Home Phone comparison Samsung Galaxy S21 and Xiaomi Redmi 9T - Which is better?

Samsung Galaxy S21 vs Xiaomi Redmi 9T

65 out 100
Samsung Galaxy S21
VS
46 out 100
Xiaomi Redmi 9T
Samsung Galaxy S21
Xiaomi Redmi 9T

Compared 2 smartphones : Samsung Galaxy S21 Manufactured in February, 2021, with display 6.2 with chipsetSamsung Exynos 2100, vs Xiaomi Redmi 9T, Manufactured in January, 2021with chipsetQualcomm Snapdragon 662. 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 S21
  • Higher pixel density: 421ppi
  • Higher refresh rate: 120Hz
  • Lighter design: 169g vs 198g
  • Supports newer USB: 3.2 vs 2
  • Supports Dolby Atmos
  • Built-in eSIM
Reasons to choose Xiaomi Redmi 9T
  • Larger display: 6.53in
  • Higher battery capacity: 6000mAh vs 4000mAh
  • Infrared port

Versions

Available versions and configurations
Memory Options - 8/128 GB
- 8/256 GB		 - 4/64 GB
- 4/128 GB
- 6/128 GB

Review

Key Specs Samsung Galaxy S21 and Xiaomi Redmi 9T
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.
Customize your score
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 S21
vs
Xiaomi Redmi 9T

Display

Display quality comparison
Type Dynamic AMOLED IPS LCD
Size 6.2 in 6.53 in
Resolution 1080x2400 pixels 1080x2340 pixels
Aspect ratio 20:9 19.5:9
Pixel density 421 ppi 395 ppi
Refresh rate 120 Hz 60 Hz
Adaptive refresh rate Yes (48-120 Hz) No
Max brightness 800 nits 400 nits
HDR support Yes HDR10+ No
Screen-to-body ratio 85.9 % 83.4 %
Features - DCI-P3
- Always-On Display		 n/a
Display test
Peak brightness (auto)
Samsung Galaxy S21
854 nits
Xiaomi Redmi 9T
436 nits
sRGB gamut99.5 %96.4 %
PWM (Flicker)240 Hz880 Hz
Response time5 ms42 ms
Contrast∞ Infinite1868:1
Sources: NotebookCheck [Samsung Galaxy S21], [Xiaomi Redmi 9T]

Design & Build

Design and ergonomics comparison
Height 151.7 mm (5.97 in) 162.3 mm (6.39 in)
Width 71.2 mm (2.8 in) 77.3 mm (3.04 in)
Thickness 7.9 mm (0.31 in) 9.6 mm (0.38 in)
Weight 169 g (5.96 oz) 198 g (6.98 oz)
Water resistance IP68 No
Back panel Plastic Plastic
Frame Metal Plastic
Colors - White
- Gray
- Pink
- Purple		 - Gray
- Blue
- Green
- Orange
Fingerprint sensor Yes In-Display Yes In-Button
Screen-to-body ratio
Samsung Galaxy S21
85.9 %
Xiaomi Redmi 9T
83.4 %

Performance

Testing Samsung Galaxy S21 and Xiaomi Redmi 9T In benchmarks
Processor
Chipset Samsung Exynos 2100 Qualcomm Snapdragon 662
Max Frequency 2900 MHz 2000 MHz
CPU Cores 8 (1 + 3 + 4) 8 (4 + 4)
Architecture - 4/2.2 (Cortex-A55)
- 3/2.81 (Cortex-A78)
- 1/2.91 (Cortex-X1)		 - 4/1.8 (Kryo 260 Silver (Cortex-A53))
- 4/2 (Kryo 260 Gold (Cortex-A73))
Process Samsung Samsung
Transistor Size 5 nm 11 nm
Neural Processor Yes Hexagon 683
Graphics Mali-G78 MP14 Adreno 610
GPU Cores 896 128
GPU Frequency 854 MHz 950 MHz
FLOPS 1530.4 GFLOPS 243.2 GFLOPS
GeekBench v6
Geekbench 6 (Single-Core)
Samsung Galaxy S21
1331
Xiaomi Redmi 9T
511
Geekbench 6 (Multi-Core)
Samsung Galaxy S21
3593
Xiaomi Redmi 9T
1551
Geekbench 6 (Single-Core)1331511
Geekbench 6 (Multi-Core)35931551
AnTuTu 10
AnTuTu 10
Samsung Galaxy S21
903780
Xiaomi Redmi 9T
247218
CPU25339189386
GPU28167634918
Memory15835260894
UX21036161570
NanoReview Score903780247218
3DMark Wild Life
3DMark Wild Life
Samsung Galaxy S21
5715
Xiaomi Redmi 9T
373
Max Surface Temp.38.9 °C45.3 °C
Stability66 %99 %
Graphics Test34 fps2 fps
Graphics Score5715373
Sources: 3DMark [Samsung Galaxy S21], [Xiaomi Redmi 9T]
PCMark 3.0
PCMark 3.0
Samsung Galaxy S21
13123
Xiaomi Redmi 9T
6197
Writing score161016932
Web score119095529
Video editing70973683
Data manipulation101535170
NanoReview Score131236197

Memory

RAM
RAM Size 8 GB - 4 GB
- 6 GB
Memory Type LPDDR5 LPDDR4X
Memory Frequency 2750 MHz 1800 MHz
Channels 2 2
Storage
Storage Capacity- 128 GB
- 256 GB		- 64 GB
- 128 GB
Storage TypeUFS 3.1UFS 2.2
Memory CardNoMicroSD

Software

OS Android 11 (Upgradeable to Android 14) Android 10 (Upgradeable to Android 12)
OS Size 28.1 GB 21 GB
UI Skin One UI 6.0 MIUI 14

Battery

Volume 4000 mAh 6000 mAh
Max Charging Power 25 W 18 W
Battery Type Li-ion Li-Po
Removable No No
Wireless Charging Yes (15 W) No
Reverse Charging Yes (Wireless) Yes
Fast Charging Yes (55% in 50 min) Yes (25% in 30 min)
Full Charge Time 1:35 h 2:30 h
Battery Life Test
Battery Life
Samsung Galaxy S21
17:54
Xiaomi Redmi 9T
31:10
Web Browsing06:01 h11:57 h
Video Playback11:06 h15:26 h
Games04:21 h06:05 h
Standby Mode95 h175 h

Main camera

Matrix 12 MP 48 MP
Photo resolution 4000x3000 pixels 8000x6000 pixels
Zoom Optical, 1.1x Digital
Flash Dual LED LED
Stabilization Optical Digital
8K Recording Up to 24FPS No
4K Recording Yes (Up to 60 fps) No
1080p Recording Yes (Up to 60 fps) Yes (Up to 30 fps)
Slow Motion 960 fps (720p) 120 fps (720p)
Wide-angle lens 120 ° 120 °
Lenses count Standard: 12 MP
Telephoto: 64 MP
Ultra-wide: 12 MP		 Standard: 48 MP
Ultra-wide: 8 MP
Macro: 2 MP
Depth: 2 MP
Features - Bokeh effect
- Pro mode
- RAW support		 - Bokeh effect
- Pro mode
Main lens
Matrix12 MP48 MP
Aperturef/1.8f/1.8
Focal length26 mm26 mm
SensorSony IMX555Samsung S5KGM1
Sensor size1/1.761/2
Pixel size1.8 μm8 μm
AutofocusPhase autofocus (Dual Pixel)Phase autofocus
StabilizationOpticalDigital
Telephoto
Matrix64 MPn/a
Aperturef/2.0n/a
Focal length28 mmn/a
SensorSamsung Bright S5KGW2n/a
Sensor size1/1.72n/a
Pixel size0.8 μmn/a
StabilizationOpticaln/a
Ultra-wide lens
Matrix12 MP8 MP
Aperturef/2.2f/2.2
Focal length13 mm13 mm
SensorSony IMX563OmniVision OV8856
Sensor size1/2.551/4.0
Pixel size1.4 μm1.12 μm
StabilizationDigitalDigital
Main camera DxOMark results
Photo quality
Samsung Galaxy S21
129
Xiaomi Redmi 9T
n/a
Video quality
Samsung Galaxy S21
137
Xiaomi Redmi 9T
n/a
Overall camera score
Samsung Galaxy S21
133
Xiaomi Redmi 9T
n/a
Bokeh70n/a
Preview72n/a
Zoom126n/a
Sources: DxOMark [Samsung Galaxy S21]

Front camera

Matrix 10 MP 8 MP
Photo resolution 3872x2592 pixels 3264x2448 pixels
Aperture f/2.2 f/2.0
Focal length 26 mm 27 mm
Sensor Sony IMX374 CMOS
Sensor size 1/3.24 1/4.0
Pixel size 1.22 μm n/a
Autofocus Phase autofocus (Dual Pixel) No
Stabilization Digital Digital
Video resolution 2160p (4K) at 60 fps 1080p (Full HD) at 30 fps
TOF 3D sensor No No

Connectivity

Wi-Fi version Wi-Fi 6 (802.11 a/b/g/n/ac/ax) Wi-Fi 5 (802.11 a/b/g/n/ac)
Wi-Fi features - Dual Band
- Wi-Fi MiMO
- Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display		 - Wi-Fi Direct
- Wi-Fi Hotspot
- Wi-Fi Display
Bluetooth version 5 5
Bluetooth features LE, A2DP LE, HID, A2DP
USB type USB Type-C USB Type-C
USB version 3.2 2
USB features - Charging
- USB Storage Mode
- USB-Host mode
- OTG		 - Charging
- USB Storage Mode
- OTG
GPS - GPS
- GLONASS
- Beidou
- Galileo		 - GPS
- GLONASS
- Beidou
- Galileo
NFC* Yes Varies by region
Infrared Port No Yes
Connectivity
SIM Count*22
SIM TypeNanoNano
SIM ModeDual SIM StandbyDual SIM Standby
eSIM Support *YesNo
Hybrid SlotNoNo
2G BandsGSM 850, 900, 1800, 1900 MHzGSM B2/3/5/8
3G BandsWCDMA Band 1, 2, 4, 5, 8WCDMA B1/2/4/5/8
LTE Bands*LTE (B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28/B32/B38/B39/B40/B41/B66)LTE (B1/B2/B3/B4/B5/B7/B8/B20/B28/B38/B40/B41)
LTE category2413
5G SupportYesNo

Sound

Speakers Stereo Stereo
3.5 mm Jack No Yes
FM Radio No Yes
Dolby Atmos Yes No
Speaker Test
Max Volume
Samsung Galaxy S21
87 dB
Xiaomi Redmi 9T
84.6 dB

Other

Class Flagship Budget
Announced January, 2021 yr January, 2021 yr
Release Date February, 2021 yr January, 2021 yr
Launch Price ($) 800 180
Sensors - Hall Sensor
- Barometer
- Proximity Sensor
- Gyroscope
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor		 - Proximity Sensor
- Accelerometer
- Ambient Light Sensor
- Compass
- Fingerprint sensor
* Attention! Config, frequencies, NFC, and other specs may vary by region.

Results

After analyzing the data, we consider Samsung Galaxy S21 the clear winner in this comparison.

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