Xiaomi Redmi 9A vs Oppo Realme C31

Here we compared two budget smartphones: the 6.53-inch Xiaomi Redmi 9A (with MediaTek Helio G25) that was released on June 30, 2020, against the Oppo Realme C31, which is powered by Unisoc Tiger T612 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 Xiaomi Redmi 9A
  • Delivers 10% higher peak brightness (432 against 393 nits)
  • The front-facing camera can record video at 1080p
Reasons to consider the Oppo Realme C31
  • 2.2x better performance in AnTuTu Benchmark (208K versus 93K)
  • Fingerprint scanner
  • The phone is 1-year and 9-months newer
  • Faster storage type - UFS 2.2 versus eMMC 5.1
  • 2.5x faster in single-core GeekBench 5 test: 344 and 135 points

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 6.53 inches 6.5 inches
Resolution 720 x 1600 pixels 720 x 1600 pixels
Aspect ratio 20:9 20:9
PPI 269 ppi 270 ppi
Refresh rate 60 Hz 60 Hz
Max rated brightness 400 nits 415 nits
HDR support No No
Screen protection Tempered glass Tempered glass
Screen-to-body ratio 81.1% 81.4%
Display tests
RGB color space 92.9% -
PWM - Not detected
Response time 40 ms 48 ms
Contrast 1318:1 1033:1
Peak brightness test (auto)
Redmi 9A +10%
432 nits
393 nits
Sources: NotebookCheck [3], [4]

Design and build

Height 164.9 mm (6.49 inches) 164.7 mm (6.48 inches)
Width 77 mm (3.03 inches) 76.1 mm (3 inches)
Thickness 9 mm (0.35 inches) 8.4 mm (0.33 inches)
Weight 194 gramm (6.84 oz) 197 gramm (6.95 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors Gray, Blue, Green Silver, Green
Fingerprint scanner No Yes, in home button
Screen-to-body ratio
81.1%
81.4%

Performance

Tests of Xiaomi Redmi 9A and Oppo Realme C31 in the benchmarks
SoC
Chipset MediaTek Helio G25 Unisoc Tiger T612
Max. clock 2000 MHz 1800 MHz
CPU cores 8 (4 + 4) 8 (2 + 6)
Architecture - 4 cores at 1.5 GHz: Cortex-A53
- 4 cores at 2 GHz: Cortex-A53
- 6 cores at 1.8 GHz: Cortex-A55
- 2 cores at 1.8 GHz: Cortex-A75
Lithography process 12 nanometers 12 nanometers
Graphics IMG PowerVR GE8320 Mali-G57 MP1
GPU clock 650 MHz 614 MHz
FLOPS ~41.8 GFLOPS -
Memory
RAM size 2 GB 3, 4 GB
Memory type LPDDR4X LPDDR4X
Memory clock 2133 MHz -
Channels 2 2
Storage
Storage size 32 GB 32, 64 GB
Storage type eMMC 5.1 UFS 2.2
Memory card MicroSD MicroSD
Memory card max. size Up to 256 GB Up to 1024 GB

Benchmarks

Geekbench 5 (Single-Core)
135
Realme C31 +155%
344
Geekbench 5 (Multi-Core)
466
Realme C31 +183%
1318
AnTuTu Benchmark 9
93412
Realme C31 +123%
208356
CPU 36605 67603
GPU 12376 22171
Memory 24580 61955
UX 20429 58129
Total score 93412 208356
3DMark Wild Life Performance
PCMark 3.0 score - 7589
Sources: 3DMark [3]

Software

Operating system Android 10 (Can be upgraded to Android 11) Android 11
ROM MIUI 12.5 Enhanced Realme UI 2.0
OS size 11 GB -

Battery

Specifications
Capacity 5000 mAh 5000 mAh
Charge power 10 W 10 W
Battery type Li-Po Li-Po
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging No No
Full charging time 2:55 hr 2:40 hr

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
Lenses 1 (13 MP) 3 (13 MP + 2 MP + 0.3 MP)
Wide (main) lens - 13 MP
- Aperture: f/2.2
- Focal length: 28 mm
- Pixel size: 1 micron
- Phase autofocus
- 13 MP
- Aperture: f/2.2
- Focal length: 25 mm
- Pixel size: 1.12 micron
- Sensor: 1/3" (CMOS)
- Phase autofocus
Macro lens - - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5" (CMOS)
Depth lens - - 0.3 MP
- Aperture: f/2.8
Camera features - - Bokeh mode
Selfie camera
Megapixels 5 megapixels 5 megapixels
Image resolution 2560 x 1960 2560 x 1960
Aperture f/2.2 f/2.2
Focal length - 27 mm
Pixel size 1.12 microns 1.12 microns
Sensor type CMOS CMOS
Sensor size - 1/5"
Video resolution 1080p (Full HD) at 30 FPS 720p at 30 FPS

Connectivity

Wi-Fi standard Wi-Fi 4 (802.11 a/b/g/n) Wi-Fi 4 (802.11 b/g/n)
Wi-Fi features - Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
- Wi-Fi Direct
- Wi-Fi Hotspot
Bluetooth version 5 5
Bluetooth features LE, HID, A2DP LE
USB type Micro USB Micro USB
USB version 2 2
USB features - Charging
- USB-Storage mode
- OTG
- Charging
- USB-Storage mode
GPS GPS, GLONASS, Beidou, Galileo GPS, GLONASS, Beidou, Galileo
NFC* No No
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* 4 -
5G support No No

Sound

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

Other

Category Budget Budget
Announced June 2020 March 2022
Release date August 2020 March 2022
SAR (head) 0.398 W/kg -
SAR (body) 0.901 W/kg -
Sensors - Proximity sensor
- Accelerometer
- Ambient light sensor
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- 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 Oppo Realme C31 is definitely a better buy.

Cast your vote

So, which phone would you choose?
4 (20%)
16 (80%)
Total votes: 20

User opinions

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