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Xiaomi Redmi Note 8T vs Samsung Galaxy M21

Here we compared two smartphones: the 6.3-inch Xiaomi Redmi Note 8T (with Qualcomm Snapdragon 665) that was released on November 6, 2019, against the Samsung Galaxy M21, which is powered by Exynos 7 Octa 9611 and came out 5 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 8T
  • Has a built-in infrared port
Reasons to consider the Samsung Galaxy M21
  • Comes with 2000 mAh larger battery capacity: 6000 vs 4000 mAh
  • More recent OS version: Android 11 versus 10
  • Super AMOLED display (versus competitor's IPS LCD)
  • Faster storage type - UFS 2.1 versus eMMC 5.1
  • Supports Dolby Atmos sound technology
  • 12% faster in single-core GeekBench 5 test: 352 and 315 points

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 6.3 inches 6.4 inches
Resolution 1080 x 2340 pixels 1080 x 2340 pixels
Aspect ratio 19.5:9 19.5:9
PPI 409 ppi 403 ppi
Refresh rate 60 Hz 60 Hz
HDR support No No
Screen protection Corning Gorilla Glass 5 Corning Gorilla Glass 3
Screen-to-body ratio 80.2% 84.2%
Display features - - Always-On Display
Display tests
RGB color space 99.3% 141.3%
PWM Not detected 215 Hz
Response time 46.4 ms 9 ms
Contrast 1163:1 ∞ Infinity
Max. Brightness
610 nits
622 nits
Sources: NotebookCheck [1], [2]

Design and build

Height 161.1 mm (6.34 inches) 159 mm (6.26 inches)
Width 75.4 mm (2.97 inches) 75.1 mm (2.96 inches)
Thickness 8.6 mm (0.34 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 Black, Blue, Green
Fingerprint scanner Yes, rear Yes, rear
Screen-to-body ratio
84.2%

Performance

Tests of Xiaomi Redmi Note 8T and Samsung Galaxy M21 in the benchmarks
SoC
Chipset Qualcomm Snapdragon 665 Samsung Exynos 7 Octa 9611
Max. clock 2000 MHz 2300 MHz
CPU cores 8 (4 + 4) 8 (4 + 4)
Architecture - 4 cores at 1.8 GHz: Kryo 260 Silver (Cortex-A53)
- 4 cores at 2.2 GHz: Kryo 260 Gold (Cortex-A73)
- 4 cores at 1.7 GHz: Cortex-A53
- 4 cores at 2.3 GHz: Cortex-A73
Lithography process 11 nanometers 10 nanometers
Graphics Adreno 610 Mali-G72 MP3
GPU clock 600 MHz 850 MHz
FLOPS ~273 GFLOPS ~259 GFLOPS
Memory
RAM size 3, 4 GB 4 GB
Memory type LPDDR4X LPDDR4X
Memory clock 1866 MHz 1866 MHz
Channels 2 2
Storage
Storage size 32, 64 GB 64 GB
Storage type eMMC 5.1 UFS 2.1
Memory card MicroSD MicroSD
Memory card max. size Up to 256 GB Up to 512 GB

Benchmarks

Geekbench 5 (Single-Core)
Galaxy M21 +12%
352
Geekbench 5 (Multi-Core)
1374
1358
AnTuTu Benchmark 8
170103
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 8 GB 14.5 GB

Battery

Specifications
Capacity 4000 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 (50% in 35 min) Yes, Samsung Adaptive Fast Charge (25% in 30 min)
Full charging time 2:05 hr 2:35 hr

Battery life tests

Web browsing (Wi-Fi)
14:50 hr
Watching videos (Player)
14:29 hr
Talk (3G)
27:19 hr

Camera

Specs and camera test of smartphones
Main camera
Matrix 48 megapixels 48 megapixels
Image resolution 8000 x 6000 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 240 FPS (720p) 240 FPS (720p)
Angle of widest lens 120° 123°
Lenses 4 (48 MP + 8 MP + 2 MP + 2 MP) 3 (48 MP + 8 MP + 5 MP)
Wide (main) lens - 48 MP
- Aperture: f/1.8
- Focal length: 26 mm
- Pixel size: 0.8 micron
- Sensor: 1/2", Samsung S5KGM1 (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", Omnivision OV8856 (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", Omnivision OV02A10 (CMOS)
-
Depth lens - 2 MP
- Aperture: f/2.4
- Pixel size: 1.75 micron
- Sensor: 1/5", Omnivision OV02A10 (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
Selfie camera
Megapixels 13 megapixels 20 megapixels
Image resolution 4224 x 3136 5184 x 3888
Aperture f/2.0 f/2.0
Focal length 28.21 mm 26 mm
Pixel size 1.12 microns -
Sensor type CMOS CMOS
Sensor size 1/2.9" -
Video resolution 1080p (Full HD) при 30 FPS 1080p (Full HD) при 30 FPS

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 No 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
87.9 dB
83.8 dB

Other

Category Mid-range Budget
Announced November 2019 March 2020
Release date December 2019 March 2020
Launch price ~ 187 USD ~ 200 USD
SAR (head) 0.74 W/kg 0.492 W/kg
SAR (body) 1.3 W/kg 1.13 W/kg
Sensors - Barometer
- 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

After analyzing all the data, we think that the Samsung Galaxy M21 is definitely a better buy.

Cast your vote

So, which phone would you choose?
52 (28.1%)
133 (71.9%)
Total votes: 185

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