Home Phone comparison Xiaomi Redmi 9 and Samsung Galaxy M21 - Which is better?

Xiaomi Redmi 9 vs Samsung Galaxy M21

42 out 100
Xiaomi Redmi 9
VS
45 out 100
Samsung Galaxy M21
Xiaomi Redmi 9
Samsung Galaxy M21

Compared 2 smartphones : Xiaomi Redmi 9 Manufactured in July, 2020, with display 6.53 with chipsetMediaTek Helio G80, vs Samsung Galaxy M21, Manufactured in March, 2020with chipsetSamsung Exynos 7 Octa 9611. 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 Xiaomi Redmi 9
  • Larger display: 6.53in
  • Infrared port
  • Includes charger
Reasons to choose Samsung Galaxy M21
  • Higher pixel density: 403ppi
  • Lighter design: 188g vs 198g
  • Higher battery capacity: 6000mAh vs 5020mAh
  • Supports Dolby Atmos

Versions

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

Review

Key Specs Xiaomi Redmi 9 and Samsung Galaxy M21
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
Smartphones:
Xiaomi Redmi 9
vs
Samsung Galaxy M21

Display

Display quality comparison
Type IPS LCD Super AMOLED
Size 6.53 in 6.4 in
Resolution 1080x2340 pixels 1080x2340 pixels
Aspect ratio 19.5:9 19.5:9
Pixel density 395 ppi 403 ppi
Refresh rate 60 Hz 60 Hz
Adaptive refresh rate No No
Max brightness 400 nits 630 nits
HDR support No No
Screen-to-body ratio 83.2 % 84.2 %
Features n/a Always-On Display
Display test
Peak brightness (auto)
Xiaomi Redmi 9
423 nits
Samsung Galaxy M21
608 nits
sRGB gamut93 %141.3 %
PWM (Flicker)500 Hz215 Hz
Response time35 ms9 ms
Contrast710:1∞ Infinite
Sources: NotebookCheck [Xiaomi Redmi 9], [Samsung Galaxy M21]

Design & Build

Design and ergonomics comparison
Height 163.3 mm (6.43 in) 159 mm (6.26 in)
Width 77 mm (3.03 in) 75.1 mm (2.96 in)
Thickness 9.1 mm (0.36 in) 8.9 mm (0.35 in)
Weight 198 g (6.98 oz) 188 g (6.63 oz)
Water resistance No No
Back panel Plastic Plastic
Frame Plastic Plastic
Colors - Gray
- Green
- Purple		 - Black
- Blue
- Green
Fingerprint sensor Yes rear Yes rear
Screen-to-body ratio
Xiaomi Redmi 9
83.2 %
Samsung Galaxy M21
84.2 %

Performance

Testing Xiaomi Redmi 9 and Samsung Galaxy M21 In benchmarks
Processor
Chipset MediaTek Helio G80 Samsung Exynos 7 Octa 9611
Max Frequency 2000 MHz 2300 MHz
CPU Cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6/1.8 (Cortex-A55)
- 2/2 (Cortex-A75)		 - 4/1.7 (Cortex-A53)
- 4/2.3 (Cortex-A73)
Process TSMC Samsung
Transistor Size 12 nm 10 nm
Neural Processor Yes Yes
Graphics Mali-G52 MP2 Mali-G72 MP3
GPU Cores 48 54
GPU Frequency 950 MHz 850 MHz
FLOPS 91.2 GFLOPS 113.8 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Xiaomi Redmi 9
514
Samsung Galaxy M21
514
Geekbench 6 (Multi-Core)
Xiaomi Redmi 9
1559
Samsung Galaxy M21
1558
Geekbench 6 (Single-Core)514514
Geekbench 6 (Multi-Core)15591558
AnTuTu 10
AnTuTu 10
Xiaomi Redmi 9
263655
Samsung Galaxy M21
266455
CPU9363476468
GPU3888345756
Memory6298370269
UX6815573962
NanoReview Score263655266455
3DMark Wild Life
3DMark Wild Life
Xiaomi Redmi 9
664
Samsung Galaxy M21
816
Max Surface Temp.47 °C44.1 °C
Stability98 %73 %
Graphics Test3 fps4 fps
Graphics Score664816
Sources: 3DMark [Xiaomi Redmi 9], [Samsung Galaxy M21]
PCMark 3.0
PCMark 3.0
Xiaomi Redmi 9
8330
Samsung Galaxy M21
n/a
Writing score9134n/a
Web score7371n/a
Video editing5562n/a
Data manipulation6064n/a
NanoReview Score8330n/a

Memory

RAM
RAM Size - 3 GB
- 4 GB
- 6 GB		 - 4 GB
- 6 GB
Memory Type LPDDR4X LPDDR4X
Memory Frequency 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage Capacity- 32 GB
- 64 GB
- 128 GB		- 64 GB
- 128 GB
Storage TypeeMMC 5.1UFS 2.1
Memory CardMicroSDMicroSD

Software

OS Android 10 (Upgradeable to Android 12) Android 10.0 (Upgradeable to Android 12.0)
OS Size 13 GB 14.5 GB
UI Skin MIUI 13 One Ui 4.1

Battery

Volume 5020 mAh 6000 mAh
Max Charging Power 18 W 15 W
Battery Type Li-Po Li-ion
Removable No No
Wireless Charging No No
Reverse Charging No No
Fast Charging Yes (50% in 80 min) Yes Samsung Adaptive Fast Charge (25% in 30 min)
Full Charge Time 3:05 h 2:35 h
Battery Life Test
Battery Life
Xiaomi Redmi 9
22:51
Samsung Galaxy M21
24:03
Web Browsing08:45 h10:07 h
Video Playback13:56 h13:59 h
Games05:30 h05:35 h
Standby Mode113 h115 h

Main camera

Matrix 13 MP 48 MP
Photo resolution 4128x3096 pixels 8000x6000 pixels
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K Recording No No
4K Recording No Yes (Up to 30 fps)
1080p Recording Yes (Up to 30 fps) Yes (Up to 30 fps)
Slow Motion 120 fps (720p) 240 fps (720p)
Wide-angle lens 118 ° 123 °
Lenses count Standard: 13 MP
Ultra-wide: 8 MP
Macro: 5 MP
Depth: 2 MP		 Standard: 48 MP
Ultra-wide: 8 MP
Depth: 5 MP
Features - Bokeh effect
- Pro mode		 - Bokeh effect
- Pro mode
Main lens
Matrix13 MP48 MP
Aperturef/2.2f/2.0
Focal length28 mm26 mm
SensorOmnivision OV13B10Samsung S5KGM2
Sensor size1/3.11/2.0
Pixel size1.12 μm0.8 μm
AutofocusPhase autofocusPhase autofocus
StabilizationDigitalDigital
Ultra-wide lens
Matrix8 MP8 MP
Aperturef/2.2f/2.2
Focal length13 mm12 mm
SensorOmniVision OV8856n/a
Sensor size1/4.01/4.0
Pixel size1.12 μm1.12 μm
StabilizationDigitalDigital

Front camera

Matrix 8 MP 20 MP
Photo resolution 3264x2448 pixels 5184x3888 pixels
Aperture f/2.0 f/2.0
Focal length 27 mm 26 mm
Sensor CMOS CMOS
Sensor size 1/4.0 n/a
Autofocus No No
Stabilization Digital 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 5 (802.11 a/b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Dual Band
- Wi-Fi Direct
- Wi-Fi Hotspot
Bluetooth version 5 5
Bluetooth features LE, HID, A2DP PBAP/PAB, PAN, OPP, MAP, HSP, HID, HFP, DIP, AVRCP, A2DP
USB type USB Type-C USB Type-C
USB version 2 2
USB features - Charging
- USB Storage Mode
- OTG		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Yes
Infrared Port Yes No
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *NoNo
Hybrid SlotNoNo
2G BandsGSM B2/3/5/8GSM850, GSM900, DCS1800, PCS1900
3G BandsHSDPA B1/2/4/5/8B1 (2100), B2 (1900), B5(850), B8 (900)
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B20/B28)LTE (B1/B3/B5/B7/B8/B20/B38/B40/B41)
LTE category712
5G SupportNoNo

Sound

Speakers Mono Mono
3.5 mm Jack Yes Yes
FM Radio Yes Yes
Dolby Atmos No Yes
Speaker Test
Max Volume
Xiaomi Redmi 9
83.7 dB
Samsung Galaxy M21
83.8 dB

Other

Class Budget Mid-range
Announced June, 2020 yr March, 2020 yr
Release Date July, 2020 yr March, 2020 yr
Launch Price ($) 130 210
Sensors - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
Charger Included Yes 10 W n/a
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

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