Xiaomi Redmi 8 vs Oppo A3s

Here we compared two budget smartphones: the 6.22-inch Xiaomi Redmi 8 (with Qualcomm Snapdragon 439) that was released on October 8, 2019, against the Oppo A3s, which is powered by Qualcomm Snapdragon 450 and came out 15 months before. 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 Xiaomi Redmi 8
  • Comes with 770 mAh larger battery capacity: 5000 vs 4230 mAh
  • Modern USB Type-C port
  • Supports 18W fast charging
  • More recent OS version: Android 10 versus 8.1
  • Fingerprint scanner
  • Slow-motion recording at 120FPS
  • The phone is 1-year and 3-months newer
  • More energy-efficient CPU – Snapdragon 439
  • Has a built-in infrared port
Reasons to consider the Oppo A3s
  • 51% higher pixel density (409 vs 270 PPI)
  • Uses a faster type of memory: LPDDR4X 1866 MHz
  • Weighs 20 grams less
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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
Phone:
vs

Display

Type IPS LCD IPS LCD
Size 6.22 inches 6.2 inches
Resolution 720 x 1520 pixels 1080 x 2340 pixels
Aspect ratio 19:9 19.5:9
PPI 270 ppi 409 ppi
Refresh rate 60 Hz 60 Hz
HDR support No No
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 5
Screen-to-body ratio 81.8% 81.2%
Display tests
RGB color space 95.7% -
PWM Not detected -
Response time 55.2 ms -
Contrast 2308:1 -
Max. Brightness
Redmi 8 +3%
518 nits
503 nits
Sources: NotebookCheck [3]

Design and build

Height 156.5 mm (6.16 inches) 156.2 mm (6.15 inches)
Width 75.4 mm (2.97 inches) 75.6 mm (2.98 inches)
Thickness 9.4 mm (0.37 inches) 8.2 mm (0.32 inches)
Weight 188 gramm (6.63 oz) 168 gramm (5.93 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors Black, Blue, Red Red, Purple
Fingerprint scanner Yes, rear No
Screen-to-body ratio
Redmi 8 +1%
81.8%
81.2%

Performance

Tests of Xiaomi Redmi 8 and Oppo A3s in the benchmarks
SoC
Chipset Qualcomm Snapdragon 439 Qualcomm Snapdragon 450
Max. clock 2000 MHz 2200 MHz
CPU cores 8 (4 + 4) 8 (8)
Architecture - 4 cores at 1.45 GHz: Cortex-A53
- 4 cores at 2 GHz: Cortex-A53
- 8 cores at 1.8 GHz: Cortex-A53
Lithography process 12 nanometers 14 nanometers
Graphics Adreno 505 Adreno 506
GPU clock 450 MHz 500 MHz
FLOPS ~48 GFLOPS ~124 GFLOPS
Memory
RAM size 3, 4 GB 2 GB
Memory type LPDDR3 LPDDR4X
Memory clock 933 MHz 1866 MHz
Channels 1 2
Storage
Storage size 32, 64 GB 16 GB
Storage type eMMC 5.1 eMMC 5.1
Memory card MicroSD MicroSD
Memory card max. size Up to 256 GB Up to 256 GB

Benchmarks

Geekbench 5 (Single-Core)
177
n/a
Geekbench 5 (Multi-Core)
793
n/a
AnTuTu Benchmark 9
109237
n/a
CPU 42493 -
GPU 10332 -
Memory 31215 -
UX 24460 -
Total score 109237 -

Software

Operating system Android 9.0 (Can be upgraded to Android 10.0) Android 8.1
ROM MIUI 12 ColorOS 5.1
OS size 15 GB -

Battery

Specifications
Capacity 5000 mAh 4230 mAh
Charge power 18 W -
Battery type Li-Po Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes, Quick Charge 3.0 (50% in 85 min) No
Full charging time 3:20 hr 3:15 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 12 megapixels 13 megapixels
Image resolution 4000 x 3000 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 120 FPS (720p) No
Angle of widest lens 113° -
Lenses 2 (12 MP + 2 MP) 2 (13 MP + 2 MP)
Wide (main) lens - 12 MP
- Aperture: f/1.8
- Pixel size: 1.4 micron
- Sensor: 1/2.55", Sony IMX363 (BSI CMOS)
- Phase autofocus (Dual Pixel)
- 13 MP
- Aperture: f/2.2
- Pixel size: 1.22 micron
- Sensor: 1/2.6", Sony IMX519 Exmor RS (CMOS)
- Phase autofocus
Depth lens - 2 MP
- Aperture: f/2.4
- 2 MP
- Aperture: f/2.4
Camera features - Bokeh mode
- Pro mode
- Bokeh mode
Selfie camera
Megapixels 8 megapixels 8 megapixels
Image resolution 3648 x 2190 5760 x 4312
Aperture f/2.0 f/2.2
Pixel size 1.12 microns 1.8 microns
Sensor type CMOS CMOS
Sensor size - 1/2.8"
Video resolution 1080p (Full HD) at 30 FPS 1080p (Full HD) at 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 4 (802.11 b/g/n) Wi-Fi 4 (802.11 b/g/n)
Wi-Fi features - Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
Bluetooth version 4.2 4.2
Bluetooth features LE, A2DP LE, A2DP
USB type USB Type-C Micro USB
USB version 2 2
USB features - Charging
- USB-Storage mode
- USB-Host mode
- OTG
- Charging
- USB-Storage mode
- OTG
GPS GPS, GLONASS, Beidou GPS, GLONASS, Beidou
NFC* No No
Infrared port Yes 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* 4 12
5G support No No

Sound

Speakers Mono Mono
Headphone audio jack Yes Yes
FM radio Yes Yes
Dolby Atmos No No
Speakers test
Max. loudness
88.6 dB
n/a

Other

Category Budget Budget
Announced October 2019 July 2018
Release date October 2019 August 2018
SAR (head) 0.231 W/kg -
SAR (body) 1.48 W/kg -
Sensors - Proximity sensor
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

If the software, battery life, camera, design, and sound are more important to you, then choose the Xiaomi Redmi 8. But if the display and performance are more of a priority – go for the Oppo A3s.

Cast your vote

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Total votes: 2

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