Samsung Galaxy A02 vs Xiaomi Redmi 9A

Compared 2 smartphones : Samsung Galaxy A02 Manufactured in January, 2021, with display 6.5 with chipsetMediatek MT6739W, vs Xiaomi Redmi 9A, Manufactured in August, 2020with chipsetMediaTek Helio G25. Below are specs, tests, pros and cons for each device

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy A02
  • Higher pixel density: 270ppi
  • Supports Dolby Atmos
  • Includes charger
Reasons to choose Xiaomi Redmi 9A
  • Larger display: 6.53in
  • Lighter design: 194g vs 206g

Versions

Available versions and configurations
Memory Options - 2/32 GB
- 3/32 GB
- 3/64 GB
- 4/32 GB
- 2/32 GB
- 3/32 GB
- 4/64 GB
- 4/128 GB
- 6/128 GB

Review

Key Specs Samsung Galaxy A02 and Xiaomi Redmi 9A
Display
Color accuracy, sharpness & brightness
Camera
Main & front camera tests
Performance
App & system performance
Games
3D gaming performance
Battery
Battery life, charging speed & type
Connectivity
Connectivity features
NanoReview Score
Overall score by NanoReview
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Function
Importance (Weight)
Display:
Camera:
Performance:
Gaming:
Battery:
Connectivity:
Higher weight means greater impact on NanoReview score.

Tests & specs

Specs & test comparison

Display

Display quality comparison
Type PLS TFT IPS LCD
Size 6.5 in 6.53 in
Resolution 720x1600 pixels 720x1600 pixels
Aspect ratio 20:9 20:9
Pixel density 270 ppi 269 ppi
Refresh rate 60 Hz 60 Hz
Adaptive refresh rate No No
Max brightness n/a 400 nits
HDR support No No
Screen-to-body ratio 82 % 81.1 %
Display test
Peak brightness (auto)
Samsung Galaxy A02
n/a
Xiaomi Redmi 9A
434 nits
sRGB gamutn/a92.9 %
Response timen/a40 ms
Contrastn/a1318:1

Design & Build

Design and ergonomics comparison
Height 164 mm (6.46 in) 164.9 mm (6.49 in)
Width 75.9 mm (2.99 in) 77 mm (3.03 in)
Thickness 9.1 mm (0.36 in) 9 mm (0.35 in)
Weight 206 g (7.27 oz) 194 g (6.84 oz)
Water resistance No No
Back panel Plastic Plastic
Frame Plastic Plastic
Colors - Black
- Blue
- Red
- Gray
- Blue
- Green
Fingerprint sensor No No
Screen-to-body ratio
Samsung Galaxy A02
82 %
Xiaomi Redmi 9A
81.1 %

Performance

Testing Samsung Galaxy A02 and Xiaomi Redmi 9A In benchmarks
Processor
Chipset Mediatek MT6739W MediaTek Helio G25
Max Frequency 1500 MHz 2000 MHz
CPU Cores 4 (4) 8 (4 + 4)
Architecture 4/1.5 (Cortex-A53) - 4/1.5 (Cortex-A53)
- 4/2 (Cortex-A53)
Process TSMC TSMC
Transistor Size 28 nm 12 nm
Neural Processor No No
Graphics PowerVR GE8100 PowerVR GE8320
GPU Cores 8 32
GPU Frequency 570 MHz 650 MHz
FLOPS 9.1 GFLOPS 41.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A02
470
Xiaomi Redmi 9A
472
Geekbench 6 (Multi-Core)
Samsung Galaxy A02
1525
Xiaomi Redmi 9A
1524
Geekbench 6 (Single-Core)470472
Geekbench 6 (Multi-Core)15251524
AnTuTu 10
AnTuTu 10
Samsung Galaxy A02
131372
Xiaomi Redmi 9A
125125
CPU5028650728
GPU659116844
Memory3453828611
UX3995728942
NanoReview Score131372125125

Memory

RAM
RAM Size 2 GB - 2 GB
- 4 GB
- 6 GB
Memory Type LPDDR3 LPDDR4X
Memory Frequency 933 MHz 1600 MHz
Channels 1 2
Storage
Storage Capacity32 GB- 32 GB
- 64 GB
- 128 GB
Storage TypeeMMC 5.1eMMC 5.1
Memory CardMicroSDMicroSD

Software

OS Android 10 (Upgradeable to Android 11) Android 10 (Upgradeable to Android 11)
OS Size 9.4 GB 11 GB
UI Skin One UI Core 3.1 MIUI 12.5 Enhanced

Battery

Volume 5000 mAh 5000 mAh
Max Charging Power n/a 10 W
Battery Type Li-ion Li-Po
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging No No
Full Charge Time n/a 2:55 h
Battery Life Test
Battery Life
Samsung Galaxy A02
n/a
Xiaomi Redmi 9A
24:07
Web Browsingn/a10:08 h
Video Playbackn/a13:37 h
Gamesn/a05:37 h
Standby Moden/a118 h

Main camera

Matrix 13 MP 13 MP
Photo resolution 4128x3096 pixels 4128x3096 pixels
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording No No
1080p Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
Slow Motion No No
Lenses count Standard: 13 MP
Macro: 2 MP
Standard: 13 MP
Features Bokeh effect
Main lens
Matrix13 MP13 MP
Aperturef/1.9f/2.2
Focal lengthn/a28 mm
Pixel size1.12 μm1 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital

Front camera

Matrix 5 MP 5 MP
Photo resolution 2560x1960 pixels 2560x1960 pixels
Aperture f/2.0 f/2.2
Sensor CMOS CMOS
Pixel size n/a 1.12 μm
Autofocus No No
Stabilization No Digital
Video resolution 1080p (Full HD) at 30 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 4 (802.11 a/b/g/n) Wi-Fi 4 (802.11 a/b/g/n)
Wi-Fi features - Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features LE, A2DP LE, HID, A2DP
USB type Micro USB Micro USB
USB version 2 2
USB features - Charging
- USB Storage Mode
- Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- GPS
- GLONASS
- Beidou
- Galileo
NFC* No No
Infrared Port No No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM850, GSM900, DCS1800GSM B2/3/5/8
3G BandsUMTS B1 (2100), B5(850), B8 (900)WCDMA B1/2/4/5/8
LTE Bands*LTE (B1/B3/B5/B7/B8/B20/B38/B40/B41)LTE (B1/B2/B3/B4/B5/B7/B8/B20/B28)
LTE category44
5G SupportNoNo

Sound

Speakers Mono Mono
3.5 mm Jack Yes Yes
FM Radio Yes Yes
Dolby Atmos Yes No
Speaker Test
Max Volume
Samsung Galaxy A02
n/a
Xiaomi Redmi 9A
76.5 dB

Other

Class Budget Budget
Announced January, 2021 yr June, 2020 yr
Release Date January, 2021 yr August, 2020 yr
Launch Price ($) 100 100
Sensors - Proximity Sensor
- Accelerometer
- Ambient Light Sensor
- Proximity Sensor
- Accelerometer
- Ambient Light Sensor
Charger Included Yes 10 W n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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