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Xiaomi Redmi Note 8 Pro vs Samsung Galaxy M21

Here we compared two smartphones: the 6.53-inch Xiaomi Redmi Note 8 Pro (with MediaTek Helio G90T) that was released on August 29, 2019, against the Samsung Galaxy M21, which is powered by Exynos 7 Octa 9611 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 Note 8 Pro
  • 56% better performance in AnTuTu Benchmark (287K versus 185K)
  • Slow-motion recording at 960FPS
  • Has 50% more RAM: 6GB versus 4GB
  • 40% faster in single-core GeekBench 5 test: 492 and 352 points
  • Has a built-in infrared port
Reasons to consider the Samsung Galaxy M21
  • Comes with 1500 mAh larger battery capacity: 6000 vs 4500 mAh
  • More recent OS version: Android 11 versus 10
  • Super AMOLED display (versus competitor's IPS LCD)
  • More energy-efficient CPU – Exynos 7 Octa 9611
  • 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

Display

Type IPS LCD Super AMOLED
Size 6.53 inches 6.4 inches
Resolution 1080 x 2340 pixels 1080 x 2340 pixels
Aspect ratio 19.5:9 19.5:9
PPI 395 ppi 403 ppi
Refresh rate 60 Hz 60 Hz
HDR support Yes, HDR10 No
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 3
Screen-to-body ratio 84.9% 84.2%
Display features - - Always-On Display
Display tests
RGB color space - 141.3%
PWM - 215 Hz
Response time - 9 ms
Contrast - ∞ Infinity
Max. Brightness
640 nits
622 nits
Sources: NotebookCheck [1]

Design and build

Height 161.4 mm (6.35 inches) 159 mm (6.26 inches)
Width 76.4 mm (3.01 inches) 75.1 mm (2.96 inches)
Thickness 8.8 mm (0.35 inches) 8.9 mm (0.35 inches)
Weight 200 gramm (7.05 oz) 188 gramm (6.63 oz)
Waterproof No No
Rear material Glass Plastic
Frame material Plastic Plastic
Colors White, Gray, Blue, Green Black, Blue, Green
Fingerprint scanner Yes, rear Yes, rear
Screen-to-body ratio
84.9%
84.2%

Performance

Tests of Xiaomi Redmi Note 8 Pro and Samsung Galaxy M21 in the benchmarks
SoC
Chipset MediaTek Helio G90T Samsung Exynos 7 Octa 9611
Max. clock 2050 MHz 2300 MHz
CPU cores 8 (2 + 6) 8 (4 + 4)
Architecture - 6 cores at 2 GHz: Cortex-A55
- 2 cores at 2.05 GHz: Cortex-A76
- 4 cores at 1.7 GHz: Cortex-A53
- 4 cores at 2.3 GHz: Cortex-A73
Lithography process 12 nanometers 10 nanometers
Graphics Mali-G76MC4 Mali-G72 MP3
GPU clock 800 MHz 850 MHz
FLOPS ~184 GFLOPS ~259 GFLOPS
Memory
RAM size 6 GB 4 GB
Memory type LPDDR4X LPDDR4X
Memory clock 2133 MHz 1866 MHz
Channels 2 2
Storage
Storage size 64, 128 GB 64 GB
Storage type UFS 2.1 UFS 2.1
Memory card MicroSD MicroSD
Memory card max. size Up to 512 GB Up to 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
1535
1358
AnTuTu Benchmark 8
287837
185081

Software

Operating system Android 9.0 (Can be upgraded to Android 10) Android 10.0 (Can be upgraded to Android 11.0)
ROM MIUI 12 One UI 3.1 Core
OS size - 14.5 GB

Battery

Specifications
Capacity 4500 mAh 6000 mAh
Charge power 18 W 15 W
Battery type Li-Ion Li-Ion
Replaceable No No
Wireless charging No No
Reverse charging No No
Fast charging Yes (30% in 30 min) Yes, Samsung Adaptive Fast Charge (25% in 30 min)
Full charging time 2:00 hr 2:35 hr

Battery life tests

Web browsing (Wi-Fi)
Watching videos (Player)
Talk (3G)

Camera

Specs and camera test of smartphones
Main camera
Matrix 64 megapixels 48 megapixels
Image resolution 9000 x 7000 8000 x 6000
Zoom Digital Digital
Flash LED LED
Stabilization Digital Digital
8K video recording No No
4K video recording Up to 30FPS Up to 30FPS
1080p video recording Up to 60FPS Up to 30FPS
Slow motion 960 FPS (720p) 240 FPS (720p)
Angle of widest lens 120° 123°
Lenses 4 (64 MP + 8 MP + 2 MP + 2 MP) 3 (48 MP + 8 MP + 5 MP)
Wide (main) lens - 64 MP
- Aperture: f/1.9
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/1.7", Samsung S5KGW1 (ISOCELL CMOS)
- Phase autofocus
- 48 MP
- Aperture: f/2.0
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2.0", Samsung S5KGM2 (ISOCELL CMOS)
- Phase autofocus
Ultra-wide lens - 8 MP
- Aperture: f/2.2
- Focal length: 13 mm
- Pixel size: 1.12 micron
- Sensor: 1/4" (CMOS)
- 8 MP
- Aperture: f/2.2
- Focal length: 12 mm
- Pixel size: 1.12 micron
- Sensor: 1/4.0" (CMOS)
Macro lens - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5" (CMOS)
-
Depth lens - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5" (CMOS)
- 5 MP
- Aperture: f/2.2
- Focal length: 25 mm
- Pixel size: 1.12 micron
- Sensor: 1/5.0" (CMOS)
Camera features - Bokeh mode
- Pro mode
- Bokeh mode
- Pro mode
Samples Photo samples of Xiaomi Redmi Note 8 Pro from DxOMark -
Selfie camera
Megapixels 20 megapixels 20 megapixels
Image resolution 5184 x 3880 5184 x 3888
Aperture f/2.0 f/2.0
Focal length - 26 mm
Pixel size 0.9 microns -
Sensor type ISOCELL CMOS CMOS
Sensor size 1/3.1" -
Video resolution 1080p (Full HD) при 30 FPS 1080p (Full HD) при 30 FPS

DxOMark camera tests

Photo quality
Video quality
Generic camera score

Connectivity

Wi-Fi standard Wi-Fi 5 (802.11 b/g/n/ac) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- 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 GPS, GLONASS, Beidou, Galileo
NFC* Yes Yes
Infrared port Yes No
Network
Number of SIM* 2 2
Type of SIM card Nano Nano
Multi SIM mode Standby Standby
eSIM support* No No
Hybrid slot Yes No
LTE Cat* 12 12
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
83.8 dB

Other

Category Mid-range Budget
Announced August 2019 March 2020
Release date October 2019 March 2020
Launch price ~ 225 USD ~ 200 USD
SAR (head) 0.38 W/kg 0.492 W/kg
SAR (body) 0.8 W/kg 1.13 W/kg
Sensors - Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
- Proximity sensor
- Gyroscope
- Accelerometer
- Ambient light sensor
- Compass
- Fingerprint
*Disclaimer! NFC, GSM network support, and some other specs can be different depending on the country.

Conclusion

If the performance and camera are more important to you, then choose the Xiaomi Redmi Note 8 Pro. But if the display, software, battery life, and sound are more of a priority – go for the Samsung Galaxy M21.

Cast your vote

So, which phone would you choose?
176 (46.1%)
206 (53.9%)
Total votes: 382

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