Samsung Galaxy J7 (2017) vs Galaxy A20

Here we compared two smartphones: the 5.5-inch Samsung Galaxy J7 (2017) (with Exynos 7 Octa 7870) that was released on June 6, 2017, against the Samsung Galaxy A20, which is powered by Exynos 7 Octa 7884 and came out 21 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 J7 (2017)
  • Water-resistant body (IP54 classification)
  • 50% higher pixel density (401 vs 268 PPI)
  • Compatible with Wi-Fi 5 wireless networks
  • Delivers 20% higher maximum brightness (486 against 404 nits)
  • The front-facing camera can record video at 1080p
Reasons to consider the Samsung Galaxy A20
  • Has a 0.9 inch larger screen size
  • Modern USB Type-C port
  • 40% better performance in AnTuTu Benchmark (138K versus 98K)
  • Newer Bluetooth version (v5)
  • Supports 15W fast charging
  • Thinner bezels – 11.9% more screen real estate
  • More recent OS version: Android 11 versus 9
  • Comes with 400 mAh larger battery capacity: 4000 vs 3600 mAh
  • Has an ultra-wide angle camera lens
  • The phone is 1-year and 9-months newer
We may receive a commission from Amazon for purchases made using the links below, but this has no bearing on our assessment methodology.

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 5.5 inches 6.4 inches
Resolution 1080 x 1920 pixels 720 x 1560 pixels
Aspect ratio 16:9 19.5:9
PPI 401 ppi 268 ppi
Refresh rate 60 Hz 60 Hz
HDR support No No
Screen protection Tempered glass Corning Gorilla Glass 3
Screen-to-body ratio 73.1% 85%
Display features - Always-On Display -
Display tests
PWM 257 Hz -
Response time 4.4 ms -
Max. Brightness
486 nits
404 nits
Sources: NotebookCheck [3]

Design and build

Height 152.5 mm (6 inches) 158.4 mm (6.24 inches)
Width 74.8 mm (2.94 inches) 74.7 mm (2.94 inches)
Thickness 8 mm (0.31 inches) 7.8 mm (0.31 inches)
Weight 181 gramm (6.38 oz) 169 gramm (5.96 oz)
Waterproof IP54 No
Rear material Metal Plastic
Frame material Metal Plastic
Colors Black, Gold, Blue, Pink -
Fingerprint scanner Yes, in home button Yes, rear
Screen-to-body ratio
Galaxy A20 +16%
85%

Performance

Tests of Samsung Galaxy J7 (2017) and Samsung Galaxy A20 in the benchmarks
SoC
Chipset Samsung Exynos 7 Octa 7870 Samsung Exynos 7 Octa 7884
Max. clock 1600 MHz 1600 MHz
CPU cores 8 (8) 8 (2 + 6)
Architecture - 8 cores at 1.6 GHz: Cortex-A53 - 6 cores at 1.35 GHz: Cortex-A53
- 2 cores at 1.6 GHz: Cortex-A73
Lithography process 14 nanometers 14 nanometers
Graphics Mali-T830 MP1 Mali-G71 MP2
GPU clock 600 MHz 850 MHz
FLOPS ~23 GFLOPS ~64 GFLOPS
Memory
RAM size 3 GB 3 GB
Memory type LPDDR3 LPDDR3
Memory clock 933 MHz 933 MHz
Channels 2 1
Storage
Storage size 16 GB 32 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
Galaxy A20 +40%
138207
CPU 37842 48062
GPU 8879 20723
Memory 24965 31990
UX 25972 37339
Total score 98488 138207
3DMark Wild Life Performance
Stability - 85%
Graphics test - 1 FPS
Graphics score - 324
Sources: 3DMark [3]

Software

Operating system Android 7.0 (Can be upgraded to Android 9.0) Android 9.0 (Can be upgraded to Android 11)
ROM TouchWiz UI One UI 3.1
OS size 6.1 GB -

Battery

Specifications
Capacity 3600 mAh 4000 mAh
Charge power - 15 W
Battery type Li-Ion Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging No Yes, Samsung Adaptive Fast Charge (25% in 30 min)
Full charging time 2:20 hr 2:00 hr

Battery life tests

Web browsing (Wi-Fi)
Watching videos (Player)
Talk (3G)

Camera

Specs and camera test of smartphones
Main camera
Matrix 13 megapixels 13 megapixels
Image resolution 4128 x 3096 4128 x 3096
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 (13 MP) 2 (13 MP + 5 MP)
Wide (main) lens - 13 MP
- Aperture: f/1.7
- Focal length: 27 mm
- Pixel size: 1.12 micron
- Sensor: 1/3.1", Sony IMX258 (CMOS)
- Phase autofocus
- 13 MP
- Aperture: f/1.9
- Focal length: 28 mm
- Phase autofocus
Ultra-wide lens - - 5 MP
- Aperture: f/2.2
- Focal length: 12 mm
Selfie camera
Megapixels 13 megapixels 8 megapixels
Image resolution 4160 x 3120 3264 x 2448
Aperture f/1.9 f/2.0
Focal length 28 mm -
Sensor type CMOS CMOS
Video resolution 1080p (Full HD) at 30 FPS 720p at 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 5 (802.11 b/g/n) Wi-Fi 4 (802.11 b/g/n)
Wi-Fi features - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
- Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
Bluetooth version 4.1 5
Bluetooth features SPP, PBAP/PAB, OPP, MAP, HID, HFP, HDP, AVRCP, A2DP PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type Micro USB USB Type-C
USB version 2 2
USB features - Charging
- USB-Storage mode
- OTG
- Charging
- USB-Storage mode
GPS GPS, GLONASS, Beidou 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* 6 4
5G support No No

Sound

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

Other

Category Budget Mid-range
Announced June 2017 March 2019
Release date July 2017 March 2019
SAR (head) 0.567 W/kg 0.23 W/kg
SAR (body) 1.33 W/kg 1.38 W/kg
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Hall-effect sensor
- 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 software, camera, connectivity, and sound are more important to you, then choose the Samsung Galaxy A20. But if the display and design are more of a priority – go for the Samsung Galaxy J7 (2017).

Cast your vote

So, which phone would you choose?
7 (70%)
3 (30%)
Total votes: 10

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