (Full HD) at 30 FPS 1080p (Full HD) at 30 FPS

Connectivity

Wi-Fi standard 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
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 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* No No
Hybrid slot No No
LTE Cat* 11 12
5G support No No

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio No Yes
Dolby Atmos Yes Yes
Speakers test
Max. loudness

Other

Category Mid-range Mid-range
Announced December 2017 March 2020
Release date January 2018 April 2020
SAR (head) 0.32 W/kg 0.49 W/kg
SAR (body) 1.3 W/kg 1.68 W/kg
Sensors - Barometer
- 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 A31 is definitely a better buy.

Cast your vote

So, which phone would you choose?
20 (66.7%)
10 (33.3%)
Total votes: 30

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