Home Phone comparison Samsung Galaxy A02 and Xiaomi Redmi 9 - Which is better?

Samsung Galaxy A02 vs Xiaomi Redmi 9

33 out 100
Samsung Galaxy A02
VS
42 out 100
Xiaomi Redmi 9
Samsung Galaxy A02
Xiaomi Redmi 9

Compared 2 smartphones : Samsung Galaxy A02 Manufactured in January, 2021, with display 6.5 with chipsetMediatek MT6739W, vs Xiaomi Redmi 9, Manufactured in July, 2020with chipsetMediaTek Helio G80. Below are specs, tests, pros and cons for each device

  1. Differences
  2. Review
  3. Specs
  4. Benchmarks
  5. Battery Life
  6. Cameras
  7. Comments (0)

Key Differences

Device key advantages
Reasons to choose Samsung Galaxy A02
  • Supports Dolby Atmos
Reasons to choose Xiaomi Redmi 9
  • Larger display: 6.53in
  • Higher pixel density: 395ppi
  • Lighter design: 198g vs 206g
  • Higher battery capacity: 5020mAh vs 5000mAh
  • Infrared port
  • Fingerprint scanner

Versions

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

Review

Key Specs Samsung Galaxy A02 and Xiaomi Redmi 9
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
Adjust each parameter’s importance to find the best match for you.
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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
Smartphones:
Samsung Galaxy A02
vs
Xiaomi Redmi 9

Display

Display quality comparison
Type PLS TFT IPS LCD
Size 6.5 in 6.53 in
Resolution 720x1600 pixels 1080x2340 pixels
Aspect ratio 20:9 19.5:9
Pixel density 270 ppi 395 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 % 83.2 %
Display test
Peak brightness (auto)
Samsung Galaxy A02
n/a
Xiaomi Redmi 9
423 nits
sRGB gamutn/a93 %
PWM (Flicker)n/a500 Hz
Response timen/a35 ms
Contrastn/a710:1
Sources: NotebookCheck [Xiaomi Redmi 9]

Design & Build

Design and ergonomics comparison
Height 164 mm (6.46 in) 163.3 mm (6.43 in)
Width 75.9 mm (2.99 in) 77 mm (3.03 in)
Thickness 9.1 mm (0.36 in) 9.1 mm (0.36 in)
Weight 206 g (7.27 oz) 198 g (6.98 oz)
Water resistance No No
Back panel Plastic Plastic
Frame Plastic Plastic
Colors - Black
- Blue
- Red		 - Gray
- Green
- Purple
Fingerprint sensor No Yes rear
Screen-to-body ratio
Samsung Galaxy A02
82 %
Xiaomi Redmi 9
83.2 %

Performance

Testing Samsung Galaxy A02 and Xiaomi Redmi 9 In benchmarks
Processor
Chipset Mediatek MT6739W MediaTek Helio G80
Max Frequency 1500 MHz 2000 MHz
CPU Cores 4 (4) 8 (2 + 6)
Architecture 4/1.5 (Cortex-A53) - 6/1.8 (Cortex-A55)
- 2/2 (Cortex-A75)
Process TSMC TSMC
Transistor Size 28 nm 12 nm
Neural Processor No Yes
Graphics PowerVR GE8100 Mali-G52 MP2
GPU Cores 8 48
GPU Frequency 570 MHz 950 MHz
FLOPS 9.1 GFLOPS 91.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy A02
470
Xiaomi Redmi 9
514
Geekbench 6 (Multi-Core)
Samsung Galaxy A02
1525
Xiaomi Redmi 9
1559
Geekbench 6 (Single-Core)470514
Geekbench 6 (Multi-Core)15251559
AnTuTu 10
AnTuTu 10
Samsung Galaxy A02
131372
Xiaomi Redmi 9
263655
CPU5028693634
GPU659138883
Memory3453862983
UX3995768155
NanoReview Score131372263655
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy A02
n/a
Xiaomi Redmi 9
664
Max Surface Temp.n/a47 °C
Stabilityn/a98 %
Graphics Testn/a3 fps
Graphics Scoren/a664
Sources: 3DMark [Xiaomi Redmi 9]
PCMark 3.0
PCMark 3.0
Samsung Galaxy A02
n/a
Xiaomi Redmi 9
8330
Writing scoren/a9134
Web scoren/a7371
Video editingn/a5562
Data manipulationn/a6064
NanoReview Scoren/a8330

Memory

RAM
RAM Size 2 GB - 3 GB
- 4 GB
- 6 GB
Memory Type LPDDR3 LPDDR4X
Memory Frequency 933 MHz 1866 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 12)
OS Size 9.4 GB 13 GB
UI Skin One UI Core 3.1 MIUI 13

Battery

Volume 5000 mAh 5020 mAh
Max Charging Power n/a 18 W
Battery Type Li-ion Li-Po
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging No Yes (50% in 80 min)
Full Charge Time n/a 3:05 h
Battery Life Test
Battery Life
Samsung Galaxy A02
n/a
Xiaomi Redmi 9
22:51
Web Browsingn/a08:45 h
Video Playbackn/a13:56 h
Gamesn/a05:30 h
Standby Moden/a113 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 120 fps (720p)
Wide-angle lens n/a 118 °
Lenses count Standard: 13 MP
Macro: 2 MP		 Standard: 13 MP
Ultra-wide: 8 MP
Macro: 5 MP
Depth: 2 MP
Features Bokeh effect - Bokeh effect
- Pro mode
Main lens
Matrix13 MP13 MP
Aperturef/1.9f/2.2
Focal lengthn/a28 mm
Sensorn/aOmnivision OV13B10
Sensor sizen/a1/3.1
Pixel size1.12 μm1.12 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrixn/a8 MP
Aperturen/af/2.2
Focal lengthn/a13 mm
Sensorn/aOmniVision OV8856
Sensor sizen/a1/4.0
Pixel sizen/a1.12 μm
Stabilizationn/aDigital

Front camera

Matrix 5 MP 8 MP
Photo resolution 2560x1960 pixels 3264x2448 pixels
Aperture f/2.0 f/2.0
Focal length n/a 27 mm
Sensor CMOS CMOS
Sensor size n/a 1/4.0
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 5 (802.11 a/b/g/n/ac)
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 USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* No Yes
Infrared Port No Yes
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)HSDPA 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 category47
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 9
83.7 dB

Other

Class Budget Budget
Announced January, 2021 yr June, 2020 yr
Release Date January, 2021 yr July, 2020 yr
Launch Price ($) 100 130
Sensors - Proximity Sensor
- Accelerometer
- Ambient Light Sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes 10 W Yes 10 W
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

No clear favorite identified yet; updates may follow as new data arrives.

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