Xiaomi Redmi 9A vs Samsung Galaxy A02

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 Samsung Galaxy A02, which is powered by Mediatek MT6739W and came out 7 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
  • 41% better performance in AnTuTu Benchmark (94K versus 67K)
  • Uses a faster type of memory: LPDDR4X 2133 MHz
  • More energy-efficient CPU – MediaTek Helio G25
  • CPU with a higher amount of cores (+4)
  • 28% faster in single-core GeekBench 5 test: 136 and 106 points
Reasons to consider the Samsung Galaxy A02
  • Supports Dolby Atmos sound technology
  • The phone is 7-months newer

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 PLS TFT
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 -
HDR support No No
Screen protection Tempered glass Corning Gorilla Glass 3
Screen-to-body ratio 81.1% 81.9%
Display tests
RGB color space 92.9% -
Response time 40 ms -
Contrast 1318:1 -
Peak brightness test (auto)
439 nits
Sources: NotebookCheck [3]

Design and build

Height 164.9 mm (6.49 inches) 164 mm (6.46 inches)
Width 77 mm (3.03 inches) 75.9 mm (2.99 inches)
Thickness 9 mm (0.35 inches) 9.1 mm (0.36 inches)
Weight 194 gramm (6.84 oz) 206 gramm (7.27 oz)
Waterproof No No
Rear material Plastic Plastic
Frame material Plastic Plastic
Colors Gray, Blue, Green Black, Blue, Red
Fingerprint scanner No No
Screen-to-body ratio
81.1%
81.9%

Performance

Tests of Xiaomi Redmi 9A and Samsung Galaxy A02 in the benchmarks
SoC
Chipset MediaTek Helio G25 Mediatek MT6739W
Max. clock 2000 MHz 1500 MHz
CPU cores 8 (4 + 4) 4 (4)
Architecture - 4 cores at 1.5 GHz: Cortex-A53
- 4 cores at 2 GHz: Cortex-A53
- 4 cores at 1.5 GHz: Cortex-A53
Lithography process 12 nanometers 28 nanometers
Graphics IMG PowerVR GE8320 PowerVR GE8100
GPU clock 650 MHz 570 MHz
FLOPS ~41.8 GFLOPS ~21 GFLOPS
Memory
RAM size 2 GB 2 GB
Memory type LPDDR4X LPDDR3
Memory clock 2133 MHz 933 MHz
Channels 2 1
Storage
Storage size 32 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 1024 GB

Benchmarks

Geekbench 5 (Single-Core)
Redmi 9A +28%
136
Geekbench 5 (Multi-Core)
Redmi 9A +16%
469
AnTuTu Benchmark 9
Redmi 9A +41%
94604
67053
CPU 36605 22242
GPU 12376 2843
Memory 24580 21450
UX 20429 19920
Total score 94604 67053

Software

Operating system Android 10 (Can be upgraded to Android 11) Android 10 (Can be upgraded to Android 11)
ROM MIUI 12.5 Enhanced One UI Core 3.1
OS size 11 GB 9.4 GB

Battery

Specifications
Capacity 5000 mAh 5000 mAh
Charge power 10 W -
Battery type Li-Po Li-Ion
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging No No
Full charging time 2:55 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) 2 (13 MP + 2 MP)
Wide (main) lens - 13 MP
- Aperture: f/2.2
- Focal length: 28 mm
- Pixel size: 1 micron
- Phase autofocus
- 13 MP
- Aperture: f/1.9
- Phase autofocus
Macro lens - - 2 MP
- Aperture: f/2.4
Camera features - - Bokeh mode
Selfie camera
Megapixels 5 megapixels 5 megapixels
Image resolution 2560 x 1960 2560 x 1960
Aperture f/2.2 f/2.0
Pixel size 1.12 microns -
Sensor type CMOS CMOS
Video resolution 1080p (Full HD) at 30 FPS 1080p (Full HD) 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, A2DP
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
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 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
76.5 dB

Other

Category Budget Budget
Announced June 2020 January 2021
Release date August 2020 January 2021
SAR (head) 0.398 W/kg 0.65 W/kg
SAR (body) 0.901 W/kg 1.71 W/kg
Sensors - Proximity sensor
- Accelerometer
- Ambient light sensor
- Proximity sensor
- Accelerometer
- Ambient light sensor
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

If the performance is more important to you, then choose the Xiaomi Redmi 9A. But if the display, camera, design, and sound are more of a priority – go for the Samsung Galaxy A02.

Cast your vote

So, which phone would you choose?
229 (73.9%)
81 (26.1%)
Total votes: 310

User opinions

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